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Thread started 25 Apr 2009 (Saturday) 23:48
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Old lens

 
PKSmith
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Apr 25, 2009 23:48 |  #1

I've acquired a Canon FL mount 135mm f/2.5 in great shape from ebay. The only flaw is a bunch of dust or fungus in the gap that the aperture is in. I was wondering if anyone had any experience with lenses this old, or if you could point me in the right direction. I've already made a post in the maintenance and repair section of the manual focus forums, but I figured I'd try here as well.


| Rebel XSi | EF-s 18-55 f/3.5-5.6 IS | EF 50 f/1.4 | EF 70-200 f/4L | Speedlight 199A |

  
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gasrocks
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Apr 27, 2009 08:38 |  #2

What do you want to do with it? It isn't very special, not worth much work IMO. Won't adapt to your XSi. The word fungus will scare away most people. Sell it on eBay for a couple of bucks.


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PKSmith
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Apr 27, 2009 11:22 |  #3

Well, I've spent some time taking it apart, and managed to clear the inside of the lens. It was the foam from a poor packaging job that was in the lens. There is no fungus at all.

I've seen a thread on here about someone converting an FD 35mm tilt-shift lens to EOS, and thought that I could do the same this summer when I am not at work. I have access to tools and everything, and figured that that would be something fun to work with. I thought I could just machine off the extra distance needed to make infinity focus possible, then attach an adapter to it so it would act like a normal lens.


| Rebel XSi | EF-s 18-55 f/3.5-5.6 IS | EF 50 f/1.4 | EF 70-200 f/4L | Speedlight 199A |

  
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versedmb
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Apr 27, 2009 11:50 |  #4

I don't think it will work, although you might want to check with this group...

http://www.fredmiranda​.com/forum/board/55 (external link)


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gasrocks
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Apr 27, 2009 12:23 |  #5

No, this FD lens will not be easily converted to an EF mount.


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jblaschke
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Apr 27, 2009 13:12 as a reply to  @ gasrocks's post |  #6

You're better off adapting old Nikon or Pentax lenses to an EOS camera. The FD and FL mounts are far more trouble than they're worth. Believe me, I've looked into it...


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dnas
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Apr 27, 2009 18:35 |  #7

I've converted an FL mount on a Canon FL 50mm F1.2 previously. It is MUCH easier to convert FL lenses than FD lenses, because while the FDs have the aperture ring near the lens mount, FL lenses have it near the front of the lens. This means that you do not have to disable the aperture ring.

It will be a bit of work, especially when you consider that the FL 135mm F2.5 is most probably only single coated. If you decide to go ahead, I'd suggest buying an M42 screw mount to Canon EF adapter, with the AF confirm chip. If you need to adjust the mounting of the adapter for thickness, you can sand it. Then you can glue it(or drill holes and screw it) to the lens after the original mount is removed.




  
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nureality
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Apr 27, 2009 19:38 |  #8

PKSmith wrote in post #7804804 (external link)
I've acquired a Canon FL mount 135mm f/2.5 in great shape from ebay. The only flaw is a bunch of dust or fungus in the gap that the aperture is in. I was wondering if anyone had any experience with lenses this old, or if you could point me in the right direction. I've already made a post in the maintenance and repair section of the manual focus forums, but I figured I'd try here as well.

I'd be careful with that Speedlite 199A on your XSi, you could end up shorting out the hotshoe and killing the flash in one fell swoop.


Alan "NuReality" Fronshtein
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