OK, if its about video, I know that on the K7 / K5 models it is the 'mechanical' ie: moving sensor type of shake reduction that is active - you can hear it working and the sound changing as the camera moves around and see the 'floating picture' effect on the LCD.

I was not aware that Pentax had changed the basic concept of the SR system for any new camera at this stage.

I was looking at it only from the point of view of 'on the shoot' - ie: in the majority of situations users will only have the rear LCD to 'look at the image'. This is not the the ideal medium for examining such details, even assuming you knew exactly where on your shot to look, and it only interferes with your photography flow.

We can make the judgement 'on the shoot' whether to switch on RAW + Jpeg if needed based on an established 'means of assessment' of the scene - what I'm trying to say is we don't yet have such established and reliable criteria for assessing the scene in order to decide whether 'Moire Reduction' should be on or off.

'Moire Reduction' - is that my own term, is that the official term? Seems to describe it - you can't say 'aa filter' can you?

I agree with kv above that a bracketing function for Moire reduction is logical. I don't think the judgement on Moire on a shot is always going to be possible to make in the field on a shoot. My earlier comparison with raw/jpeg choice is apt isn't it? But this choice is easier to make . We don't yet have a clear assessment process for deciding on Moire reduction do we?

:: I've never heard that. 'Image Stabilization'on Pentax is Sensor Shake Reduction on all the current DSLRs, AFAIK, IMO, even on the IoW

I've just spotted on the specs listed here on our site for the K3 that its going to have a mode dial with a choice of locking it (like the K7 / k5 does now)or not - thats something I've heard complained about in reviews as well by users. So its good to know Ricoh / Pentax are listening and trying to improve on the little details as well

To be fair, there's still the same argument (or comparisons to be made between images taken with the reduction on or off) .... it's just that now you only need to own one camera instead of two to be allowed to pass judgem.........

It's a plus - a much easier marketing proposition than having an 's' and 'non-s' version to sell. And it's a first, a good marketing thing in itself

But clearly Pentax's technicians consider moire to be a significant enough concern even on the new 24mp sensor to go to all the touble. the skill is going to be to learn how to identify the risk in any given scene and make that extra judegment on the activation or not.

That is almost to suggest that the new revolutionary technology for its reduction is mostly marketing - if the risk is so limited as you suggest why would Pentax go to so much trouble to provide this sophisticated new system? Wouldn't a PDCU upgrade for the odd bit of it now and then be far easier?

Someone at pentax must consider moire a significant issue even at 24mp.

Its not even '3 times better' than a K7. But that doesn't mean that what its offering on top of a K7 is not worth 3 times the price.

No, of course it's not ..... but when something's brand new you pay that premium for the latest and greatest. You might feel 3 times better for having got one!