IS - worth it?

[mrchirster]

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]

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]

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]

..... 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]

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]

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.