My lens collection for the K-01 has grown rapidly and contains two cheap lenses that receive little mention. I myself only bought these to justify (by bundling more lenses) the steep shipping cost for a different lens. Ridiculous reason I know but worked out really well. The lenses (both AF K-mount) are:
Sigma 75-300 F4.5-5.6 MACRO
Sigma 28-80mm F3.5-5.6 MACRO
I took a handful of test snaps immediately after receiving them (many weeks ago) but didn't pay much heed to them after that. Instead I used the K-01 mostly with kit lenses (40mm xs, 18-55 DA II). Yesterday, I went for a "nature walk" and found myself almost exclusively shooting with these two cheapo sigmas. The 28-80 at Macro setting, and the 75-300 for tele. Both lenses produced excellent pictures. Color and sharpness were both excellent. AF on both lenses works fine even if a tad slow. My preferred mode of shooting yesterday was to use "AUTO" camera setting except focussing for some macro shots.
A couple pics (and these are typical) are appended. At an artistic level, they aren't special. However, crop and/or look at them closely and the PQ becomes apparent. I don't believe any of the other Pentax lenses that I currently have (two DA kit lenses, and two Takumar primes) can replicate these (simply on spec basis). Pictures are uncropped.
75-300mm at 300mm 28-80mm at 80mm MACRO setting.
Last edited by harioharima; 03-16-2013 at 11:56 AM.