if this is true then there must be a way to fix the problem..

autofocus is one of the most important things in a modern dslr cameras in my opinion, referring to your similar problems if that's so then I really don't understand all the fuss about how great k-5 mkI was in all the reviews etc..


I have heard about autofocus weakness especially in low light but this is really unacceptable..,

manual focus ? no no I left my k10d and paid for the latest camera model and ridiculous price for an auto 50mm (in comparison to other camera brands) to manual focus ?

thank you very much for your replies,

I have cleaned the contacts but not with a "good" cloth so I'll give it another try.., the autofocus is set to the center and now there aren't any other lenses or bodies to test (all my friends have Nikons )


it's the mkI k-5 yes, If there is anything that can be done then I am throwing it off the window, it is unacceptable to focus on a person's eye and get a focused nose or an ear half the time....

Hello to you all !

I recently purchased a used k-5 and a FA50mm but I am a little disappointed by the autofocus performance.., I have tried to adjust it from the menu but it seems that some times it front focuses and other times it back focuses even if when I did the adjustment it looked fine.. You see that's the problem, if the deviation was stable I could do something but now what can I do ? Unfortunately I don't have a warranty..


I came from a K10d with a manual 50mm f1.7 with a focusing screen and therefore I have a "trained" eye, I realize that most of the time I do better than the k-5's autofocus. Is it the camera's or the FA50's fault ?


Thank you in advance for any advice