I have some doublts regarding the quality of my canon lens.


Context : used on 5D M2 (top class with 24-70 f2.8).


See 2 photos taken on tripod timer 2secs, zoom 200mm, iso 400,IS off. The images are viewed via DPP at 100% with AF set on central focus point.


Single difference : Photo 1 at f8 and photo 2 at f4. The quality difference (blur) between the two is so important compared to the results of different tests made with that lens (a.o. on this site).


Thanks for your opinion on this observation.





Bernard.


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