My K10 doesn't seem to like my Tamron 70-300 lens. Since I bought my K10 I have noticed that it seemed harder to get good shots with this lens on the K10 than the same lens on my K100. I tested the lens on both cameras and noticed that when using the K100 the images were slightly sharper than the with K10. When using the macro switch the depth of field is noticeably less on the K10 than on the K100 when set to Av. There are no problems with my Pentax 18-55 & 18-250. Does the K10 require digital lenses to get the best results?
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