Lens math question..

What would be wider, 24mm on a FF or 17mm on a crop??

My calculatons say 17 x 1.6 is 27 mm about ......

thanks

Your calculations are correct.

so would 3 or so mm make a big differance?

It makes much more difference at the wide end, rather than the long end, so yes, I'd say that 3mm is a lot. Of course, your mileage may vary.

All depends on use... if you're trying to take a picture of a mural along a narrow hallway... every little amount of view helps... if you're in a field somewhere... you won't notice at all.

shayneyasinski wrote in post #13147543
so would 3 or so mm make a big differance?

12.5% wider. Not huge.

I have both FF and Crop and only a 17-55 2.8 IS and nothing for the FF in that range other than my 50MM so it was a decision between the 24-105 and 24-70 but the 24-105 feels like a toy and distorts at 24mm so the 24-70 it is!!

thanks

Given your kit, I'd go for the 24-70mm. I traded my 24-105mm for the 24-70mm. My only regret was the loss of IS at the longer end until I upgraded my 100mm to the 100L. Now I have a better macro lens (100mm L) that periodically substitutes for the 70-200 in situations where the white lens is too much.

take your 10-20mm on one of your crop cameras...go from 15-17mm...that'll be the difference

DreDaze wrote in post #13147760
take your 10-20mm on one of your crop cameras...go from 15-17mm...that'll be the difference

Thanks, Never thought of that...
I also never seem to think of good poses at the gig , always when I get home ..