[JJ_SO]

Reality is the camera I have with me and the lens in front of it. Comparing systems by ignoring the advantages of it and reducing other parameters scientifically so they could fit to a different system makes not much sense to me. There are limits of miniturization and other limits of being able to transport a large unit, not to mention to handheld it or to drag attention by pointing a bucket of glass at someone.  ^_^ Also, it's only working downwards - blowing up an APS-C sensor to FF is plain stupid, the pixels just won't increase.

 

If I look how good a certain lens is - and keeping in mind that PZ always tests only one copy - I'm not interested how good an incompatible lens might be compared to the one I'm interested in an for which I own a host body with the right mount