Converter versus Converter
|
|
- Gervase Golden
- 5 years ago
- Views:
Transcription
1 Converter versus Converter I've acquired two inexpensive 1.4x teleconverters: the "generic" Tamron-F 1.4x MC4 (identical to the Teleplus and cheap-o Kenko), and the decidedly more up-market Sigma EX 1.4x APO. I finally got around to doing a shootout between the two. Given Sigma's solid reputation for optics, I was expecting the Sigma EX to win in a walk... but it turns out it wasn't as simple as that. Build and design The Tamron and the Sigma side-by-side. Note the protruding front element on the Sigma: this means it can't be used with many lenses, as it'd get in the way. If you want one, be sure to check for compatibility. 1
2 There aren't that many things you can put on a TC, but somehow the Tamron and the Sigma manage to be different anyway. The Tamron is clearly built for economy: it has a metal body and metal mounts both ways, and the element coatings look pretty good to the eye, but paint and finish are pretty minimal. The TC is wired through: it reports the aperture setting on the attached lens, without accounting for the light loss. The Sigma looks and feels much nicer: it's heavier, has the pretty classy EX textured-gray finish, the printing is neat, and it reports the aperture correctly. Both come with a baggie to carry them in, and caps for both ends. The build definitely prejudiced me towards the Sigma... but they do say you shouldn't judge a book by its cover.note also that the Sigma, like the Canon 1.4x, has a protruding front element that means that it can't be used with many lenses with rear elements close to the back. Test set-up I shot a scene with plenty of detail with my Canon 200/2.8L and each teleconverter at f/4, f/5.6, and f/8. Then I shot the same scene without the teleconverter, and, just for kicks, with both teleconverters stacked. Then, I compared the teleconverter shots to each other and to the bare 200 mm shot up-rezzed by 1.4x. Finally, I downsampled the teleconverter shots by 0.71, and compared that to the non-teleconverter shot, sharpened somewhat to normalize contrast. I'm omitting discussion of the f/5.6 shots, as they don't really show anything that's not in the f/8 ones. Performance at f/4 Edge crops Tamron 2
3 Sigma 3
4 No TC, up-rezzed 4
5 Center crops Tamron 5
6 Sigma 6
7 No TC, up-rezzed 7
8 A couple of things strike the eye immediately: while it's clear that both teleconverters do gain resolution, they also introduce some rather unpleasant artifacts. Both do nasty things to the bokeh: they introduce color fringes, and the Tamron also smears it out circularly. The Tamron is visibly softer at the edges, although both are pretty good in the center. On the other hand, the Sigma introduces some rather nasty red-green shift, very similar to the Tokina 17. Neither loses much contrast. Color-wise, the Sigma is slightly warm, the Tamron possibly slightly cool. ("Possibly," because the light was changing as I made the shots, so I can't be 100% certain it's not because of this.) The Tamron is sharper in the center, but the Sigma is more even across the frame. I was particularly struck at how good the up-rezzed 200 mm shot looks. Very few optical artifacts visible, and still looking pretty sharp. The tell-tale is in the arcing structures: they've started to develop the beginnings of jaggies. But in any case, there's clearly a lot of room to crop and up-rez even without a teleconverter. I'll hand this round to the Sigma: despite the red-green shift, it maintains bokeh better than the Tamron, and does gain a significant amount of resolution against the up-rezzed shot. The up-rezzed 200 is very close, though: not quite as sharp, but with none of the annoying teleconverter artifacts, and it has one more very good stop of brightness in it. In less than bright daylight, I'd definitely consider shooting without the TC and up-rezzing afterwards. For birding, I'd pick the Tamron, though, as edge softness doesn't matter much for that mission. 8
9 Performance at f/8 Edge crops Tamron Sigma 9
10 No TC, up-rezzed 10
11 Center crops Tamron 11
12 Sigma 12
