On Mon, 15 Sep 2014 09:06:44 +1200, Eric Stevens
wrote:

On Sun, 14 Sep 2014 09:33:29 +0200, Alfred Molon
wrote:

In article , Floyd L. Davidson says...
Any good optical engineer could work it out, given the
right equipment and a fairly fat check.

That's not a likely route for any but the most serious and
well healed.

I'm wondering if the lens manufacturer could measure the point spread
function for its lenses and provide this information to image processing
applications, so that these could calculate the optimal sharpening
function.

In other words, software would compensate (at least partially) for the
weaknesses of a lens, as it is being done with vignetting or geometric
distortions in cameras.

I suspect that DxO does something like this: otherwise they could
operate ytheir 'Lens Sharpness' control of which they say:

"Lens softness compensates for the difference in sharpness between
the the center of the image, which is always better, and the edges,
where it is softer".

Let's try that again:

I suspect that DxO does something like this: otherwise they could not
operate their 'Lens Sharpness' control of which they say:

"Lens softness compensates for the difference in sharpness between
the the center of the image, which is always better, and the edges,
where it is softer".
--

Regards,

Eric Stevens