Originally posted by pentaphil That's something I aksed myself before
Hope someone can help us
People already have answered this. As it is now, Pixel shift is for studio conditions
mostly. I say mostly because one could use it outside as well but in very limited situations where you would have zero movement of the image shot. So landscapes is out of the question (hot air, wind, snow, rain cloud moving) will probably produce zipper artefacts. You could maybe process them but.. really, i for one am not seeing it as a feature i would make use of under these circumstances. A better quality lens will be more practical or a lens you know well how to use would weigh more towards the clarity of your photo.
I recently debated this choice myself (this december) and went with the K-3 for the following considerations: superb kit for 650$ (K-3 body+50mm 1.8+af-200FG flash) vs 729$ K-3II Body (at that time)
I thought that if in the future i will want the GPS feature (it's something i would like but, as fellow pentaxian
pathdoc wisely said, buy for what you are using and really need now) i could go with the separate GPS for the hotshoe Pentax sells.
But for studio product photography, Pixelshift is indeed a great thing to have, you probably have seen the examples on the internet.
One more thing/reminder, in case you will buy this fine apparatus from the US use the link on pentaxforums towards the particular supported store:
https://www.pentaxforums.com/forums/94-pentax-price-watch/101329-do-you-buy-a...taxforums.html
Good luck!