I have been testing some older glass on the K-1. There were some comments early on questioning how this glass would perform so here are some test shots.
Notes:
1) I think the way this test chart is supposed to work is that the camera should be placed so that the chart fills the frame. I did not always do that, on zooms I set the tripod up and did not move for other focal lengths. On some of the wide angles I could not get close enough to the chart to fill the frame. ON some I could not get far enough away in my studio. So I'm not sure you can make any determination on the resolution by reading the lines.
2) These are not scientific tests, just casual shots to support my own decisions on lenses.
3) For the zooms there are 6 shots, one at wide open and one at f/8 at three different focal lengths. Roughly wide, middle and long. For primes there is just two shots, wide open and f/8.
4) The reference shot should be the Pentax-F 50mm macro @ f/8
5) The DFA 24-70 f/2.8 and the DA*60-250 are included for reference.
6) I will be adding more lenses as time permits.
7) I am not going to make any comments on individual lenses, I am honestly not all that good at this. But feel free to look and comment if you want.
Here is the link to the album on Flickr:
https://flic.kr/s/aHskx21uhp