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05-11-2016, 08:40 PM   #151
ogl
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QuoteOriginally posted by stevebrot Quote
Probably not related to the issues discussed on this thread since Sigma is offering a firmware fix to the users who have inquired.


Steve
It's mechanical mistake in K-mount's dimensions of Sigma. It couldn't be fixed by firmware


05-11-2016, 08:50 PM   #152
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QuoteOriginally posted by ogl Quote
It's mechanical mistake in K-mount's dimensions of Sigma. It couldn't be fixed by firmware
Perhaps you would like to read back through this thread to see what it is about.

Before you start, you may be interested in knowing that there are at least two issues with Sigma lenses on the K-1. The photo you supplied relates to the mount clearance issue from today's Sigma press release, but that is not what this thread is about.


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05-11-2016, 08:57 PM   #153
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@ogl, You might find this related thread interesting too...

https://www.pentaxforums.com/forums/190-pentax-k-1/320369-k1-freezes-sigma-24-70-ex-dg-hsm.html


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05-11-2016, 09:06 PM   #154
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QuoteOriginally posted by stevebrot Quote
Perhaps you would like to read back through this thread to see what it is about.

Before you start, you may be interested in knowing that there are at least two issues with Sigma lenses on the K-1. The photo you supplied relates to the mount clearance issue from today's Sigma press release, but that is not what this thread is about.


Steve
3rd-party lens compatibility is included such problems too IMO

compatibility is rather deep conception
If you don't like it, I have no plan to write here anymore

05-11-2016, 09:33 PM   #155
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QuoteOriginally posted by ogl Quote
3rd-party lens compatibility is included such problems too IMO

compatibility is rather deep conception
If you don't like it, I have no plan to write here anymore
I guess I misunderstood your intent. I re-read your posts here and think you are saying that, based on the thread title, it would be good share the existence of another thread where a physical incompatibility problem (newly announced by Sigma) is being discussed.

There is an outside chance that the two are related for at least some users and so it may be a good idea.


Steve
05-13-2016, 01:28 AM   #156
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QuoteOriginally posted by clackers Quote
Shouldn't have been, theEight.

That's what the Di II means for a Tamron lens - APS-C.

Sigma's code is DC.
Thanks. Rest assured I will be paying more attention to those codes going forward.
05-13-2016, 01:56 AM   #157
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Anyone tried the Sigma 1.4/35 Art on the K-1?
05-13-2016, 02:10 AM   #158
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QuoteOriginally posted by HopelessTogger Quote
Anyone tried the Sigma 1.4/35 Art on the K-1?
Yep, it's fine. Didn't seem to smash into the body, either, even though it's on Sigma's list.



05-13-2016, 01:04 PM   #159
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QuoteOriginally posted by volosong Quote
I have the original versions, pre-DG, both the 70-200/2.8 and 100-300/4 and the matching EX 1.4x and EX 2x tele-converters. All work well on the K-1. The auto-focus speed on the 70-200 was very surprising, (very, very fast). Auto-focus speed on the 100-300 was "normal".
Hallelujah! Had to go thru all the msgs to get this confirmation. The only SIgma 70-200/2.8 version & matching adapters that I have retained.Owned every subsequent version other than the OS & got rid of them. Thanks!
06-27-2016, 08:33 AM - 4 Likes   #160
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A final update.

About a week ago I've sent my 70-200/2.8 DG APO HSM II Macro to Sigma, expecting a reply with a cost estimate for repair (I had requested both firmware update and bayonet fix).

Today I've got the lens back. No cost estimate - they've done it for free. With a lens about six years old, out of any warranty and out of production.

And so I now have a working 70-200/2.8 for my K-1.

Great service. Thanks to Sigma!
06-28-2016, 01:59 AM   #161
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QuoteOriginally posted by funktionsfrei Quote
Today I've got the lens back. No cost estimate - they've done it for free. With a lens about six years old, out of any warranty and out of production.
Great to hear the problem could be fixed, thanks for sharing.

So much for the "risks" one accepts when "buying third-party equipment".
06-28-2016, 02:35 AM   #162
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QuoteOriginally posted by funktionsfrei Quote
they've done it for free
Is your username on Pentax forum somehow correlated with that price?

Anyway great news, thank you.
07-11-2016, 02:39 PM   #163
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I contacted Sigma Benelux and asked them about this HSM II version's compatibility. If it's a firmware issue, which I think it is reading through these pages, they will update for free. Mine does not focus in live-view on the K-3 II. I haven't tried it on the K-1 and will not until the mount flange has been modified.

The mount flanges for modification are on order according to Sigma, and will arrive end of July. I guess I will be bringing my 70-200 there soon, their Benelux hq is about 20km from here. Great service for an old lens. I still have the FA* 80-200 to use in the mean time. Will be interesting to compare them once the Sigma is updated.
08-19-2016, 01:48 PM - 1 Like   #164
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Picked up my Sigma 70-200 HSM-II today. New firmware and new mount flange. All free of charge. This on a lens I bought second-hand myself, wonderful service by Sigma.

Tried it out on my K-1 today, working great!
08-22-2016, 10:49 AM   #165
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QuoteOriginally posted by Borrelli Quote
Picked up my Sigma 70-200 HSM-II today. New firmware and new mount flange. All free of charge. This on a lens I bought second-hand myself, wonderful service by Sigma.

Tried it out on my K-1 today, working great!


Well.. this is perfect service!
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