[Klaus]

You can test conventional MTFs on an optical bench. This is "just" a matter of costs. However, this is purely a lab test - it ignores the interoperability of lens and camera sensor. This is e.g. most obvious when testing symmetrical wide-angle lenses on mirrorless cameras. The real world result is very different from an optical bench. This is not just a mirrorless issue. The real world vignetting is much higher on a DSLR than on the lens alone just to mention an obvious effect.



We looked into providing contrast data in our test. However, the problem is that these results not overly stable so as of now we are feeling uneasy to publish this.



Klaus