A Workout, but Well Worth it
ByCanon EF 100-400mm f4.5-5.6L IS USM Telephoto Zoom Lens for Canon SLR Cameras Review
If you use this lens on a 1.6X camera body such as the XT, 20D, or 30D you end up with a 160-640mm equivalent which is an impressive range by any standard. You can also add the 1.4X TC for a 896mm upper limit or the 2X TC for an amazing 1280mm. Of course this comes at a price, and I’m not just talking money. You will have to use a tripod, cable release, and mirror lockup a lot of the time when using such long focal lengths. Plus this thing is very heavy and very large and people will take notice. So if stealth photography is your goal, go with something like the 70-300 DO.
That being said, this is an amazing lens, admittedly a little slow near the long end, but to get down to f/4 would have most likely doubled or tripled the price and weight, so it seems like an acceptable trade-off.
If you want sharp pictures, an amazing zoom range, and a good workout, but don’t mind being the center of attention, this is the lens for you.
Brian Koch (MI United States)
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