In the lens testing, DXOMark use a variety of camera bodies which you can select when you select the lens, so you can see how their results depend on lens and camera body.
#Popular photography dxo optics pro free 2016 iso#
DXOMark heavily weigh base ISO results in their scoring. For sensor testing, senscore equally weight the whole ISO range from 100 to 25600 (if I recall correctly) in coming up with their sensor quality ratings. There are other sites which seek to quantify sensor and lens quality, such as and These sites differ from DXOMark in several ways. I usually select the focus point closest to the subject (or the most important part of the image) and use that, effectively correcting the effects of field curvature on many real-world subjects. When I use a lens, I never focus on just the center of the frame and assume everything else that is in the plane would be in focus. This would help explain why there is such a discrepancy with real world results in their wide angle tests. I suspect one aspect that they don't test is focusing on each part of the frame separately, to correct for field curvature. For telephoto lenses, there is some correlation my personal experiences, so I can say that they didn't just come up with the numbers out of thin air. Especially with wide angle lenses, I don't find any correlation between my own findings and DXOMark's assessment of lens quality.
I feel that they have not been able to quantify what looks good to the human eye and just test something technical that they can do easily. However, I haven't really found that DXOMark's lens tests correlate with my own findings. I like DXOMark's sensor tests, although they are not perfect, they are at least a good effort in establishing some kind of standardized tests on raw images instead of the processed images that come out of the raw converter.
Other manufacturers also make fine lenses.