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16
Nailed both aperture and ISO on my first guess... f/4 and 12,800.

Of course, there's just my word for that fact, but I felt pretty good so I posted this worthless post anyway. Fun challenge!

17
EOS Bodies - For Stills / Re: What is 20,000 shutter clicks worth?
« on: August 13, 2013, 12:03:09 AM »
20,000 shutter clicks is absolutely nothing, completely ignorable. For what I do in sports, it's easy to shoot 5,000 in a day. I've shot as many as 12,000 in a day. The back up to my back up to my back up Canon 7D already has 36,000 photos on it and I consider it to be brand new. In fact, I've only had one camera shutter fail so far, and that was a Nikon D7000 after 136,000 actuations (it was completely replaced for free under warranty).

Pro bodies like this one have never had a shutter failure for me, but I'm probably lucky because they have hundreds of thousands of shots, and they definitely DO fail (more often for people who don't have backups, it seems to me, however!).

But just 20K is completely irrelevant. Don't return it. Just enjoy it.

As far as lying, the other posters do have a valid point there. A lie is a lie, and maybe you can't trust the seller to be clear about other details. But it is possible that those extra exposures were actually put on the camera AFTER the sale began. For example, he used it for a wedding while the auction was going on... 3,000 actuations... for track and field in Moscow.... 25,000 more actuations, etc.

But if there is anything wrong with the camera worth returning it, it has to be something else, not the actuations.

18
Canon General / Re: Failure rates
« on: August 08, 2013, 03:29:48 PM »
Watch out because I was burned by this same type of situation. I bought a 300mm Nikon lens grey market. Two years later, an internal element CAME LOOSE, the only time this has ever happened with any lens. The lens was perfect when I left my studio, but apparently while I was wheeling my lens case across the parking lot to a baseball game the element came loose. Maybe vibrations from similar situations over time caused this to happen.

Anyway, the only available repair locations Nikon permits are its two national service centers. I was told by phone that even if not under warranty, I could still pay full price and have it repaired.  So I insured the lens and shipped it to Nikon... bad decision.

After an 8-week debacle and hours of wasted time on the phone and email, I finally got the lens back from Nikon, completely unrepaired. They absolutely refused to do anything no matter what I paid, because it was imported from Japan by a 3rd party.

I have heard that sometimes Canon U.S.A. will repair gray market lenses as a courtesy only to some customers who pay full price. And I know for a fact that Canon's customer service is close to a 10 out of 10, while Nikon's is close to a 0 out of 10. So my horror story probably wouldn't have happened if I was working with Canon.

But in general, gray market lenses will NOT BE REPAIRED unless you ship back to Japan, and local repair centers may not be trustworthy.

The problem in my case was that I could not even ship back to Japan, because Japan required the ORIGINAL paperwork that B&H Photo Video had when they imported the lens from Japan, and of course B&H refused to provide me their wholesale bill of sale from Japan.


19
Lenses / Re: 200mm f/2.8 II vs. 70-200 f/2.8 IS II
« on: July 11, 2013, 05:03:10 PM »
It is definitely not possible to say that one of these lenses has an absolute advantage over the other one, but there are some really good things about the 200 mm prime. For the kind of photography that a few people do, that makes the prime incredibly wonderful. For most others, the zoom is more useful.         

As someone else pointed out, Roger Cicala has this to say:

Quote
Roger's Take
Roger Cicala
President of LensRentals.com
For years now, I think I’m the only person who likes this lens, and I can’t understand why. It’s sharper than the Canon 70-200mm f/2.8 IS II zoom and a third of the size and cost. It’s inconspicuous and great for spontaneous photography. People who start posing when they see a big white lens never look twice at a camera with this mounted. My personal favorite use is at events that won’t allow “professional” lenses in the stands— security won’t let me in with a big white lens but never look twice at the 200mm.
March, 2013

http://www.lensrentals.com/rent/canon/lenses/telephoto/canon-200mm-f2.8l-ii

Reasons for picking the 70-200 II are versatility and high performance over its whole focal length. It also has a huge advantage with image stabilization for stationary subjects.

