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05-08-2016, 08:32 AM   #1
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Anyone Try the SIGMA 24-70mm. f/2.8 IF EX DG HSM with the K-1?

Looking at this lens as a potential option, just curious on if anyone can report on it with the K-1. Thanks

05-08-2016, 08:45 AM   #2
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Sorry about this, since I've not tried that one, and really should not post here, but since I do own the FA*28-70 F2.8 and the tokina 28-70 F2.6-2.8 I just wanted to inform you that they are both awesome, on the K-1! Especially the tokina is impressive since it focuses liggtning-quick for a screwdrive!
05-08-2016, 08:57 AM - 1 Like   #3
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Yes, and it works fine.
05-08-2016, 10:17 AM   #4
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There are conflicting reports regarding this lens including one thread specific to the Sigma 24-70/2.8 EX DG HSM where the owner reports a complete camera freeze with the K-1.

https://www.pentaxforums.com/forums/172-pentax-k-3/320369-k1-freezes-sigma-24-70-ex-dg-hsm.html

Other owners (e.g. @VoiceOfReason, above) have reported no problems. IIRC, there are other reported problems with this lens (will not focus in LV on some APS-C bodies). If it were me, I would hold off on purchase until the dust settles and it is clear why there are problems and what remedies Sigma might offer.


Steve

05-09-2016, 12:08 PM   #5
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Mine also works just fine. Live view and viewfinder both fully functional.
05-09-2016, 03:32 PM   #6
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My Sigma lenses quick check with K-1:

Sigma 24-70/2.8 EX DG HSM .... It works fine both live view and viewfinder - If your crop setting is in AUTO, K-1 thinks this lens is CROP, ... Change your crop setting to FF and it works fine.
Sigma 70-200/2.8 APO EX DG OS HSM .... It works fine both live view and viewfinder - If your crop setting is in AUTO, K-1 thinks this lens is CROP, ... Change your crop setting to FF and it works fine.
Sigma 12-24 4.5 EX DG .... it works fine in both Live view and viewfinder
Sigma 15 2.8 DG Fisheye 180 degrees .... it works fine in both Live view and viewfinder

I hope it helps
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