13 No TC, up-rezzed 13
14 On to round 2. Here, the roles are reversed. Both teleconverters perform pretty well: the smeared bokeh and edge softening are largely gone. (In fact, they were largely gone by f/ there's really very little difference between that and f/8.) There is an obvious gain in resolution over the up-rezzed frame. However, Sigma's red-green shift is still there, and actually more obvious because of the overall better sharpness, whereas the Tamron's halation-softness is gone, and the smeared bokeh isn't smeared anymore either. So this round goes squarely to the Tamron. "Don't be an idiot" Stacked, at f/11. 14
15 Finally, from the "Don't be an idiot, that couldn't possibly work" department: I stacked the two TC's to get an effective 400/5.6. Guess what? It worked! Not spectacularly well, but it does produce usable quality. I'm sure a dedicated 2x teleconverter would do a much better job. I plan to own one, one of these days. Conclusion: I'm keeping the Tamron I have to say I expected better from Sigma's EX: while it maintains bokeh better and is more even across the frame, the red-green shift it introduces is a definite minus, and the yellowish color cast isn't very nice either. The Tamron is sharper in the center even wide-open, and its nasties go away almost completely just one stop down. As it's probably the cheapest 1.4x available, it's definitely excellent value for money. The Sigma is better wide open, but the Tamron is better for birding and capable of better quality stopped-down. In practice, this means that I'll stop down to f/5.6 whenever possible, and if not possible, I'll still get a decently sharp center... or just leave off the TC and crop afterwards. Neither teleconverter is bad, though. Both gain a good deal of resolution, especially stopped-down, lose very little contrast, and aberrations are largely kept under control. I have a feeling that to get much better than this, I'd have to shell out for the much more expensive Canon... or, of course, get a 300/4. Neither makes much sense for my needs, so the Tamron's staying. Anyone want to buy a good-as-new Sigma 1.4? 15
16 Unless otherwise indicated, all materials on this site are by Petteri Sulonen. They are licensed under the Creative Commons Attribution License [ I would appreciate it if you dropped me a line if you want to reproduce them. Any trademarks are property of their respective owners; their use is purely editorial and does not constitute an infringement. 16
Levels. What is a levels histogram? "Good" and "bad" histograms. Levels
Levels One of the most powerful tools available in post-processing photos is the Levels editor. It displays the picture's levels histogram and allows you to manipulate it with a few simple but effective
More informationBlown Highlights: "How Much Is Acceptable?"
Blown Highlights: "How Much Is Acceptable?" Some old curmudgeon of a photographer once said that any scene that has more contrast than slide film can handle isn't worth photographing anyway. I think he
More informationGeometry in composition
Geometry in composition In the previous Lessons, we've gone over some general principles about making photographs. The first lesson, the Rule of Thirds, introduced a widely usable principle that helps
More informationDefocus Control on the Nikon 105mm f/2d AF DC-
Seite 1 von 7 In the last number of days I have been getting very many hits to this page. I have (yet) no bandwidth restrictions on this site, but please do not click on larger images than you need to
More informationNikon AF-S Nikkor 50mm F1.4G Lens Review: 4. Test results (FX): Digital Photograph...
Seite 1 von 5 4. Test results (FX) Studio Tests - FX format NOTE the line marked 'Nyquist Frequency' indicates the maximum theoretical resolution of the camera body used for testing. Whenever the measured
More informationDARRAN s # 3 KISS (Keep It Simple Shooter) January 2018
DARRAN s # 3 KISS (Keep It Simple Shooter) January 2018 PHOTO CONVERSATIONS... Best Lenses Following on from the last conversation... Lenses are a critical point of your photography. Again, brand is irrelevant.