Reasons for picking the 200 f/2.8 are

  • A slight, but definitely noticeable, improvement in light transmission due to significantly fewer elements--this is an advantage for moving subjects (perhaps the only situation where IS doesn't help)
  • There is a huge advantage in weight and handling for the 200mm prime. For a strong person like me the 70-200mm zoom can be negligible even for hours of shooting, but subconsciously my photography is dragging at the end of 12 hours of shooting. I probably never would have realized that until I found out how much more fresh and dynamic I felt using the 200mm prime instead, producing as a result better photos.

20
Yes, it is supposed to be as sharp. (Note that this compares Nikon vs. Canon versions, but results should be comparable because they're using the old D3s to evaluate the Nikon lens.)

http://www.photozone.de/nikon_ff/792-sigma3514dgfx?start=1
http://www.photozone.de/canon_eos_ff/510-canon_70200_2is28?start=1

At f/1.4 the Sigma ranges from 3K to 3.2K. And at f/2.0 the Sigma ranges from 3K to 3.7K. At f/2.8 the Sigma ranges from 3.2 to almost 3.9K (line widths per picture height).

At f/2.8 the Canon 70-200 ranges from 3.1K to 3.5K. The all around peak of the Sigma is 3,960 @f4.0 while for the Canon it is 3,721 at f/5.6 at 70mm.

Ummmm....no.  Ignore for the moment the fact that Klaus specifically states, "Please note that the tests results are not comparable across the different systems."  The Sigma 35/1.4 was not tested on 'the old D3s' (a 12 MP FX camera) but on the D3x, a 24 MP FX camera.  Those extra 3 MP directly translate to an increase in LW/PH compared to the 21 MP Canon 5DII, all else being equal. 

Compare the TDP ISO 12233 crops (where the Canon version of the Sigma lens was tested on the same camera as the Canon lens), is the Sigma as sharp?  Nope.

Your correction about the D3s vs. D3x is valuable. I meant to write D3x and I was thinking of that model, but out of habit without noticing my fingers typed D3s.

However, my respect went down (a little) for you, neuroanatomist, because you suggest ignoring Imatest results in favor of subjective pictures which, no matter how carefully made, cannot be used for valid comparison.

It makes no difference whether it was an ISO 12233 chart, whether was originally shot in RAW, whether it was made on concrete floor with a $25K setup, etc.

All those things may be true, and yet the sharpness selected on output has more to do with how sharp it looks to our eyes than even a 33% difference in lens sharpness. Also, I know for a fact that some of the cheaper lenses were not properly focused on the point shown in the cropped image area, by accident, I'm sure (I know that it is an immense time sacrifice, and I am not trying to criticize TDP in any way) while the more expensive lenses like the 200mm f/2.0 were properly focused. That alone makes a night and day difference when pixel peeping.

Additionally, some of the lenses shown by TDP have curvature of field which makes them look more blurry than they would if a focus point was actually used to focus at that point in the frame. This is just another reason why looking at a photo and allowing our imperfect senses to judge sharpness just doesn't work.

As a case in point, the Canon 85mm f/1.8 images show terrible softness in the images at TDP (they never look anywhere near as sharp as some of the other lenses do, even when stopped down to f/8!), but I know for a fact that they are not so bad.

Once again, I know that it is an immense time sacrifice to make those visualizations of lens quality, and I am not trying to criticize TDP in any way. But I am urging that proper scientific metrics should be used when discussing lens sharpness, not looking at a subjective picture and saying, "Nope."

We have to use logic first before allowing ourselves to make a decision based on a picture. Case in point: Some disreputable websites have for years used a sleight of hand trick to "prove" to people that RAW is sharper, by using "default" sharpening on JPEG output that is actually a lot weaker than the "default" sharpening used for RAW. Saying that RAW is sharper makes no more sense than saying that RAW has better white balance. Yes, RAW has more data in it to be used for any purpose, but both the sharpness and white balance are determined by processing after the fact. (You can never see RAW data. You can only see a visualization of RAW data.) So any comparison saying RAW is sharper than JPEG is by definition a comparison of two different levels of sharpening of RAW data and therefore make no logical sense other than to say that one amount of sharpening looks different from another. The same is true for comparing sharpness of lenses subjectively by looking at pictures on a website with our eyes. It just makes no sense.


