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FORUMS Canon Cameras, Lenses & Accessories Canon EF and EF-S Lenses 
Thread started 30 Aug 2010 (Monday) 14:18
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500mm filter question

 
capt ­ don
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Aug 30, 2010 14:18 |  #1

More help needed guys. The 500mm that I bought from a guy has a circular polarizing filter in it and I want to remove it. I pulled the filter assembly from the slot and can't figure out how to get the filter out of the assembly. It appears to be factory installed in the gizmo. Thanks




  
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popeshawnpaul
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Aug 30, 2010 15:05 |  #2

He didn't give you one with just clear glass?


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malla1962
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Aug 30, 2010 15:30 |  #3

capt don wrote in post #10817676 (external link)
More help needed guys. The 500mm that I bought from a guy has a circular polarizing filter in it and I want to remove it. I pulled the filter assembly from the slot and can't figure out how to get the filter out of the assembly. It appears to be factory installed in the gizmo. Thanks

Its a fixed unit and wont come out, he must still have the original.


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KennyG
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Aug 30, 2010 16:34 |  #4

The optics are designed to have the clear glass in the filter slot, so it is absolutely essential.


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FlyingPhotog
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Aug 30, 2010 16:38 |  #5

There is a clear-glass version that can sandwich gel material (comes with the lens), a version that takes 52mm threaded filters (for ND or colors) and the CPL version. The last two are aftermarket accessories.

And yes, the lens needs to have one installed...


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capt ­ don
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Aug 30, 2010 20:21 |  #6

Untill I get some kind of replacement, can I just tape a piece of thin plastic with black electric tape, so light doesnt come in over the slot and use the lens that way, with nothing in the slot.




  
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TooManyShots
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Aug 31, 2010 11:34 |  #7
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capt don wrote in post #10819692 (external link)
Untill I get some kind of replacement, can I just tape a piece of thin plastic with black electric tape, so light doesnt come in over the slot and use the lens that way, with nothing in the slot.


I see no reasons why you can't do that...


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sandpiper
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Aug 31, 2010 12:54 |  #8

TooManyShots wrote in post #10823325 (external link)
I see no reasons why you can't do that...

Well, the OP can do that of course, but the lens is unlikely to perform at it's best.

The filter is designed as part of the optics, not having one installed will affect the IQ, don't know by how much as I have never tried it, but effectively you are removing one of the lens elements, so don't expect things to look perfect.




  
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500mm filter question
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