flektogon

And the same relation should apply to the DOF, shouldn't it. Peter

Well, but the diffraction is only and only the optical projection problem (fault), regardless whether the image is projected on an optical sensor (and of any type), or on a film, or on a screen. ...

Mark, I looked closely at my Pentax DA 16-45/4 lens. Definitely the note at the bottom (of otherwise very nice tutorial) doesn't apply. So, in my opinion the theoretical diffraction is definitely ...

Beautiful picture!

Thank you Mark for the link. It's very interesting and helpful. And I thought that I know everything :-) . Regards, Peter

Of course that you are right, but again you didn't mention any focal length. And this can be very confusing for the photographers not so knowledgeable with their tools. For example, I've heard one ...

I am not fully convinced that it is reasonable to talk about the "diffraction-sensor size" relation without mentioning the lens focal length. As we know the diffraction is actually a lens feature ...

Really an excellent example what a small sensor camera in a big heart photographer can do. Peter

Many Pentax (and other brand) shooters would be happier, if Sigma decided to make their SD Quattro with the different mounts, including the K-mount, exactly like they make their lenses.

Both, the Canon G7X(II) and the new Nikon DL25-85 are great cameras. But the G1X Mark II is not worse at all. Because you already have it (i.e. G1XII), it makes no sense to get any of those 1" ...

Well, the impact of the sensor movement on the vignetting has to be negligible, as I doubt that the sensor moves more than 1-2 mm from its centered position during the SR activity. Peter

I can't imagine how the SR and any (potential) vignetting are related...

Richard, Now this forum (Pentax SLR Talk) doesn't contain anything else just the K-1 related threads. Wouldn't it be desirable to split it into two forums, i.e. to create a new, something like ...

I fully agree with your with what you wrote, except the last, the subject separation issue. I think (though I might we wrong and you right) that the subject separation is determined by the lens ...

Out of each pair just one picture is O.K. Those straight out JPEGs are to the last one very poor. What's going on? I remember Fuji's OOC pictures to be excellent.

:-)

Just to discuss whether the SR if engaged can actually be counterproductive (i.e. cause the picture degradation - unsharpness). Peter

You see, why do you think that the turning (the SR) off might be an option to make it sharper? I claim that if the SR (when engaged) doesn't help (like if the camera is really on a sturdy tripod), ...

When you press the shutter button fully (i.e. taking exposure) the mirror at first goes down, then it goes up (now the shutter mechanism exposes the sensor), after the exposure is done the mirror ...

I think that you both are talking a little bit off topic. The question is, whether the SR turned ON, when the camera is on a steady tripod (so any type of SR is basically not needed) can cause the ...