Canon EF 16-35mm f/2.8L USM vs Canon EF 17-40mm f/4L USM?
Discussion
I looked at both of these about 2 years ago, and ended up getting the 17-40mm. It's a great lens if you want wide angle, and I really like it.
I figured that I wouldn't miss the extra 1mm at the wide end, plus you get an extra 5mm at the long end. I normally use it at f8-f16 anyway (camera on tripod), so f4 rather than f2.8 didn't bother me, and it is a fair bit cheaper which made the decision even easier
There's a good review comparing them both here
I figured that I wouldn't miss the extra 1mm at the wide end, plus you get an extra 5mm at the long end. I normally use it at f8-f16 anyway (camera on tripod), so f4 rather than f2.8 didn't bother me, and it is a fair bit cheaper which made the decision even easier
There's a good review comparing them both here
srider said:
V6GTO said:
Under what circumstances would one need f2.8 @ 16mm?
Martin.
when you only want the point of a pin to be infocus?????
uh, at 16mm and f2.8 at lot more than the head of a pin will be in focus.......
....it was jokethe DOF at 16mm @ f2.8 is not going to be very big is it
HankScorpio said:
about 3cm dof at 28cm
Don't forget chaps that depth of field also varies depending on sensor size.
Have a look at this handy little piece of freeware:
www.stegmann.dk/mikkel/barnack/
That was based on APS.
Still a pretty big pin.
www.dofmaster.com/dofjs.html
Also lets you print charts to to tuck in the bag.
www.dofmaster.com/doftable.html
Still a pretty big pin.
www.dofmaster.com/dofjs.html
Also lets you print charts to to tuck in the bag.
www.dofmaster.com/doftable.html
Bee_Jay said:
about 3cm dof at 28cm
Don't forget chaps that depth of field also varies depending on sensor size.
Have a look at this handy little piece of freeware:
www.stegmann.dk/mikkel/barnack/
No it doesn't!
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