[mst]

Your math skills seriously suck 

And your logic skills are simply... Well, to be expected from Brightcolours

Sorry to be harsh, but allow me to add that you both seriously lack communication and behaviour skills, especially when arguing against each other.

Klaus' point was: he has done longer tests in the past, reaching up to 800mm equivalent focal length, which is no doubt longer than 600mm on full-frame (!). The Tamron is a full-frame lens and will be tested on a full-frame camera (if at all).

When the 200-500mm lens was reviewed, full-frame tests were nothing but a distant dream here at PZ, that's why testing it on APS-C was the only option.

-- Markus