Quote:Klaus, this was fast.
Will this lens work/af with 1.4x extenders on a 6D?
Talking about extenders, you should add 1.4x resolution results to the review. Many will be deciding between this and tamron/sigma 150-600s and it will help.
Also I will appreciate the close focus results as the MFD is good.
And lastly, focus breathing 
What's the focal length at 400mm at 10 feet?
Well done,
Nde
When you use a Kenko TC, the center AF point probably will still work ok in good light.
The focus breathing, I can't answer what it is like at 10 feet (about 3 meters).
I just figured out what it is like at MFD (comparable to what the 70-200mm's from Canon have FOV wise):
http://forum.photozone.de/index.php?/top...n/?p=28419
Hi, please PLEASE repeat the tests on a crop body, ideally comparing it to the version 1 (which unfortunately means you'd have to test it again on the 15MP testing body). There are a lot of birders looking at the 7D II/100-400 II combo right now, so performance on pixel-dense sensors is very important, even if those sensors are small.
In short, please compare this lens to others on a crop body. Thanks for the quick review!
I have just uploaded some sample images into the review.
Quote:Hi, please PLEASE repeat the tests on a crop body, ideally comparing it to the version 1 (which unfortunately means you'd have to test it again on the 15MP testing body). There are a lot of birders looking at the 7D II/100-400 II combo right now, so performance on pixel-dense sensors is very important, even if those sensors are small.
In short, please compare this lens to others on a crop body. Thanks for the quick review!
At some stage I may do this but not on the short term.
First I will have to see how it goes with the Tamron 150-600mm on full format.
Very Stupid Question: do somebody figure out how it performs on a Sony E-Mount via adapters? Also for what concerns focusing speed.