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FORUMS Canon Cameras, Lenses & Accessories Canon EF and EF-S Lenses 
Thread started 04 Oct 2010 (Monday) 22:44
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Focus problems

 
CountryBoy
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Oct 04, 2010 22:44 |  #1

I hadn't used my 50-150mm 2.8 since the first of the year . At that time , it was working fine . But I took it out the other day and now it seems to be off . It seems to be front and back focusing, Other times , I can't tell what the heck it's doing ! In other words , it's all over the place .

I think the warranty runs out this month , I'll have to check . Tomorrow I'll mount it on a tripod and check it out more . I'll also clean the contacts

But I can't figure out how a lens can go from working great to this . Surely lack of use is not the cause. Any thoughts ?


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JackProton
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Oct 05, 2010 00:41 |  #2

Have that problem too. On a 7D after micro focus adjust, it looks like certain focal lengths just won't focus properly but some do. Sigma gave me the bum's rush on the whole issue.




  
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yogestee
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Oct 05, 2010 02:54 as a reply to  @ JackProton's post |  #3

Still using the same camera??


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CountryBoy
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Oct 05, 2010 11:49 |  #4

yogestee wrote in post #11036403 (external link)
Still using the same camera??

Yes same body, my 30D.


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CountryBoy
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Oct 05, 2010 18:44 |  #5

Wasn't really happy with the results mounted on the tripod today , either. Not what I'm use to , from this lens.


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CountryBoy
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Oct 06, 2010 22:36 |  #6

Now it's back to normal . I still don't know what caused the problem . I guess i'll keep using it and see what happens.


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JackProton
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Oct 07, 2010 08:01 |  #7

CountryBoy wrote in post #11049337 (external link)
Now it's back to normal . I still don't know what caused the problem . I guess i'll keep using it and see what happens.

Can I send you mine so you can apply your healing powers to it?




  
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CountryBoy
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Oct 07, 2010 12:47 |  #8

JackProton wrote in post #11051152 (external link)
Can I send you mine so you can apply your healing powers to it?

Sure :lol: . If I only knew what I did :confused:.


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Focus problems
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