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04-10-2012, 05:43 PM   #1

Zoom lens for K10d

Hi - I bought my husband a sigma 18-250mm DC Os lens for our older Pentax Kd10. Can anyone tell me if the autofocus feature works when using this lens If not what zoom would be compatible with this camera.

04-10-2012, 06:03 PM   #2
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If you bought the PEntax mount version of that lens then yes the AF will work.
04-10-2012, 06:17 PM   #3

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According to specifications found in the internet, this lens has SDM autofocus only. The K-10D originally did not support SDM, but this was not caused by hardware. After Pentax itself sold such lenses, they offered a firmware update for the K-10D (V1.30). With this, the lens should work alright. However, I own neither a K-10D nor that Sigma lens, so better wait for more comments.

Reference for the lens specs (SDM only):
Reference for the K-10D (V1.30): The camera database of this forum
04-10-2012, 06:25 PM   #4
twitch's Avatar

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Oops, yes that's correct, firmware 1.3 is needed to focus SDM style lenses on a K10D.

04-15-2012, 02:43 AM   #5

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Here you go Latest K10D Firmware Update : Software Downloads : PENTAX

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