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06/18/2007 09:16:53 PM · #1 |
Today my 70-210 lens decided to start throwing Err 99 at me. At least, I hope it's the lens. I've gone through all of the cleaning and troubleshooting to no avail.
It errors out (audibly) when the lens is zoomed over ~120mm in bright light. I can't get any of my other lenses to throw the error, but they're all short. Between 18-55.
Tomorrow I'm taking the body to the local pro photo place where I'm going to buy my new lens (28-135 IS) and try out a couple longer-focal length lenses to see if I can reproduce the problem on anything other than my lens. I hope I can't. I hope it's just the lens. |
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06/18/2007 09:19:14 PM · #2 |
I find thats an interesting lens size i just got a used 70-210 Sigma for Pentax K mount.
I wonder what fueled the whole 210 thing. |
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06/18/2007 10:09:26 PM · #3 |
Originally posted by RainMotorsports:
I find thats an interesting lens size i just got a used 70-210 Sigma for Pentax K mount.
I wonder what fueled the whole 210 thing. |
70x3=210... Common wisdom says "3X zoom is max you can do without quality issues".
R.
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06/18/2007 11:06:57 PM · #4 |
Originally posted by Bear_Music:
Originally posted by RainMotorsports:
I find thats an interesting lens size i just got a used 70-210 Sigma for Pentax K mount.
I wonder what fueled the whole 210 thing. |
70x3=210... Common wisdom says "3X zoom is max you can do without quality issues".
R. |
how did you know that?
you really are just a wealth of knowedge, I'm so glad your around! |
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06/18/2007 11:40:37 PM · #5 |
(most likely) it is the lens
and the problem is in the lens F stops electric circuit
try using the lens in av mood and make sure that the F stop is as open as possible f2.8 or f3.5. the lens should work fine.
now try to take the same shot with closing the f stop to f4 or f5.6 and the camera will give the error 99
if thats the case the lens needs fixing. |
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06/19/2007 12:48:11 PM · #6 |
Pro Photo guy validated what I (and Oded) had already assumed. The aperture is bad on that lens - it's sticking randomly. I'm not sure whether it's electronic or mechanical, but for now the lens is officially pulled from my bag.
It's probably not worth having repaired. |
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