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|| SportsShooter.com: Member Message Board
Replacing damage rear mount on lens
Derick Hingle, Photographer
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Hammond | LA | USA | Posted: 4:29 PM on 06.25.09 |
| ->> I was curious if anyone has ever had to get the rear mount on a 400mm lens replaced. The mount is damaged and will not connect to a camera. I would like to know if anyone knows how much a repair like that might cost? I am not a member of CPS the lens is one I am looking to aquire from someone if the cost of repair is not too expensive. |
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Duane Burleson, Photographer
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Sterling Heights | MI | USA | Posted: 5:06 PM on 06.25.09 |
->> Derick,
"will not connect to the camera", does this mean it will not mount to the camera, or when mounted you get no functionality? The replacement of a mount itself on the original and Version II is not very expensive and easy to do. I don't know about the IS version but it is probably just as easy. I used to carry a spare for my 400mm. The mount itself is about $30.
Cheers,
Duane |
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Patrick Fallon, Student/Intern, Photographer
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Columbia | MO | USA | Posted: 5:11 PM on 06.25.09 |
| ->> Call Midstate Camera Repair, they can either get you the part or repair it for you |
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Michael Fischer, Photographer
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Spencer | Ia | USA | Posted: 5:35 PM on 06.25.09 |
| ->> I just replaced a mount on my Nikon 400mm f2.8. I had my guy do it instead of NPS. Cost about $165 to replace the mount, and about $130 to ship it both ways insured. |
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Derick Hingle, Photographer
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Hammond | LA | USA | Posted: 8:39 PM on 06.25.09 |
| ->> The mount is bent out of shape, so the lens won't actually connect at all, it is not an IS version. I will check with Midstate Camera Repair about a quote, Canon told me they could not estimate repair cost without me sending the lens in, so I will try some of options recommended by you guys. I definitely appreciate the suggestions, if anyone has other suggestions of camera repair shops, please share, I have never had to send in equipment to anyone before. |
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Eric Canha, Photographer
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Brockton | MA | United States | Posted: 9:05 PM on 06.25.09 |
->> Derick I'm sure that you've considered this but I'm going to say it anyway. If the mount is that damaged, the cost of repairing the mount may be the smallest part of the bill. You have to consider that the optics could be misaligned, things like the springs and control levers that actuate the aperture blades and even the gates and FCB connectors could have all suffered as a result of the event that bent the mount.
Just replacing the mount without checking the rest of the lens could put you in a position were you physically mount the lens to a body only to find out that the lens has an electronic failure and can kill the body.
I had a 28-70 that killed two bodies because it was drawing too much current from the body.
You will be much better served sending the lens to a shop that can checkout the lens as a whole. |
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Derick Hingle, Photographer
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Hammond | LA | USA | Posted: 9:58 PM on 06.25.09 |
->> Eric,
Thanks for that info Eric, I certainly do plan to send it in to be repaired so I will have the lens checked for any other issues before connecting the lens to a camera. But I did not know a electronic failure of the lens could kill the camera body, I figured the lens just would not work, thanks for the info. |
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George Bridges, Photographer, Photo Editor
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Washington | DC | USA | Posted: 10:32 PM on 06.25.09 |
| ->> I would be cautious of buying a damaged lens. If the mount is that bent then as Eric said there is probably more damage and you quickly get diminishing returns of your "bargain" as the repair bill mounts. |
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William Maner, Photographer
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Biloxi | MS | USA | Posted: 11:04 PM on 06.25.09 |
->> Derick..
There's a site where you can get parts listings for various Canon cameras.. The mount itself looks pretty simple.. I'm linking the site.. It's in PDF form, but you'll probably have to load the Japanese fonts file to see the 11 page document in its entire form.
The part is #CY1-2560-000 on page four..
To repeat what George Bridges said... You need to have the lens professional checked.. If one of the mounting flanges is bent inward, not allowing the lens to mount, it's possible that the lens axis may be slightly off center--instead of the image focusing at the designed point, the image may tilted slightly off axis..
Here's the link to the exploded parts schematic and the parts list:
http://www.f20c.com/stuff/canon/partslist/EF%20400%202.8%20L%20USM.PDF |
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Derick Hingle, Photographer
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Hammond | LA | USA | Posted: 7:44 PM on 06.27.09 |
| ->> Thanks, the lens will be looked at by a professional I was just getting some guidance from you guys instead of going into a possible repair job blind to what it may cost. Thanks for the help everyone! |
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