with downsized samples and crops..
1. K-5: http://article.pchome.net/content-1229488-1.html
(Simplified Chinese, Google Translated English Page Here)
2. K-5: http://www.neocamera.com/review.php?id=245&review=samples
3. 645D: http://www.photoradar.com/reviews/product/pentax-645d-review-0?page=0%2C4&t=1289919303