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Stellar lens, no weak spots

Started Oct 13, 2021 | User reviews thread
FingerPainter Forum Pro • Posts: 11,571
A weak spot

dmanthree wrote:

Leigh A. Wax wrote:

There is nothing man made that is of such utter perfection that it has "no" "weak" points!

I never said perfect. There is a huge difference between an optical imperfection, which all lenses have, and a weak spot. A weak spot, such as softness at a certain focal length and aperture combination would force you to NOT use that setting. That's what I consider a weak spot. You do not need to compensate for this lens.

Well the edges (not even corners) at f/4 and f/5.6 at 100mm are so weak I certainly would be forced not to use this lens for certain shots.

If, as you seem to admit, you haven't even tested for this, or for field curvature at a number of subject distances, you are in no position to make a claim of "no weak spots".

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