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DPChallenge Forums >> Hardware and Software >> Please, some quick lens advice!
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01/11/2006 08:31:01 PM · #1
Armed with a Canon 20D, I am going to begin taking high school sports photos for parents at local high school (predominantly indoor... initially). I have the Canon 50mm 1.8 II, Tamron 28-75mm 2.8, and soon the Canon 85mm 1.8 - Not sure that the 2.8 Tamron will work because of the less than desirable lighting (and no flash usage).

Question: Would the Canon 70-200 2.8 L be any better at handling the gymnasium lighting conditions than another 2.8 lens? (or, would I just get better quality noise?)
01/11/2006 08:36:12 PM · #2
I have the 70-200 F4 L and it focuses almost instantly and takes freakin' amazing pictures. I assume the F2.8 version is comparable in speed and quality.

Shutter speed wise, however, you're not going to get any real improvement over another F2.8 lens of any type. You still need the same number of photons hitting the sensor to expose an image properly. But the focus speed can be a real lifesaver for shooting fast moving stuff!

The noise should be the same for either lens as well, since most noise is introduced by the chip, not the lens.

01/11/2006 08:36:54 PM · #3
it is possible that one 2.8 lens can be slightly faster than another 2.8 lens because of the T-Value of lenses. There is light lost due to the glass elements. The tamron fairs VERY well compaired to other 2.8 lenses from what i've heard. The lens however doesn't really have anything to do with the noise in an image.
01/11/2006 08:55:53 PM · #4
Depending on the gym, 2.8 might be enough with the 20D, but you'll prolly wind up shooting ISO 800 or 1600.
T-values for lenses do vary, but we're talking about fractions of a stop. They should not concern you. A 2.8 lens is pretty much a 2.8 lens.
The Canon 70-200 will be pretty much equivalent to any other 70-200 as far as light gathering, give or take a fraction of a stop. Any difference will be found in AF speed and sharpness wide open, for which the Canon is noted. I have no relevant experience with the 3rd-party 70-200 class zooms.
If you can, take both the primes (50, 85) and the 24-75 zoom, at least until you can determine if the faster primes are necesary.

01/11/2006 09:47:21 PM · #5
Originally posted by kirbic:

Depending on the gym, 2.8 might be enough with the 20D, but you'll prolly wind up shooting ISO 800 or 1600.
T-values for lenses do vary, but we're talking about fractions of a stop. They should not concern you. A 2.8 lens is pretty much a 2.8 lens.
The Canon 70-200 will be pretty much equivalent to any other 70-200 as far as light gathering, give or take a fraction of a stop. Any difference will be found in AF speed and sharpness wide open, for which the Canon is noted. I have no relevant experience with the 3rd-party 70-200 class zooms.
If you can, take both the primes (50, 85) and the 24-75 zoom, at least until you can determine if the faster primes are necesary.


Here are two of my better images from a basketball game I went to last night. The first shot was taken with the Tamron 28-75, the second was taken with the Canon 50 1.8 - both are straight from the camera (ISO 1600).
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01/12/2006 12:26:51 AM · #6
I think a 70-200 f2.8 lens would be good, it allows more flexibility in composition than a prime, especially since you really can't walk up to for back up from the sidelines.
01/12/2006 12:29:18 AM · #7
In addition to lens, I'd think the use of a mono or tripod would help stabilize the shots.
The 70-200 L 2.8 IS is a grand lens to use in medium range sports where you're not too far from the action, I'd think.
Good luck.
01/12/2006 03:45:09 AM · #8
Originally posted by casualguy:

Here are two of my better images from a basketball game I went to last night. The first shot was taken with the Tamron 28-75, the second was taken with the Canon 50 1.8 - both are straight from the camera (ISO 1600).
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Couple of pretty good shots there casualguy. Looks like your gym has plenty of light. I'd say you have the lenses you need unless you want to be closer in on shots at the opposite end of the floor. The reach would be the only reason to add another lens.
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