New Sigma 70-300 with autofocus issue
898 posts
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Posted 17/08/2013 - 00:56
If it's new, yes, I'd recommend a replacement from where you bought it from.
Twitter | Someone said time-lapse?
Pentax K5 | Samsung N9005 | DA 18-55 WR | DA 35 2.4 | DA 50 1.8
Tamron 10-24 SP | Tamron 90 2.8 Macro | Tamron 70-300 Macro
Samyang 85 1.4 ...and a few other manual lenses older than me.
Twitter | Someone said time-lapse?
Pentax K5 | Samsung N9005 | DA 18-55 WR | DA 35 2.4 | DA 50 1.8
Tamron 10-24 SP | Tamron 90 2.8 Macro | Tamron 70-300 Macro
Samyang 85 1.4 ...and a few other manual lenses older than me.
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Posted 17/08/2013 - 08:21
tried cleaning the camera and lens contacts?
60 posts
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Posted 17/08/2013 - 09:00
Yes I did to be sure that's not causing the issue. Assuming it would have been ok anyway as the lens is brand new (just out the box) and the camera is only 7 weeks old and works perfectly with Pentax lenses.
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Posted 17/08/2013 - 11:18
Try turning the aperture ring if it has one - my old version of this lens sometimes plays up and that is needed is a quick turn on the aperture ring then return it to the 'A' setting then all is ok 
However, as it is a new lens it would be sensible to send it back for repair or replacement
K10D, K5 plus plenty of clueless enthusiasm.
My Flickr site link
However, as it is a new lens it would be sensible to send it back for repair or replacement
K10D, K5 plus plenty of clueless enthusiasm.
My Flickr site link
Last Edited by Stuey on 17/08/2013 - 11:18
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K30pete
Member
Stirlingshire
When I put a new Sigma 70-300mm F4-5.6 APO DG macro lens on my K30 it's asking for the focal length, I can use the lens manually but autofocus doesn't work. I was wondering if it's a faulty lens so the camera is not detecting it as a AF lens?
Any help would be appreciated.
Pete