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View Full Version : IS - worth it?



mrchirster
08-15-2010, 04:48 AM
Hey guys, I'm thinking about either getting the
Tamron SP AF 17-50mm f2.8


or the much more expansive
Canon 17-55 mm IS

Since I'll use the t2i mainly for video and mostly for documentaries... is it worth getting a lens with IS? or is that more for still photography?

muso12
08-15-2010, 05:05 AM
If you want continuity of light between the varying focal lengths on the Canon you'll need to stop it down to around f5.6, making it quite slow.

If that isn't a problem go for it.

I do narrative work. Since the camera is on sticks most of the time, IS holds little importance.

mrchirster
08-15-2010, 05:22 AM
hey muso I'm not sure if i fully understand... The Canon 17-55mm is a f2.8 through all the focal lenghts! http://www.the-digital-picture.com/Reviews/Canon-EF-S-17-55mm-f-2.8-IS-USM-Lens-Review.aspx

Randall_Oelerich
08-15-2010, 05:50 AM
..... The Canon 17-55mm is a f2.8 through all the focal lenghts! http://www.the-digital-picture.com/Reviews/Canon-EF-S-17-55mm-f-2.8-IS-USM-Lens-Review.aspx


That is just plain crazy talk, LOL. Amazing, I had never heard of a lens that could do that before this thread. Wow.

mrchirster
08-15-2010, 05:57 AM
dear mr. oelerich, i'm happy for any kind of corrections and suggestions you might have! trolling is definately not appreciated!
I'm referring to a "constant aperture zoom lens" in my post above if this might be a more appropriate term...

muso12
08-15-2010, 08:19 AM
hey muso I'm not sure if i fully understand... The Canon 17-55mm is a f2.8 through all the focal lenghts! http://www.the-digital-picture.com/Reviews/Canon-EF-S-17-55mm-f-2.8-IS-USM-Lens-Review.aspx

my bad...was referring to the 18-55. You're right.