21
Yes, it is supposed to be as sharp. (Note that this compares Nikon vs. Canon versions, but results should be comparable because they're using the old D3s to evaluate the Nikon lens.)

http://www.photozone.de/nikon_ff/792-sigma3514dgfx?start=1
http://www.photozone.de/canon_eos_ff/510-canon_70200_2is28?start=1

At f/1.4 the Sigma ranges from 3K to 3.2K. And at f/2.0 the Sigma ranges from 3K to 3.7K. At f/2.8 the Sigma ranges from 3.2 to almost 3.9K (line widths per picture height).

At f/2.8 the Canon 70-200 ranges from 3.1K to 3.5K. The all around peak of the Sigma is 3,960 @f4.0 while for the Canon it is 3,721 at f/5.6 at 70mm.

Remember that the resolution of the Sigma is not as dramatic as the zoom lens because the zoom lens makes everything look closer and therefore seem much sharper. Objects will look more blurry with the Sigma lens because they take up a smaller number of pixels unless you are 5.7 times closer. In other words, the resolution of the 70-200mm will seem higher for a picture taken at 50 feet away than the 35mm will for a picture taken around 8 feet away. The apparent resolution increase of the 200mm lens is 5.7^2 = about 32 times higher apparent resolution for the same object photographed at 200mm vs. 35mm.


22
If Sigma makes a 135mm f/1.8 lens that is twice as sharp and twice as aberration free compared to the Canon 135mm f/2L, and if it costs up to $1,000 or less, it will be the most popular lens in the world. If it costs up to $1,500 then it will be the most popular lens in its category.

That's my prediction, even if it has no image stabilization.

23
Pricewatch Deals / Re: Canon Refurb 400mm f/5.6L $910
« on: April 10, 2013, 05:59:31 PM »
Thanks, I got one. What a deal. I miss these 1993 lenses and actually sold my last one in fall 2012 for $1,000 on CL. Honestly, I'm not looking forward to the next three days with my 400mm II, and am actually craving to return to these lightweight lenses, which are perfect for outdoor track, as soon as I receive my order.

24
Lenses / Re: Migration from zooms to primes...your suggestions?
« on: April 04, 2013, 02:45:05 AM »
Out of your options, my choices would be these:

  • 24mm f/1.4L II (or the Sigma f/1.4 if you don't think you'll need this wide)
  • 85mm f/1.2L II
  • 200mm f/2.8L II

Some might say why no 50mm, but I find myself in almost all situations using either a two-camera combo of two of those three, or a three-camera combo of all three of them. And I get way better shots than the people with their slow, heavy zooms. The 200mm is a slower f/2.8 to be sure, but as a prime it is much lighter and quicker to acquire and track targets (and actually slightly higher light transmission as well). I support your wish to go to primes.

25
Lenses / Re: Do I need the EF 85mm f/1.8 USM?
« on: March 19, 2013, 10:50:18 PM »
helpful how is it that you can use 3-4 times faster shutter speed with an 85mm 1.8 -vs- a 70-200mm 2.8 IS? you can react faster with a prime than a zoom?  halos around out of focus objects making things appear less sharp?

dude, what are you talking about?

I will answer, but by my answer I mean no disrespect to those, like myself, who invested over $2,000 in the 70-200 lens:

In regards to stops:
The transmission of the 70-200 II is T/3.4. The Tstop of the 85mm f/1.8, in both Nikon AF-D and Canon USM versions, is almost exactly T/1.8 as advertised. Let's just say 1.9 to be safe. The reason for the difference is because of the sophisticated lens design in the 70-200mm II that is used to correct aberrations at many distances and many focal lengths, not to mention the extra elements used for the IS unit.

To compute the relative speed of lenses to one another, one simply divides the higher Tstop value by the lower Tstop value, then squares the result.
3.4/1.9 = 1.789
1.789 squared = 3.2, i.e., three times faster of a shutter speed. 3-4 times was a bit of an exaggeration because I did not actually do the math, but was just basing it off of real-world experience.

