Downsides to no AA filter

awaldram wrote:

Trees and feather and any fine repeating pattern are lilkley to suffer from False detail past the niquest limit causing visible moire in the image.

As fine detail will be considerably better micro contrast will be higher not lower.

Because less sharpening is required high ISO performance will be improved.

Personally I'd think twice about using it for landscape at least wait to see some examples as how bad it is depends directly on resolution.

For me it as if Pentax have built a custom unit just for my shooting