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09-04-2008, 03:46 PM   #1
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sigma 100-300mm + k200d problems

I just bought a used Sigma 100-300mm f4 & I'm having trouble using it on my k200d. Everytime I mount the lens, nothing happens except that the LCD blinks "f--". It can blink indefinitely. If I wiggle the aperture ring & the lens around in the mount, the lens is recognized in <10 seconds. Ive cleaned the contacts many times. Id appreciate any ideas people might have about what I could do before sending it in for repair.

09-04-2008, 04:14 PM   #2
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I'm sure you checked, but make sure the aperture ring is set to A. If the lense doesn't have an A setting, you'll need to enable use of the aperture ring in one of the menu settings.
09-04-2008, 05:23 PM   #3
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^^^^^ What he said. If there is no "A" setting on the aperture ring, you need to go to the "custom" menu and look for "using aperture ring" set it to "enabled" or "permitted" and you're good to go. Set the camera to "M" mode, set your aperture on the lens, then hit the green button to stop down and meter, then take your shot !!
09-04-2008, 05:28 PM   #4
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Thanks for replies. I forgot to mention that I've tried the aperture ring on many settings when powering on, including A. And the problems are still as described above.


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