In regards to out of focus characteristics:
There are those who look at the edge of someone's jersey, and see a halo/blur, and return their lenses, not realizing that the plane of focus is sharp. It happens most often when people are shooting stage events from down in the seating, and their cameras consistently focus around waist level because that's the nearest object within the active focus points, making 80-90% of the shots unsharp.

By no means is the 85mm lens perfect, and yes, it does have the purple fringing problem, but at f/2.8 it does not have it more so than the 70-200 II lens.


26
Lenses / Re: Do I need the EF 85mm f/1.8 USM?
« on: March 19, 2013, 09:19:43 PM »
The 85mm f/1.8 will give you better images at f/2.8 than the 70-200mm II as well much better light transmission.

Actually, the 70-200 II is sharper at f/2.8 than the 85 f/1.8 at f/2.8, and very significantly so in the corners.

Light transmission is only of a concern for videographers. For still photography, through-the-lens metering takes care of those types of differences. And I really doubt there's much of a T-stop difference between the two when used at the same apertures.


No, the corners wide open on the 85mm f/1.8 are 2,888 line pairs per image height, versus 2,954-3,100 for the 70-200mm II. That difference is almost invisible. At f/2.8 they are essentially the same in resolution figures (28 line pairs difference), but the chromatic aberration of the 70-200 mm II is at least five times worse: 29 - 60% versus only 5% for the 85mm f/1.8.

The shallow depth of field of the 85mm f/1.8 causes halos around out of focus details, making people think that it is not sharp, but for me that's the beauty and my intent in using this lens.

It doesn't impress people watching me take pictures, but my photos impress the people selecting them for running in the news. I can react much more quickly, focus more quickly, and use 3-4 times faster shutter speeds.

There is that much of a Tstop difference when used at the same apertures.

As a reference for those who may own the 50mm f/1.4, the 85mm f/1.8 is much better. Even when stopped down two stops all the way down to f/2.8, the 50mm in the corners is worse than the corners of the 85mm wide open.

27
Lightroom 4

My favorite--good job.

28
Lenses / Re: Do I need the EF 85mm f/1.8 USM?
« on: March 19, 2013, 04:55:48 PM »
The 85mm f/1.8 will give you better images at f/2.8 than the 70-200mm II as well much better light transmission.

In Tstops, the 70-200mm II lens is really T/3.4. It is more than 1/3rd stop slower than f/2.8 (not "huge" in the grand scheme of things, but very real). So the 85mm f/1.8 lens is actually more than twice as bright, about 250% as bright.

The 85mm f/1.8 is also lighter and thus more useful in enabling you to remain fresh and keep getting good photos compared to the 70-200mm lens in real world situations where 85mm is an appropriate focal length and/or when you can zoom with your feet. It is much faster in actual shooting of fast action.

The 70-200 II is what you need when you need a zoom and need that zoom to be as perfect as can be. But an f/2.8 zoom can never compete in situations that a fast, lightweight prime lens is designed for.

29
Software & Accessories / Re: Tripod/Monopod - What a clever idea!
« on: March 16, 2013, 12:06:56 AM »
Thank you for this thread. I am always open to something better, and I am already thinking about buying one of these, thanks to you.

30
Canon General / Re: Why did you choose Canon?
« on: March 13, 2013, 11:26:40 PM »
It's photography, and somewhat cameras and lenses in general, that I love, not Canon. I'm passionate about the art that I create with a camera, not about the word on the front of the camera.

So the reason I "chose" Canon was the exact reason I chose and use several other brands--the unique features that I need for making a specific image.

For Canon, this would be some of its lenses, which in their niche are either superior or unique.

And for the same reason I have almost an equal amount of Nikon equipment. For example, today I shot with a Canon camera about half the time and with Nikon camera combo for the other half of the time. Using both of those systems, as well as many others, and being proficient at them, allows one to see photography freely as an art form, not as the customer of a camera brand.

Just like a B.A. normally requires a foreign language, so an M.F.A. in photography should require knowledge of a "foreign" camera system until we know it just as well as our "native" language. Ideally, we should have no other native language except the language of art itself.

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