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Pentax smc DA* 50-135mm SDM Issue

Started Dec 21, 2013 | Discussions thread
Suwandi Chandra Photography
Suwandi Chandra Photography Regular Member • Posts: 121
Re: Pentax smc DA* 50-135mm SDM Issue

c57d wrote:

Do a Google search on: "How to deactivate SDM and allow for screw drive autofocus"

The first hit should be on the Pentax Forums page.

It tells how to use an older camera to read the lens firmware, make a change and write it back to the lens so that it always uses screw drive. I did it to my 50-135 and now I have a working lens again without having to send it in for a repair that may fail again down the road.

Have to strongly agree with Chris on this one. I deactivated 2 of my SDM lenses (DA* 16-50 and DA* 50-135). Pair it with K-3 and I never looked back on SDM anymore. I think screw drive focusing is faster with K-3 now compare to my old K-7 and K10D.

Cheers

Suwandi Chandra Photography

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