More informationThe Faithful Fifty. The Queen of Optics. The Faithful 50
The Faithful Fifty Oh, the fifty. The honest speaker, and the most cunning liar. The boring normal that takes a lifetime to master. The lens that suggests, whispers, and beguiles, rather than shouts, insists,
More informationSource: (January 4, 2010)
Source: http://www.slrgear.com/reviews/showproduct.php/product/101/cat/12 (January 4, 2010) Name Nikon 105mm ƒ/2d AF DC Nikkor Image Circle 35mm Type Telephoto Prime Defocus Control Focal Length 105mm
More informationAperture Explained. helping you to better understand your digital SLR camera SLR PHOTOGRAPHY GUIDE
Aperture Explained helping you to better understand your digital SLR camera SLR PHOTOGRAPHY GUIDE WELCOME 1 helping you to better understand your digital SLR camera. This 4 part series will cover Aperture,
More informationNikon f/ g Evaluation
Nikon 80-400 f/4.5-5.6g Evaluation Killdeer - D7100 in 1.3x DX crop mode handheld, 80-200 f/4.5-5.6g @ 400mm Construction: The 80-400 f/4.5-5.6g is a relatively large and bulky lens for the genre but overall,
More informationEasily Smooth And Soften Skin In A Photo With Photoshop
Easily Smooth And Soften Skin In A Photo With Photoshop Written by Steve Patterson OPEN THE START FILE BY RIGHT CLICKING THE.JPG FILE AND CHOOSING OPEN WITH ADOBE PHOTOSHOP. SAVE AS: X_lastname_firstname_Smooth_Soft
More informationTwinkles: Sigma 14/2.8 EX
Twinkles: Sigma 14/2.8 EX In my continuing quest for the perfect wide-angle, I've settled on a new contender. I replaced Popeye with Twinkles -- the Sigma 12-24/4.5-5.6 EX had to make way for another Sigma,
More informationCAPTURE FALL COLOR! SAVE $200 + FREE GIFT mm F4-5.6 DG APO. for Nikon Mount (#5A8306) SAVE $180. Was $669 NOW $369 SAVE
SHOP TIL 10/31 CAPTURE FALL COLOR! 100-400mm F5-6.3 DG C (#729) & 67mm WR UV Filter (#AFE9B0) Was $799 NOW $699 120-300mm F2.8 DG Sports (#137) & 2x TC- 2001 Teleconverter (#870) Was $3,599 NOW $3,399
More informationNikon 200mm f/4d ED-IF AF Micro Nikkor (Tested)
Nikon 200mm f/4d ED-IF AF Micro Nikkor (Tested) Nikon 200mm f/4d ED-IF AF Micro Nikkor Image Circle 35mm Type Telephoto Prime Macro Focal Length 200mm APS Equivalent 300mm Max Aperture f/4 Min Aperture
More informationPanoramas. Featuring ROD PLANCK. Rod Planck DECEMBER 29, 2017 ADVANCED
DECEMBER 29, 2017 ADVANCED Panoramas Featuring ROD PLANCK Rod Planck D700, PC-E Micro NIKKOR 85mm f/2.8d, 1/8 second, f/16, ISO 200, manual exposure, Matrix metering. When we asked the noted outdoor and
More informationAs can be seen in the example pictures below showing over exposure (too much light) to under exposure (too little light):
Hopefully after we are done with this you will resist any temptations you may have to use the automatic settings provided by your camera. Once you understand exposure, especially f-stops and shutter speeds,
More informationEileen Donelan. What s in my Camera Bag? Minimum Camera Macro Lens Cable Release Tripod
Close Up Photography Creating Artistic Floral Images Eileen Donelan Equipment Choices for Close Up Work What s in my Camera Bag? Minimum Camera Macro Lens Cable Release Tripod Additional Light Reflector
More informationNikon AF-Nikkor 50mm F1.4D Lens Review: 5. Test results (FX): Digital Photography...
Seite 1 von 5 5. Test results (FX) Studio Tests - FX format NOTE the line marked 'Nyquist Frequency' indicates the maximum theoretical resolution of the camera body used for testing. Whenever the measured
More informationPentax Da 50mm f/1.8. Canon EF 50mm f/1.8 ii. key spec. key spec. 80 / LOWeST PRICe / CANON.CO.uk 116/ ShARP AT f/1.8 / PeNTAx.CO.
Canon EF 50mm f/1.8 ii Pentax Da 50mm f/1.8 80 / LOWeST PRICe / CANON.CO.uk 116/ ShARP AT f/1.8 / PeNTAx.CO.uk anon s budget 50mm is the least c expensive f/1.8 lens on the market, and has earned something
More informationNikon 24mm f/2.8d AF Nikkor (Tested)
Nikon 24mm f/2.8d AF Nikkor (Tested) Name Nikon 24mm ƒ/2.8d AF Nikkor Image Circle 35mm Type Wide Prime Focal Length 24mm APS Equivalent 36mm Max Aperture ƒ/2.8 Min Aperture ƒ/22 Diaphragm Blades 7 Lens
More informationNikon AF-S mm f/4e TC1.4 FL ED VR Lens Review. by E.J. Peiker
Nikon AF-S 180-400mm f/4e TC1.4 FL ED VR Lens Review by E.J. Peiker About 5 years ago, in May 2013, Canon introduced a completely new kind of lens that took the market by storm. It was a 200-400mm f/4
More informationComposing Photographs
JANUARY 18, 2018 BEGINNER Composing Photographs Creatively photographing a salt marsh Featuring DIANE BERKENFELD In addition to zooming in on the details of the salt marsh, remember to take wide shots
More informationTopic 6 - Lens Filters: A Detailed Look
Getting more from your Camera Topic 6 - Lens Filters: A Detailed Look Learning Outcomes In this lesson, we will take a detailed look at lens filters and study the effects of a variety of types of filter
More informationShoot Headshots that Pop!
