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05-04-2011, 03:42 AM   #1
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Victor Libon's Avatar

Join Date: Apr 2011
Location: Charleroi (Belgium)
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Autofocus with ist-DL and DA 18-135 ED AL


I took pictures with ist-DL recent years.

I recently purchased a K-5 with a DA 18-135 ED AL.

I prefer to use prime lenses, and I reserve the 18-135 for the "Tourism ".

I had the idea to put the 18-135 on the ist-DL for use as a "notepad". Unfortunately, the autofocus does not work with the 18-135 on this camera, and manual focus is very tricky with this lens.

Is there a solution to operate with autofocus on the ist-DL with my 18-135 (firmware or otherwise)?

05-04-2011, 04:10 AM   #2
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Location: Sydney, Australia
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I'm fairly certain the ist-DL (and other ist models) don't have the electrical contact for the DC autofocus motor in the DA 18-135. Also, the lens does not have a screwdrive for the old-fashioned autofocus.

So, you're stuck with manual focusing.
05-04-2011, 07:53 AM   #3
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Yep, if you need the AF, you could upgrade on the cheap by selling the DL and getting at k100d Super (the non-super version won't AF the lens, doesn't have the contacts) - you can sell the DL and it'll only cost likely around $100 or so (k100d Super should only be around or under $250) - you'll get the same sensor (if that is important) but add shake reduction and the needed electrical contacts. A used K10d or K200d for around $300-350 would also be relatively cheap, and jump upto the 10mp sensor.
05-05-2011, 01:14 AM   #4
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Join Date: Apr 2011
Location: Charleroi (Belgium)
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Original Poster

A big thank you to Vylen and pxpaulx for your reply.

First I realized it was missing two contacts on the ist-DL for the 18-135 autofocus. Second, the K100D Super is the first model to have these contacts. Both are useful information.

I have to think about it quietly.

Thank you again.


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