« on: November 09, 2013, 03:25:01 PM »
I used to use the venerable 100-400 for wildlife and bird shots. After I bought the 70-200 f2.8 II I started to use that, coupled with the 2x III extender, for the same purposes. I had read mostly negative reviews about extenders, but, to my amazement, the images I get out of this combo are nothing short of astonishing. IQ is equal, or even superior, to the one produced by the 100-400. Autofocus speed, however, takes a hit, which is visible. Still, that to me seems to be a bit faster than the autofocus speed on the 100-400. I'm tempted to use the combo, instead of the 100-400, now, but its weight discourages me to do that, if I'm shooting without a tripod. What do you guys think?
I have the same combo Dave. I love them both but when I'm shooting birds and such, I usually grab my 100-400mm with my 5D MkIII.
I used to use my 70-200mm f/2.8 IS II on my 7D more than my 100-400mm but after using the focus software on both, my 100-400mm became like a brand new lens to me, nailing focus very accurately and leaving me very, very pleased!
Today I shot with both, so I'm going to be paying a little more attention in post to compare and see what I like better. I was shooting a soccer match and used each lens about 1/2 the game...
I started with the 100-400mm and switched at half time to the 70-200mm. I didn't use my extender, I wanted to see if I lost anything in cropping and still gained anything in IQ.
Right away, I saw a significant difference on the screen on camera. The IQ and DR seemed better with the 70-200mm but I'll arrest final judgement till after I get them on my pc for processing...
I've just really loved my 100-400mm again after running it through FoCal...
+1 ... I love my 100-400, too, Krob. To be honest, I don't really feel like parting with it. But, I shall see.
Indeed! It is a bit of a dilemma!