Shoot Headshots that Pop! It s all about personality Learn how to shoot headshots that make the casting director look twice. by Martin Bentsen Executive Director at MJB Home Entertainment Copyright 2012
More informationAdd Rays Of Sunlight To A Photo With Photoshop
Add Rays Of Sunlight To A Photo With Photoshop Written by Steve Patterson. In this photo effects tutorial, we'll learn how to easily add rays of sunlight to an image, a great way to make an already beautiful
More informationThe Layer Blend Modes drop-down box in the top left corner of the Layers palette.
Photoshop s Five Essential Blend Modes For Photo Editing When it comes to learning Photoshop, believe it or not, there's really only a handful of things you absolutely, positively need to know. Sure, Photoshop
More informationDIGITAL INFRARED PHOTOGRAPHY By Steve Zimic
DIGITAL INFRARED PHOTOGRAPHY By Steve Zimic If you're looking to break outside the box so to speak, infrared imaging may be just the ticket. It does take a bit of practice to learn what types of scenes
More information9/19/16. A Closer Look. Danae Wolfe. What We ll Cover. Basics of photography & your camera. Technical. Macro & close-up techniques.
A Closer Look Danae Wolfe What We ll Cover Basics of photography & your camera Technical Macro & close-up techniques Creative 1 What is Photography? Photography: the art, science, & practice of creating
More informationSource:
Nikon 70-200mm f/2.8g AF-S ED VR II Nikkor (Tested) Reviews Views Date of last review 3 55279 1/12/2010 Recommended By Average Purchase 100% of reviewers $2,115.00 User Review Rating Averages Construction
More informationBLACK CAT PHOTOGRAPHIC RULES-OF- THUMB
Page 1 of 5 BLACK CAT PHOTOGRAPHIC RULES-OF- THUMB These 50+ photo-cyber-tips are meant to be shared and passed along. Rules-of-thumb are a kind of tool. They help identify a problem or situation. They
More informationCamera, Lens And Other Must-Have Gear
Camera, Lens And Other Must-Have Gear Point-and-Shoot Camera: For vacations, parties, family events Small and inexpensive Limitations: fixed lens, not for low light usage Bridge Camera: Niche: Point-and-Shot
More informationHello, and welcome to The Global Innovation. Outlook Podcast Series, where IBM demonstrates the
Transcript Title: Playing Games at Work Date: June 2007 Podcast Length: 9:06 Summary: Byron Reeves, a professor at Stanford University's Department of Communications, the faculty director of the Stanford
More informationMITOCW watch?v=fp7usgx_cvm
MITOCW watch?v=fp7usgx_cvm Let's get started. So today, we're going to look at one of my favorite puzzles. I'll say right at the beginning, that the coding associated with the puzzle is fairly straightforward.
More informationAtik Infinity; StarlightXpress Ultrastar; and Mallincam StarVision.
ICX825 Based Astro-Video Camera Comparison by Jim Thompson, P.Eng Test Report Oct. 7 th, 2016 Objectives: The choices of camera available for use in video astronomy has grown rapidly over the past couple
More informationWant Better Landscape Photos? First Check Your Definition of "Landscape"
JUNE 14, 2018 BEGINNER Want Better Landscape Photos? First Check Your Definition of "Landscape" Featuring TONY SWEET Tony Sweet Flatey Island, Iceland. "The further north, the longer the good light lasts,"
More informationCrystal Vodka: the Canon 135/2.8 SF
Crystal Vodka: the Canon 135/2.8 SF I do most of my shooting between 35 and 50 mm, with an occasional foray into wide-angle and an even more occasional foray into telephoto. For about a year and a half,
More informationDigital Photography Level 3 Camera Exposure Settings
The basics of Photography Digital Photography Level 3 Camera Exposure Settings We are now going into photographic shoot modes that are common to most cameras. Some cameras may have more modes and some
More informationHome Search Gallery How-To Books Links Workshops About Contact The Zone System 2006 KenRockwell.com INTRODUCTION Zones are levels of light and dark. A Zone System is a system by which you understand and
More informationBest Camera Manual Lens For Nikon D3100 Portrait
Best Camera Manual Lens For Nikon D3100 Portrait This is a must have lens for both crop and full frame camera bodies. Also good for wedding and newborn detail shots. I was wondering if you could help with
More informationThe D70 only controls one external group of flashes. You can use many external flashes, but they will fire at the same power.
