24-70 F2.8 or 28-70 F2.8 ?

[franksit]

I have a Canon 10D and 2 lens - Canon 16-35 F2.8 L & Canon 50 F1.4.

I'd like to buy either one of the following lens... but I am not sure which one is better? Your comment is highly appreciated!!!

1) Canon 24-70 F2.8 L
2) Canon 28-70 F2.8 L

Thanks!

[Clif]

I have owned both, currently use the 24-70. While it appears the 24-70 replaces the 28-70, the latter is still listed in the EF Lens brouchure.

The 24-70 embodies many improvements, improved dust and moisture sealing, closer focusing, faster focusing and is claimed to be sharper. I use mine as a primary lens on the EOS 10D. Along with the booster grip it makes for quite a load to carry for extended periods.

I traded up primarily because I wanted the wider low end for digital use. However, the 28-70 is still a great lens and now available for considerably less than the 24-70. Since you already have the 16-35 you don't need the additional 4mm of overlap with the 24-70.

[David Lawson]

With the lenses you already have you have most of the 24-70 range covered, 24-35 on the zoom and 50mm. I would therefore suggest that a 70-200 would be a better next buy. I have the 24-70 and it's a good lens vignettes a lot at 24mm f2.8, which the Sigma it replaced didn't nearly as much. Probably why Sigma put a 82mm filter thread on, Canon stuck with thier 77mm standard. This has been a Canon failing and is why the 80-200 vignetted at with 72mm filter thread and the 70-200 with 77mm didn't. David

[seamansroost]

So as not to confuse. Are you saying that you get vignetting at 24mm with a 10D? How is that possible with the 1.6 factor? That means with a full frame camera it would be like you are looking through a keyhole. I have a canon prime 24mm and have no vignetting. I just ordered the 24-70, so now I'm questioning it.

[David Lawson]

No not tried it on 10D, I got vignetting on film. The Sigma did not vignette nearly as much which I put down to filter size but I could be wrong. They both had Hoya super HMC Pro1 filters attatched. I try all my lenses on a film body at full aperture, because they are designed to work on full frame, I hope. I am of that age and have been looking at tranny's for decades. You'll probably be fine on 10D. I've not used it on my 1D except to check for front focus. "Don't worry 'bout a thing, every little thing going to be alright." : ) My main point was why
"franksit" was going for this lens when he had most of it's range covered. David