Posted 11/20/2012 08:44 (#2707325 - in reply to #2705457) Subject: RE: canon 70-200 F/2.8 lens
Tilley, Alberta Canada Location 50.3967 -111.6762
I have a 70-200 F 2.8L IS II USM (what a mouthful). It is a great lens but I would consider it a purpose lens rather than a walk around lens. Every part of the title has a meaning.
70-200 is of course the mm focal length of the lens. It will respond like a 70-200 on a full format camera. I shoot with it mostly on my Canon 7D and it responds more like a 100-320 mm lens. About 50mm is what your eye sees.
What camera do you use?
the F2.8 is the focal length over the diameter of the lens pupil??? in short the f 2.8 lets in twice the light of the f 4. it sounds serious but may only come into play in a very small percentage of the shots.
The L is canons luxury series of lenses. I believe they are worth the money...
IS is Image Stabilization and the lens I have has two modes. One mode is stable in both directions. One mode is for panning in action shots. I like IS as my hands age they are not as stable as years ago. I am not sure on the lens you mention
The II is a second series lens and I am not sure what changed.
The USM is Ultra Sonic Motors for the focusing which provide better and quieter response on the focusing I believe.
You didn't ask but my walk around lens is a Canon 24-105 F4L IS USM.
Hope that helps. Dan...
Edit for 320mm typing in the dark!!?? Dan...