08-13-2014 08:55 PM - edited 08-13-2014 09:32 PM
07-08-2017 07:12 PM
One thing they haven't mentioned is the fact the T3i is an APS-C crop sensor camera. So your EF 70-200mm lens is going to be about 1.6x more than the 70-200. The 200mm will be more like a 360mm on the T3i. The 55-250 lens is an EF-S lens, so it will be a true 55-250mm. I to shoot the Canon T3i and am considering this lens. Especially since it is way cheaper than the 2.8 version. Hope this helps.
07-08-2017 07:22 PM - edited 07-08-2017 07:22 PM
That is not correct. The EF-S lens line use the same language re how many MM they are as the EF line up does. It's confusing to some but in the long run everything can be compared using one standard. Even P & S cameras give comparible numbers in their specs using the old 35 mm film lens method still in use.
07-08-2017 07:58 PM
cicopo is correct. mm is mm and always will be.
"Especially since it is way cheaper than the 2.8 version."
It may be way cheaper but that is where any comparing has to end. The two lenses. except sharing a similar focal length, have nothing in common. Hope this helps, too.