Multiple Flash Channels The D70 only controls one external group of flashes. You can use many external flashes, but they will fire at the same power. To control more than one set of external flashes you
More informationDavid Busch's Canon Powershot G12 Guide To Digital Photography (David Busch's Digital Photography Guides) Free Ebooks PDF
David Busch's Canon Powershot G12 Guide To Digital Photography (David Busch's Digital Photography Guides) Free Ebooks PDF The Canon PowerShot G12 is the most advanced pocket-sized digital camera Canon
More informationThe Zeiss Otus 55mm APO and Focus-Stacking. By Michael Erlewine
The Zeiss Otus 55mm APO and Focus-Stacking By Michael Erlewine (Michael@Erlewine.net) I received my copy of the Zeiss Otus 55mm APO lens today. Having fallen in love with its younger brother the Zeiss
More informationToday what I'm going to demo is your wire project, and it's called wired. You will find more details on this project on your written handout.
Fine Arts 103: Demo LOLANDA PALMER: Hi, everyone. Welcome to Visual Concepts 103 online class. Today what I'm going to demo is your wire project, and it's called wired. You will find more details on this
More informationSaturday, December 1, 2012
Saturday, December 1, 2012 How to Photograph Your Paintings -By Dan dos Santos I've been asked this question a lot here on Muddy Colors, and I guess it's about time I finally got around to it. One of the
More informationWhat is Dual Boxing? Why Should I Dual Box? Table of Contents
Table of Contents What is Dual Boxing?...1 Why Should I Dual Box?...1 What Do I Need To Dual Box?...2 Windowed Mode...3 Optimal Setups for Dual Boxing...5 This is the best configuration for dual or multi-boxing....5
More informationThe Zeiss Otus 55mm APO Lens and Focus-Stacking December 24, 2013 By Michael Erlewine
The Zeiss Otus 55mm APO Lens and Focus-Stacking December 24, 2013 By Michael Erlewine (Michael@Erlewine.net) This for my camera/lens friends on Facebook. Probably will interest few others. I received my
More informationHow to Help People with Different Personality Types Get Along
Podcast Episode 275 Unedited Transcript Listen here How to Help People with Different Personality Types Get Along Hi and welcome to In the Loop with Andy Andrews. I'm your host, as always, David Loy. With
More informationStitching Panoramas using the GIMP
Stitching Panoramas using the GIMP Reference: http://mailman.linuxchix.org/pipermail/courses/2005-april/001854.html Put your camera in scene mode and place it on a tripod. Shoot a series of photographs,
More informationMITOCW R22. Dynamic Programming: Dance Dance Revolution
MITOCW R22. Dynamic Programming: Dance Dance Revolution The following content is provided under a Creative Commons license. Your support will help MIT OpenCourseWare continue to offer high quality educational
More information3 SPEAKER: Maybe just your thoughts on finally. 5 TOMMY ARMOUR III: It's both, you look forward. 6 to it and don't look forward to it.
1 1 FEBRUARY 10, 2010 2 INTERVIEW WITH TOMMY ARMOUR, III. 3 SPEAKER: Maybe just your thoughts on finally 4 playing on the Champions Tour. 5 TOMMY ARMOUR III: It's both, you look forward 6 to it and don't
More informationSetting Up Your Canon 5d Mark Ii For Wedding Photography
Setting Up Your Canon 5d Mark Ii For Wedding Photography However, if you spent any time shooting the Canon 5d Mark II you will feel However, for us as wedding photographers we can keep up with the action
More informationMITOCW MITCMS_608S14_ses03_2
MITOCW MITCMS_608S14_ses03_2 The following content is provided under a Creative Commons license. Your support will help MIT OpenCourseWare continue to offer high quality educational resources for free.
More informationGreatProjectsGreatLife.com Unleash the Power of the Law of Attraction 1
GreatProjectsGreatLife.com Unleash the Power of the Law of Attraction 1 Overview We all have dreams, goals and ambitions. We all have things we want to accomplish and we all have somewhere we want to be
More informationWhy Prime NIKKORs Are Now My Prime Traveling Companions
JANUARY 3, 2018 BEGINNER Why Prime NIKKORs Are Now My Prime Traveling Companions Featuring TOM BOL Tom Bol I took this in late morning in Las Torres Del Paine National Park in Chile. Patagonia is known
More informationeven describe how I feel about it.
