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08-02-2012, 08:32 PM   #1
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Sigma 75-300mm Stuck

Hello All,

I recently picked up a couple lenses in a lot on eBay. One of them is a Sigma DL Zoom 75-300mm 1:4-5.6. It initially worked but now will not zoom in or out and is just stuck. I read a review on the forum that complained of "sticky paint" on this lens. Does anyone have any thoughts on how I can get it working again?

Thanks

08-02-2012, 10:00 PM   #2
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Not familiar with that lens but some of those 'macro' zooms have a macro position that you turn the lens into, when in that setting it will not zoom. Not sure if that is your issue but might be worth a look.

Good luck!
08-02-2012, 10:19 PM   #3
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From the faq on Sigma Japan:
How should I use the Macro Switch of 28-80/3.5-5.6 Mini Zoom Macro, 70-300/4-5.6 and Apo Macro Super and 70-300/4-5.6 DL Macro Super?


First, set the zoom control to its maximum telephoto position. Then, slide the Macro Switch to the "Macro" position. Now the focus ring can turn from infinity to macro range. (The macro switch cannot be changed to the "Macro" position if the zoom ring is set to other than the maximum telephoto setting.) If While the Macro Switch is set to the "Macro" position, the zoom ring is locked in the maximum telephoto setting and zooming is not possible. To avoid damage to the lens, please do not force the zoom ring to turn. To return the normal mode, please then turn the focusing ring out of the macro range. Then slide the Macro Switch to the "Normal" position. If the focus ring is in the macro range, the switch will not move.
08-03-2012, 03:46 AM   #4
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Original Poster
Thanks for the suggestion, I tried looking for a macro switch but the lens doesn't seem to have one that I can find (at least something marked macro/normal). When I turn the focus ring I've noted a macro range there. Right now I can turn the focus ring freely, however the zoom is stuck in it's shortest setting. Am I missing something (which is very likely) ? Thanks again for the help.

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