PM replied

Damn... If i could as much as i could not i would definitely snap it from your hands. Unless you would like to swap.

New Year bump. Open to reasonable offers.

Than thats the problem with your lens. i know you are busy with your house renovation but try to put the lens on the camera and turn it on everyday and just focus on something, dont need to make any photo just exercise the focus and you should be fine.
If it wont focus the just refocus manually from infinite to closes distance few time and then try to focus wit AF.
Should help.

As David has mentioned. If you don't use the lenses regularly they just stop to focus and need a time(and "exercise" to wake up.
Because they are professional lenses manufacturers are expecting that they will be used every day and if they are not used on a daily basis they will just fell in sleep.
I have read somewhere that lenses with newer sdm motor don't have this problems but cant find it now.

Used to have the same problem with DA*16-50 and sold it here on this forum but the buyer knew about it and after some time he has told me that the lens is still got the same issue, still works but needs to be woke up from the "winter" sleep.

Anyway you cam make the lens to work as a standard DA lenses (screw focusing instead of SDM) if the SDM fails completely.

Here is the topic where i am selling the DA*16-50 with the SDM issue
https://www.pentaxuser.com/forum/topic/fs--da-16-50--da-50-135-44375

£250 including including postage within EU.
Pictures as promised
Flash is making the lens to look worst as it actually looks.

Hi
This is an very reluctant sale but need money to go somewhere else so it has to go.
Lens is in excellent condition with very little marks of use on it. Glass is nice and clean, aperture works as you would expect with no oil on them. Lens is boxed with all the paperworks and lens case.

Looking for £250 ono plus postage

Will accept Paypal (friend or family) or bank transfer (to mi UK account)

Lens is located in Slovakia but will post it insured and tracked

Any questions just ask
Pictures to follow

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