Originally posted by beholder3 Really?
Yes, really.
The higher the spatial frequency, the less the chance that it will occur in a natural scene. There aren't too many people around holding up a chess board in 200m distance while you are happening to focus at this distance.
Seriously, video cameras with 2MP have a lot of moiré problems. Medium format cameras have a comparatively small moiré problem. The D800 has less of a problem than the K-5, etc.
Moreover, the imaging system has natural optical low pass filters such as lens aberrations at large apertures and diffraction (at all apertures but the smaller they are, they higher the effect). Given sufficient MP, the lens alone will remove any chance of moiré of appearing.
Originally posted by beholder3 If you actually do get moiré (or other artefacts) with a K-5 IIs it really means just that
- you have chosen a special subject which has very even, repeating structures / patterns, which coincidentally happen to be in exactly the detail level which interferes with the pixels
- you have not realized this (understood the scene) before the shoot and adjusted your parameters accordingly, similar to not realizing you have flare risk because of the sun in the frame or clipping risk because you put a bright grey sky into the frame.
I never claimed that cameras like the K-5 IIs are unusable, However, as Falk (falconeye) already wrote from experience, it is not straightforward to predict moiré, i.e., it can be hard to provoke if you try and it can rear its ugly head when you didn't expect it.
Look, I never meant to convince everyone that cameras without an AA-filter are evil. I just wanted to provide a counterpoint to all the "
dramatically improved resolution with negligible risk"-hype that surrounds the K-5 IIs. The K-5 IIs can be a great choice for many, it just should be chosen with the full knowledge of all consequences.