This is episode two of the Better Than Success Podcast, where I'm going to teach you how to teach yourself the art of success, and I'm your host, Nikki Purvy. This is episode two, indeed, of the Better
More informationThe Emperor's New Repository
The Emperor's New Repository I don't know the first thing about building digital repositories. Maybe that's a strange thing to say, given that I work in a repository development group now, and worked on
More informationI use the DarkSky Map to find many of the areas we visit as well as consult other photographers.!
NORTH TEXAS NIGHT PHOTOGRAPHY Background: Welcome to the NTNP Group. I m glad you have decided to join us on a meet-up. I started this group because I love photography. More specifically, I love night
More informationPhotoshop Master Class Tutorials for PC and Mac
Photoshop Master Class Tutorials for PC and Mac We often see the word Master Class used in relation to Photoshop tutorials, but what does it really mean. The dictionary states that it is a class taught
More informationBest Camera Manual Lens For Nikon D3100 Beginner
Best Camera Manual Lens For Nikon D3100 Beginner The flash can be used on the camera hot shoe, either as direct flash or as This bounce reflection becomes a large soft light, from a better direction (not
More informationTake Better Portraits
SEPTEMBER 4, 2018 BEGINNER Take Better Portraits Learn the elements of a good portrait photograph Featuring GARY SMALL It can't be that difficult, right? Your friend/spouse/child asks you to take his/her
More informationQHY5III290MM Review. 1 - Read noise tests. 2 - Anti Amp-glow tests. 3 - Sky surveilance tests. 4 - Test behind the scope
QHY5III290MM Review This is a review after 6 months of use, overall i'm very pleased. This camera allows number of things that would be impossible to acheive with anything else, and i hope improvements
More informationPARTICIPATORY ACCUSATION
PARTICIPATORY ACCUSATION A. Introduction B. Ask Subject to Describe in Detail How He/She Handles Transactions, i.e., Check, Cash, Credit Card, or Other Incident to Lock in Details OR Slide into Continue
More informationCREATE A SPECTACULAR GRASS TEXT EFFECT IN PHOTOSHOP
CREATE A SPECTACULAR GRASS TEXT EFFECT IN PHOTOSHOP Tutorial from http://psd.tutsplus.com/ Compiled by INTRODUCTION Ever wanted to make text out of grass? Well with Photoshop you can. In this
More informationTidewater Camera Club Competition Score Sheet
Tidewater Camera Club Competition Score Sheet Month/Year: January 2016 Theme: CloseUp Nature Photography From 1-5 points for each score Title Comp Impact Tech Total Judges Comments A_Drop 3 4 4 11 Nice
More informationNikon 180mm f/2.8d ED-IF AF Nikkor (Tested)
Nikon 180mm f/2.8d ED-IF AF Nikkor (Tested) Name Nikon 180mm f/2.8d ED-IF AF Nikkor Image Circle 35mm Type Telephoto Prime Focal Length 180mm APS Equivalent 270mm Max Aperture f/2.8 Min Aperture f/22 Diaphragm
More informationBuying and Holding Houses: Creating Long Term Wealth
Buying and Holding Houses: Creating Long Term Wealth The topic: buying and holding a house for monthly rental income and how to structure the deal. Here's how you buy a house and you rent it out and you
More informationPlaying With Light Lesson One: How to "See" Light
Playing With Light Lesson One: How to "See" Light Table of Contents Introduction... 1 Quality of Light... 2 Hard Light... 3 Soft Light... 4 Hard / Soft Blends... 5 Learning to See the Quality of Light...
