« on: October 17, 2013, 11:14:32 PM »
I'm currently shooting with a 60D at the moment. The first telephoto lens I purchased was the 50-250. I enjoyed that lens so much I decided to buy another lens of even more reach. I looked at the 300 F4, 100-400, and the 400 F5.6. Being that photography is a hobby for me. I made my decision based soley on photos I could capture vs so-called image quality. From all the research I did the 300 F4 has the best IQ, followed by the 400 F5.6, then the 100-400. Now to be honest there are more than a few SHARP 100-400 floating around out there. I came across a few photos that were sharper than the 400 F5.6 and the 300 F4.
It just depends on who you talk to and what information you come across the web. Now back to my statement about photos I could capture vs. image quality. I'm into all wildlife, so being able to shoot at 100mm in one second then zoom all the way out to 400mm is really an advantage to me versues being at a fixed prime. Of course I'm not knocking primes and would jump on a used 500mm F4 IS for a good price in a heartbeat, but right now I'm doing more than good with the 100-400.
Being able to zoom out to find a bird, lion, etc, then zoom in to 400mm really comes in handy. But don't take my word for it. Look at these photos of an alligator I walked up on. All photos are not cropped.
Plus you can still zoom with your feet. So if 100mm is too tight move back. If 400mm is still to short move up if you can. Thats what I did with this alligator. I took photos at different distances while zooming.