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FORUMS Canon Cameras, Lenses & Accessories Canon EF and EF-S Lenses 
Thread started 29 Jun 2011 (Wednesday) 22:12
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Anyone tried to replace the plastic mount of a lens with a metal mount from another?

 
pkim1230
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Jun 29, 2011 22:12 |  #1

Anyone? How difficult is this task?
I'm assuming there must be some kind of tutorial for replacing the mount in case it broke.



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phreeky
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Jun 29, 2011 22:34 |  #2

If the plastic and metal parts are basically from the same mold then it's just a few screws I believe. But on a plastic mount lens you'll probably be screwing into plastic anyway, so I don't see the point.




  
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pkim1230
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Jun 29, 2011 22:43 |  #3

phreeky wrote in post #12680610 (external link)
If the plastic and metal parts are basically from the same mold then it's just a few screws I believe. But on a plastic mount lens you'll probably be screwing into plastic anyway, so I don't see the point.

The parts that usually break in a plastic mount is the three plastic pieces on the mount itself. So I think it will be still helpful if those three parts were metal.

If the metal mount transfers the force of impact towards the lens after replacing it with the metal mount, then that's another story.

So you're saying it is easy to replace just by replacing the four screws that hold the mount onto the lens? No wiring to be worried about?



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phreeky
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Jun 29, 2011 22:50 |  #4

I've never swapped them, but have taken lenses apart to clean/fix and put back together. On those lenses I recall the little section with the electronic contacts pushed/pressed into the mount section and I vaguely recall a very small screw or two going in sideways from the mount section into that section with the electronic contacts.




  
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K6AZ
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Jun 29, 2011 22:52 |  #5

Which lens do you have in mind?

If a lens has a plastic mount the rest of it would be suspect as well IMO. I can't think of any plastic mount lens that I would go to this trouble for.


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Josh13
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Jun 29, 2011 23:02 |  #6

Are there any metal efs mount lenses? That might be an issue. I don't think this is an option My plastic mount 35-80 does on have one screw in common with any other lens I have. The opening in the center of the lens for the glass is different size from lens to lens too.


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DreDaze
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Jun 29, 2011 23:33 |  #7

Josh13 wrote in post #12680714 (external link)
Are there any metal efs mount lenses? That might be an issue. I don't think this is an option My plastic mount 35-80 does on have one screw in common with any other lens I have. The opening in the center of the lens for the glass is different size from lens to lens too.

at least the 17-55IS, 15-85IS, and 10-22 have metal mounts

K6AZ wrote in post #12680675 (external link)
I can't think of any plastic mount lens that I would go to this trouble for.

i agree...what's the point


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pkim1230
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Jun 29, 2011 23:41 |  #8

K6AZ wrote in post #12680675 (external link)
Which lens do you have in mind?

If a lens has a plastic mount the rest of it would be suspect as well IMO. I can't think of any plastic mount lens that I would go to this trouble for.

DreDaze wrote in post #12680831 (external link)
at least the 17-55IS, 15-85IS, and 10-22 have metal mounts


i agree...what's the point

It saves me money! But I'm not going to do it.



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DreDaze
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Jun 29, 2011 23:46 |  #9

pkim1230 wrote in post #12680865 (external link)
It saves me money! But I'm not going to do it.

how does spending money on something unnecessary save you money?...if anything i think it'd cost you money...buy the mount...possibly mess up the lens...


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pkim1230
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Jun 29, 2011 23:59 |  #10

DreDaze wrote in post #12680884 (external link)
how does spending money on something unnecessary save you money?...if anything i think it'd cost you money...buy the mount...possibly mess up the lens...

I have a box of junk.



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macroimage
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Jun 30, 2011 00:33 |  #11

The mount thickness is also critical. This varies from lens to lens. Too thick acts like an extension tube and prevents infinity focus, especially at shorter focal lengths. This is one reason it isn't practical to swap mounts between lenses.


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rx7speed
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Jun 30, 2011 02:04 |  #12

I give you credit for trying to be creative but I'm not sure I see the reason though other then trying something new. I have yet to really hear of much for failure happening with lens mounts and that is even with some abusive situations. I have on the other hand see the mount pull away from the body or broken lens bodies both of which a metal mount wouldn't solve.


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Anyone tried to replace the plastic mount of a lens with a metal mount from another?
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