On Sat, Oct 17, 2015 at 7:16 PM, Darren Addy <[email protected]> wrote:

> "Diffraction Correction" is interesting. Anyone have any ideas on that one?

The K-3 has had it since firmware 1.10. Some sort of in-camera
sharpening that takes advantage of knowledge of the lens and aperture.
Not sure if it affects raw or just JPEG.

http://www.ricoh-imaging.co.jp/english/support/digital/k3_s.html

> ".78x" finder" seems like selling a shortcoming as a positive. That's
> a terrible difference between what you see in the finder and what you
> are actually capturing, isn't it???

That's quite good, actually. It's the size of the viewfinder image
relative to real life, quoted (by convention) with a 50mm lens
attached. Obviously with a longer lens, the image appears larger, and
with a wider lens it appears smaller. It's not viewfinder coverage,
which is how much of the exposed frame the viewfinder shows you (that
has been 100% for Pentax's better APS-C DSLRs, and I expect 100% for
FF). For comparison, the Nikon D810 is 0.70x, and the Canon 5DmkIII is
0.71x.

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