[Brightcolours]

[quote name='popo' timestamp='1310666550' post='10020']

I believe there are some big physical challenges with testing longer focal lengths. Also there is some point where the lens is too "high end" or costly to be tested.



Back on my APS-C retest theory, there's the following done at 8MP but not 15MP:



4 stars:

70-200/4

300/4

300/4 IS



3.5 stars

400/5.6

100-400L



Apologies if I've overlooked some 70-200 models, there's enough of them!



Edit: wasn't the 400/5.6 recently retested on FF? So that's a good chance of retest at APS-C too?

[/quote]

I think 400mm on APS-C is a bit too long for Klaus to test at the moment?