Tagged Questions
1
vote
2answers
352 views
Pentax DA L 55-300mm lens very soft--is it broken?
There seems to be a problem with my DA L 55-300mm lens, with very soft output at or near the telephoto end:
Wide-open test shot
Pentax K-5 with Pentax DA L 55-300mm @ 300mm. Av, 1/320s f/5.8 ISO ...
4
votes
2answers
225 views
What would cause a Pentax SDM lens to stop autofocusing, and what can I do?
I've read many reports that the SDM autofocus motor in some Pentax lenses may stop working after several months or years of use. Why does this happen, and is there anything I can do to prevent ...
