Mirrodie From United States of America, joined Apr 2000, 7421 posts, RR: 65 Posted (5 years 4 months 2 weeks 4 days 23 hours ago) and read 4253 times:
A fwe months ago, I noticed that when I zoom in, then zoom back out, it seemed that there was some resistance to zoom out the lens. it's an on and off phenemonon and hte shots are unaffected.
YEsterday while spotting with a friend, he diagnosed my issue. One of the black internal rings ( I forget the proper name) which can be seen when you look head on at the lens, was loose and falling backwards toward the camera body.
I am wondering if anyone else has experienced this. And hte cost of repair at Canon?
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TimdeGroot From Netherlands, joined Apr 2002, 3674 posts, RR: 67 Reply 1, posted (5 years 4 months 2 weeks 4 days 20 hours ago) and read 4188 times:
Yes I've had this (or a similar) problem. It got so bad I could not move the zoom ring any longer. It was still under warranty so not sure what a repair will cost.
Maiznblu_757 From United States of America, joined Mar 2002, 5112 posts, RR: 52 Reply 4, posted (5 years 4 months 2 weeks 3 days 22 hours ago) and read 4038 times:
Quoting Mirrodie (Thread starter): A fwe months ago, I noticed that when I zoom in, then zoom back out, it seemed that there was some resistance to zoom out the lens. it's an on and off phenemonon and hte shots are unaffected.
YEsterday while spotting with a friend, he diagnosed my issue. One of the black internal rings ( I forget the proper name) which can be seen when you look head on at the lens, was loose and falling backwards toward the camera body.
I am wondering if anyone else has experienced this. And hte cost of repair at Canon?
Yes, I have had the resistance issue with the 100-400mm but mine was caused by the bearings not functioning correctly. I have the Mack Warranty which adds 3 years on to the Canon warranty. Mack was unable to fix it so they sent it to Canon for the repair.
I had a friend that went to Phancon a couple of year ago and his lens got stuck at 400mm, it wouldnt budge. The bearings were the cause again.
Advice, use the opportunity to have Canon check the sharpness of the lens from 300-400mm. A lot of people complain of the lens being soft in that range. Its a peace of mind thing.
Aero145 From Iceland, joined Jan 2005, 3070 posts, RR: 23 Reply 5, posted (5 years 4 months 2 weeks 3 days 18 hours ago) and read 3996 times:
I have a bit of this problem with my 100-400. It's in EU warranty for a few more months now, but I really doubt Canon Iceland will want to fix that (not sure if they've ever had to fix a 100-400 at all ).
I remember "TZ" said something about putting some liquid on the barrel, will be nice to see if he'll reply to this thread.
AA 777 From United States of America, joined May 2002, 803 posts, RR: 14 Reply 7, posted (5 years 4 months 2 weeks 3 days 16 hours ago) and read 3962 times:
Mario,
I had the same problem with mine last year. I drove it down to Canon in NJ...exit 8A I believe on the NJ TPK. They mailed it back to me in a week and it was about 100 bucks I believe!
Mirrodie From United States of America, joined Apr 2000, 7421 posts, RR: 65 Reply 8, posted (5 years 4 months 2 weeks 3 days 13 hours ago) and read 3944 times:
Thanks all, much appreciated, esp. aa777.
Mario
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As to the OP my 100-400 had the same problem. The plastic ring inside the front element came loose, preventing it from zooming. It was fixed under warranty.
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Sulman From United Kingdom, joined Mar 2004, 2028 posts, RR: 35 Reply 10, posted (5 years 4 months 2 weeks 3 days 7 hours ago) and read 3912 times:
I remember Peter Fagerstrom saying he had a single grain of sand in his that caused his 100-400 to lock solid. EGHI local Justin Wood has his 100-400 fail in the same way the thread author described; I believe Canon fixed it under warranty.
TZ's trick was a rag with WD40 on it applied gently around the telescopic part of the barrel, If I recall correctly.
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