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Forum: Pentax K-1 & K-1 II
05-11-2016, 05:45 PM
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I just put my Sigma EX DG HSM 85mm f/1.4 on the K1.
Then I put my Sigma DG 50-500 f/4.5-6.3 APO HSM on too.
While these lenses appear on the "list" from Sigma, they made no mark and worked - amazingly on the K1.
The lenses might *just* be contacting the K1, but without a mark or scratch, I'm fine with it.
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Forum: Pentax K-1 & K-1 II
05-11-2016, 10:34 AM
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If Sigma has played fast and loose with the spec...then they reap the loss.
Sounds like Sigma might need to make a spec'd lens mount as a warranty replacement.
That might be the easiest fix.
Good to hear all the feedback/data.
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Forum: Pentax K-1 & K-1 II
05-11-2016, 10:31 AM
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Hmmm...If you put it that way, I guess it can be all on Sigma for being just a bit off.
Too bad Pentax came too close with the front of the body.
I'm now 50/50 about this.
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Forum: Pentax K-1 & K-1 II
05-11-2016, 10:22 AM
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This "problem" has been going on for years concerning Pentax digital bodies.
Some lenses I own, have come pretty close to touching the upper part, just above the lens mount, on the front of the camera.
To be honest, with every new Pentax body, I look for this space, and it's very close on a number of lenses.
I hate to say it, but this is a Pentax oversight for not anticipating more clearance just off the lens mount.
Some lenses get immediately "fat" just off the lens mount, and Pentax should have given just a bit more clearance.
Sigma seems to have other problems, but this lens-scratch thing, is definitely a Pentax oversight.
I have a Bigma, and I am happy to know I need to be careful or not mount it if I can't live with a little scratch.
Additionally, the pressure to make that scratch, is probably enough to lift the lens mount so the contacts short out, or the camera freezes.
Thus, we now have the mechanical reason for Sigma lenses to be freaking out when they are attached to a K1.
Once you get the scratch/groove, I'll bet Sigma lenses work just fine.
****See my comments below as I learn more about how Sigma lenses have a wider lens mount****
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