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Lens creep?
Old 02-22-2007, 12:07 AM   #1 (permalink)
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I just picked up a Sigma 24-135 lens recently. Yesterday, while attempting to take a still life (camera pointed straight at ground) the lens began to "creep"-- like it was zooming out on its own. I figured it was gravity, but I can't think that maybe something is wrong. Is this normal? I did some searching on google-- and some folks say yes, others no. Just trying to figure it before I resort to shipping it off.

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Re: Lens creep?
Old 02-22-2007, 12:32 AM   #2 (permalink)
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This is a very common phenomenon. In fact some lens even have a special switch to lock the lens in position. There is a fine balance in zoom lens design for the push pull type zooms. If you make it too loose then every time you tilt the lens up or down it can creep. If you make it too tight, then it is harder to zoom. You have to do it just right. I've found that even with the same lens, you'll find some that creep more than others. So it might be something that can be addressed by Sigma's tech department.
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Re: Lens creep?
Old 02-22-2007, 09:33 AM   #3 (permalink)
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I had a Nikon 24-120 lens that started to "creep" after four years of use. I took it to the camera store where I bought it and they said it was a loose cam ... and that a good zoom lens should NOT creep. They sent it back to Nikon and Nikon fixed it for free (thanks to my 5 year Nikon warranty). On a related note - a friend of mine bought a new Nikon 18-200 lens and it started to creep during the first month. She took it back to the camera store and they replaced it.

I shoot a lot of jewelry and can't imagine trying to do macro photography with a creepy lens!
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Re: Lens creep?
Old 02-22-2007, 01:07 PM   #4 (permalink)
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Lens Creep...is that the same as GWC Sorry, I couldn't resist.

To your question, none of my zooms have any lens creep. A well made lens should not have that problem and if you get a sample that does, the manufacturer should stand behind it as others have posted in their experiences.
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Re: Lens creep?
Old 02-22-2007, 07:46 PM   #5 (permalink)
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Thanks for the help on this. I contacted Sigma and they agree it was not normal for a new lens. I can't imagine trying to live with the problem as some people do. In fact, someone on another photo board said they use a rubberband hooked around the flash mount and the lens shield... yikes.
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