More informationFailure is a crucial part of the creative process. Authentic success arrives only after we have mastered failing better. George Bernard Shaw
PHOTOGRAPHY 101 All photographers have their own vision, their own artistic sense of the world. Unless you re trying to satisfy a client in a work for hire situation, the pictures you make should please
More informationSigma Imaging (UK) Ltd is pleased to announce that the SRP of the new mm F2.8 DG OS HSM
January 2013 S Sports SIGMA 120-300mm F2.8 DG OS HSM Sigma Imaging (UK) Ltd is pleased to announce that the SRP of the new 120-300mm F2.8 DG OS HSM lens is 3,599.99. Sigma and Canon fit will be available
More informationMITOCW watch?v=-qcpo_dwjk4
MITOCW watch?v=-qcpo_dwjk4 The following content is provided under a Creative Commons license. Your support will help MIT OpenCourseWare continue to offer high quality educational resources for free. To
More informationA Technical View of Bokeh
A Technical View of Bokeh by Harold M. Merklinger as published in Photo Techniques, May/June 1997. TRIANGLE DOWN (UP in final Image) TRIANGLE UP (DOWN in final Image) LENS POINT SOURCE OF LIGHT PLANE OF
More informationMITOCW R3. Document Distance, Insertion and Merge Sort
MITOCW R3. Document Distance, Insertion and Merge Sort The following content is provided under a Creative Commons license. Your support will help MIT OpenCourseWare continue to offer high-quality educational
More informationBest Canon Lens For Hd Video 7d Low Light >>>CLICK HERE<<<
Best Canon Lens For Hd Video 7d Low Light Canon 1D C with SLR Magic 50mm T2.1 PL lens converted to EF Defining attributes: Low light performance is incredible and via HDMI the 4K It also appears to lack
More informationBest Camera Manual Lens For Nikon D90 Weddings
Best Camera Manual Lens For Nikon D90 Weddings HELP I just purchased the Nikon D7100 to replace my Nikon D300. Now a PRO photographer says be used to shoot weddings. Should I return the camera? So, this
More informationPeter, For What It s Worth
2005-09-27 Peter, For What It s Worth You might be surprised to find that I recommend you should consider getting a Canon EOS 350D instead of a 20D - you will have more money to spend on lenses. The 20D
More informationTranscript of the podcasted interview: How to negotiate with your boss by W.P. Carey School of Business
Transcript of the podcasted interview: How to negotiate with your boss by W.P. Carey School of Business Knowledge: One of the most difficult tasks for a worker is negotiating with a boss. Whether it's
More informationSHA532 Transcripts. Transcript: Forecasting Accuracy. Transcript: Meet The Booking Curve
SHA532 Transcripts Transcript: Forecasting Accuracy Forecasting is probably the most important thing that goes into a revenue management system in particular, an accurate forecast. Just think what happens
More informationThe Scrappy Little Truglo Tru-Tec (The Best Red Dot Sight Under 200 Bucks)
The Scrappy Little Truglo Tru-Tec (The Best Red Dot Sight Under 200 Bucks) Watch this video to find out why... Don't Wait! Order Your Truglo Tru-Tec from Amazon today by clicking the button below: Not
More informationMacro and Close-up Photography
Photo by Daniel Schwen Macro and Close-up Photography Digital Photography DeCal 2010 Nathan Yan Kellen Freeman Some slides adapted from Zexi Eric Yan What Is Macro Photography? Macro commonly refers to
More informationGlock 34 Gen 4 Review (Top 5 Reasons It's One Of The Best Long Slide Pistols Out There)
Glock 34 Gen 4 Review (Top 5 Reasons It's One Of The Best Long Slide Pistols Out There) First, Check Out This Video: If you're in the market for an amazing full-size handgun, you need to be looking at
More informationMultimedia and Arts Integration in ELA
Multimedia and Arts Integration in ELA TEACHER: There are two questions. I put the poem that we looked at on Thursday over here on the side just so you can see the actual text again as you're answering
More informationModule 1: From Chaos to Clarity: Traders Let s Get Ready for 2015!
Module 1: From Chaos to Clarity: Traders Let s Get Ready for 2015! Hi, this is Kim Krompass and this is Module 1: From Chaos to Clarity: Trader's Let's Get Ready for 2015! In this module, I want to do
More informationTABLETOP WORKSHOP. Janet Steyer
QUALITIES OF LIGHT There are 6 qualities of light. TABLETOP WORKSHOP Janet Steyer 03-19-05 The first 3 QUALITIES OF LIGHT can be measured. They can also be manipulated after a photograph is taken. You
More informationAwesome Art. Creating a Winning Game Industry Art Portfolio. 1 of 6 1/8/13 12:18 PM. By Brent Fox
1 of 6 1/8/13 12:18 PM Creating a Winning Game Industry Art Portfolio By Brent Fox [Art that shows direct relevance to games is so much more important than showcasing specific skills or personal preference
More informationHow to Photograph Fireworks
How to Photograph Fireworks Whether you're celebrating Independence Day, Guy Fawkes Day, or Diwali, it's always tempting to take pictures of the fireworks exploding in air. After all, a good firework show
More informationA brief extract from The Photolearn Model Portfolio tutorial
A brief extract from The Photolearn Model Portfolio tutorial Our approach to this Tutorial Every kind of photography - and especially studio photography - seems to attract people who have an almost unlimited
More informationWelcome to our first of webinars that we will. be hosting this Fall semester of Our first one
0 Cost of Attendance Welcome to our first of --- webinars that we will be hosting this Fall semester of. Our first one is called Cost of Attendance. And it will be a 0- minute webinar because I am keeping
More informationOG TRAINING - Recording 2: Talk to 12 using the Coffee Sales Script.
