Klaus,
What are your thoughts on Lenstip/optyczne comparing results across different systems? e.g. they test one lens on a 5D iii and another on a A7r II and suggest the 5D tested lens is "better" as it has a lower disparity between centre and corner resolutions. This does not seem like a robust conclusion.
Also some of their tests seem to differ significantly from other sources. e.g. Sony 55mm 1.8 ZA and 85mm 1.4 GM tests suggest that these lenses are underperforming, yet Lensrentals and DXO suggest very high performance.
Lens rentals seems to be the real benchmark test for resolution testing since the results are truly comparable and account for manufacturing variation. However they do not evaluate other characteristics (bokeh, flare, AF etc..)
What are your thoughts on Lenstip/optyczne comparing results across different systems? e.g. they test one lens on a 5D iii and another on a A7r II and suggest the 5D tested lens is "better" as it has a lower disparity between centre and corner resolutions. This does not seem like a robust conclusion.
Also some of their tests seem to differ significantly from other sources. e.g. Sony 55mm 1.8 ZA and 85mm 1.4 GM tests suggest that these lenses are underperforming, yet Lensrentals and DXO suggest very high performance.
Lens rentals seems to be the real benchmark test for resolution testing since the results are truly comparable and account for manufacturing variation. However they do not evaluate other characteristics (bokeh, flare, AF etc..)