Hollywoodgt wrote in post #13800673
400mm 2.8L
400mm 2.8L MKI
400mm 2.8L MKII This is the one so I believe it has a better AF than version I
400mm 2.8L MKII IS
Since it's a heavy lens, my thoughts you would be using it on a mono-pod or a tripod so the IS wouldn't be a big factor...but I'm not sure. Also I'm not sure on the price, it seems a little high, but havent been able to find many sales or info on this lens for resale
No, he was correct. http://www.canon.com …s/ef/super_telephoto.html
400 2.8 NON-IS (which is somtimes called a MKI because there is a MK II, nothing is ever called a MKI unless it has been replaced simply to make it clear what one is selling)
400 2.8 NON-IS II, which is what you are looking at I am sure
400 2.8 IS (same as above, no such thing as a MKI)
400 2.8 IS II the newest lens available now, extremely expensive.
$4,900 for the non-IS II sounds a little high to me, maybe more like $3,900-4,200.
When used on a monopod or tripod IS is not entirely neccesary, I use a 500 without IS, however it can't hurt to have it. At slow shutter speeds you are going to want to use a remote release and mirror lockup anyway.
For the money if I were you and with what you want to shoot I would rather purchase a 300 2.8 IS, and a pair of extenders. 300 will be a lot more versital for sports (400 would be optimal for large field sports as mentioned above, 300 is still usable for court sports such as basketball as well), and can be a 420 F4 or 600 F5.6 for motorsports, nature, and birds.
The 400 II is just such a huge lens at 13 pounds. The newest 400 is 8.5lbs, the 300 2.8 IS is 5.6 lbs, and my 500 4.5 is 6.6 lbs.
If your priority is nature and birds I would skip them all and go for a 500 or 600. Just my two cents.