Foveon X3 - resolution, DPI, interpolation, comparision with Bayer resolution - by Laurence Matson

Started Dec 25, 2012 | Discussions thread
richard stone
Senior MemberPosts: 1,574
Like?
It's very simple, not just easy
In reply to Roland Karlsson, Dec 26, 2012

So, as you see it, liking the sharper images from a Sigma camera/Foveon sensor is a matter of opinion? Or, shall we say, personal preference? And that preference sometimes relates to the subject matter? And the images from the Foveon sensor are sharp(er than Bayer, etc.) only (or is it mainly?) because they are not degraded by an "AA" (blurring) filter? (That makes sense, otherwise why would such filters sometimes be referred to as blurring filters?)

But really Roland, what's the point?

If you don't put an AA filter in front of a "standard" CMA/Bayer sensor you get moire. Some people are just all wound up about moire and for some uses (and users) moire is an issue. You don't have to worry about moire with Foveon, unless you are a person who can detect "luminance" aliasing, and apparently very few can. And even fewer care.

The quality of an imager is not solely determined by how "sharp" the image is, but the "sharpness" of an image is an aspect of photography, and it isn't trivial. Try considering (for a moment) that detail never captured is simply lost, and cannot be recovered by any manner of sharpening. Thus any time you feel like discarding some detail from an image you have that choice. Or you can simply use a Bayer sensor at the beginning of the process, and never have to worry about that annoying excess sharpness.

Richard

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