Originally posted by ruoyun.huang Many ppl report the improvement of K5IIs over k5.
Nevertheless, there are also other ppl saying no big difference.
My guess is the improvements, if there is any, does not worth the 400 bucks after all.
Not necessarily -- it depends on how you use the camera. If manual focusing isn't an issue and you are ok with sub-par low light AF, then the regular K5 should suit you fine.
However, if AF (especially in low light) and the extra bit of dynamic range are important, then the newer K5ii is definitely worth the $400.
As for K5ii vs K5ii-s, that ultimately depends on if you want consistent moire-free images vs ultimate sharpness for large printing & tight cropping.