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Old Nov 3, 2010, 12:53 PM   #1
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Default D7000 does not power on w/ Sigma 24-70 2.8

I just got a D7000. Everything seems to work great, except the Sigma 24-70 2.8. When I attach the lens, the camera does not power up at all. If I remove the lens, or put on a different lens, the camera works as it should. I tested the Sigma lens on my D50, and it works fine.

Any ideas? I will test the rest of my lenses.
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Old Nov 3, 2010, 1:09 PM   #2
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Does anything untoward occur if the camera is on when you attach the Sigma 24-70/2.8?

I'd check with Sigma about it, in any event.
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Old Nov 4, 2010, 12:59 PM   #3
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TCAV,
I tried what you suggested. When I attach the lens with the camera turned on, I get an f-- error. When I turn the camera off, it will not turn back on.
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Old Nov 4, 2010, 1:15 PM   #4
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call sigma, it may not be compatible with the new camera. this has happened before when new cameras are released. often they need to be rechipped. they may or may not be aware of the problem with the d7000 being so new.
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Old Nov 4, 2010, 1:55 PM   #5
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JOOC, does the Sigma have an aperture ring? ... and is it set and locked to the smallest aperture?
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Old Nov 4, 2010, 8:21 PM   #6
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I had contacted Sigma right away. They said they would look into it. The lens does have an aperture ring. That was one of the first things I checked when I saw the f-- error. If the lens needs a new chip, is it covered under a warranty?
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Old Nov 5, 2010, 5:38 AM   #7
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Sigma has a history of fixing those things after the conventional warranty has expires, but you should check with them of course.
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Old Nov 5, 2010, 10:57 PM   #8
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They asked me to send it back. I just replied to them, and asked if the repair is a covered expense. She said, " The engineer at the coprate office suggested sending the in for a fireware upgrade. They are still working on testing the compatibility of thelenses with live view, but the powering on they can work on a fix for."
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Old Nov 18, 2010, 4:49 PM   #9
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Default I am experiencing exactly the same problem

My new D7000 is quite happy with all my nikon lenses, with a Sigma 75-300 (APO Macro), and with a Tokina 828 AT-X Pro (80-200 f/2.8).

It won't switch on with my 24-70 f/2.8.

I will also contact Sigma (in the UK) and see what the skinny is.

Did they give you any kind of useful case number?
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Old Nov 21, 2010, 1:39 PM   #10
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I just finished dumping all my Sigma stuff.28mm macro,105mm macro,150-500 and 2x convertor.They have the rudest phone people I have ever dealt with. I am replacing it all with Nikon and the quality and workmanship is a lot better.Just my dealings with Sigma.
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