OG TRAINING - Recording 2: Talk to 12 using the Coffee Sales Script. Welcome to The second recording in this series which is your first training session and your first project in your new gourmet coffee
More informationCanon 5d Mark Iii Rumors Manual Focusing. Screen Replacement >>>CLICK HERE<<<
Canon 5d Mark Iii Rumors Manual Focusing Screen Replacement Review Canon Focusing Screens, LCD & Viewfinder Accessories. 5 stars because I see no reason why the price of 5D MK II accessories should be
More informationHow to Photograph Fireworks
http://www.kenrockwell.com/tech/fireworks.htm Home Donate New Search Gallery Reviews How-To Books Links Workshops About Contact How to Photograph Fireworks 2008-2012 KenRockwell.com. All rights reserved.
More informationOBERLO: A FANTASTIC APP THAT LL TURN YOUR SHOP INTO A SUPER PROFIT MAKING MACHINE BY CONNECTING IT TO ALIEXPRESS!
OBERLO: A FANTASTIC APP THAT LL TURN YOUR SHOP INTO A SUPER PROFIT MAKING MACHINE BY CONNECTING IT TO ALIEXPRESS! Welcome back to my series for the videos Sells Like Hotcakes on how to create your most
More informationNikon D750 ISO 200 1/60 sec. f/ mm lens
Nikon D750 ISO 200 1/60 sec. f/16 20 35mm lens 10 Creative Focus Sometimes tack-sharp focus isn t what you want for an image or for an entire image to tell the story you envision. What you focus on and
More informationBlock Sanding Primer Dos and Don ts Transcript
Block Sanding Primer Dos and Don ts Transcript Hey, this is Donnie Smith. And welcome to this lesson on block sanding primer. In this lesson, we're going to give you some of the do's and some of the don
More informationInvestor Defense Destroying Call Script
Investor Defense Destroying Call Script Hey, Eric Medemar here. I'm the rather homely one in the center. After getting hundreds of questions asking What do I say to investors, I put this little guide together
More informationThe Open University xto5w_59duu
The Open University xto5w_59duu [MUSIC PLAYING] Hello, and welcome back. OK. In this session we're talking about student consultation. You're all students, and we want to hear what you think. So we have
More informationMITOCW R9. Rolling Hashes, Amortized Analysis
MITOCW R9. Rolling Hashes, Amortized Analysis The following content is provided under a Creative Commons license. Your support will help MIT OpenCourseWare continue to offer high quality educational resources
More informationBest Camera Manual Lens For Canon Eos 7d Video
Best Camera Manual Lens For Canon Eos 7d Video Canon EOS 7D DSLR Camera with 28-135mm Kit CD-ROM, Instruction Manual, 1-Year Canon U.S.A. Warranty While the quality is not as good as a Mark II or 4x5,
More informationCanon 5d Mark Iii Rumors Manual Focus. Confirmation Light >>>CLICK HERE<<<
Canon 5d Mark Iii Rumors Manual Focus Confirmation Light Officially, it is not supported by Canon to change the screen for the 5D III (only for here: Focusing Screen with installation instructions here:
More informationNFL Strength Coach of the Year talks Combine, Training, Advice for Young Strength Coaches
NFL Strength Coach of the Year talks Combine, Training, Advice for Young Strength Coaches Darren Krein joins Lee Burton to discuss his recent accolades, changes in the NFL Combine, his training philosophies
More informationZoë Westhof: Hi, Michael. Do you mind introducing yourself?
Michael_Nobbs_interview Zoë Westhof, Michael Nobbs Zoë Westhof: Hi, Michael. Do you mind introducing yourself? Michael Nobbs: Hello. I'm Michael Nobbs, and I'm an artist who lives in Wales. Zoë Westhof:
More information