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Archive 2012 · lens repair, modification and disassembly guide thread
  
 
LightShow
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p.11 #1 · p.11 #1 · lens repair, modification and disassembly guide thread


Thanks, that looks easy enough, should be able to add a click stop too?
I'll have a look at mine when I go to do my aperture linkage.



Dec 17, 2013 at 01:04 AM
sebboh
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p.11 #2 · p.11 #2 · lens repair, modification and disassembly guide thread


LightShow wrote:
Thanks, that looks easy enough, should be able to add a click stop too?
I'll have a look at mine when I go to do my aperture linkage.


you can, i didn't find any need. it seems to stay at either end and feels just as stable as a click stop without me adding any.




Dec 17, 2013 at 08:10 AM
ISO1600
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p.11 #3 · p.11 #3 · lens repair, modification and disassembly guide thread


I bought a 28/2 FDn this weekend for reasonably cheap, with light fungus.... didn't notice it in the store, it's so light... ugh

Since it's an FDn, the beauty ring on the front doesn't just screw off, correct?
I haven't found a good demonstration online of how to open this lens up, I'd like to clean whatever I can on it- looks like it is just on the rear of the front element.



Dec 17, 2013 at 10:44 AM
alan_m
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p.11 #4 · p.11 #4 · lens repair, modification and disassembly guide thread


ISO1600 wrote:
I bought a 28/2 FDn this weekend for reasonably cheap, with light fungus.... didn't notice it in the store, it's so light... ugh

Since it's an FDn, the beauty ring on the front doesn't just screw off, correct?
I haven't found a good demonstration online of how to open this lens up, I'd like to clean whatever I can on it- looks like it is just on the rear of the front element.

The front name-text ring should pop off, either via a dedicated hole in the barrel - check here for how on the 100/2.8:
http://photo.net/canon-fd-camera-forum/00Yf4W?start=10
...or it probably prises off from the front - like this:
http://ericwangprojectlog.blogspot.ie/2012/07/canon-fdn-50mm-f14-front-element-dis.html

Alan



Dec 17, 2013 at 02:35 PM
sebboh
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p.11 #5 · p.11 #5 · lens repair, modification and disassembly guide thread


LightShow wrote:
Thanks, that looks easy enough, should be able to add a click stop too?
I'll have a look at mine when I go to do my aperture linkage.


here's a pic of what the ring looks like after trimming:
http://farm8.staticflickr.com/7341/11468314684_28d9a77119_o.jpg

also, i put my g45 all the way in the new rings and tuned infinity. it works great! and it matches my g28 now. of course i don't have a filter ring anymore since i shaved the old one off. leaves the optics rather exposed. wonder if zeiss has old parts...
http://farm6.staticflickr.com/5482/11468299704_c0a65dcf5e_o.jpg




Dec 20, 2013 at 08:40 PM
LightShow
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p.11 #6 · p.11 #6 · lens repair, modification and disassembly guide thread


Mine is more or less finished, I need longer screws so I can shim mine correctly, right now the front ring extends out past the focus ring creating a small gap.
Sebboh, does yours need shims to reach infinity or extend past the focus ring?
If not, there may be differences between your G45 & 55/1.7 combo and mine



Dec 21, 2013 at 06:14 PM
flashinm
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p.11 #7 · p.11 #7 · lens repair, modification and disassembly guide thread


Any idea if these rings will work with a G35? I got my rings, but I haven't started this project yet. I was just thinking I might rather have a helicoid on the 35mm.


Dec 21, 2013 at 06:19 PM
sebboh
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p.11 #8 · p.11 #8 · lens repair, modification and disassembly guide thread


LightShow wrote:
Mine is more or less finished, I need longer screws so I can shim mine correctly, right now the front ring extends out past the focus ring creating a small gap.
Sebboh, does yours need shims to reach infinity or extend past the focus ring?
If not, there may be differences between your G45 & 55/1.7 combo and mine


mine creates a gap at mfd when tuned correctly for hard stop at infinity. probably should have add an extra millimeter or 2 to the thickness of the rear ring. i doubt i'll bother shimming it since the gap is only there at macro focus distances.

flashinm wrote:
Any idea if these rings will work with a G35? I got my rings, but I haven't started this project yet. I was just thinking I might rather have a helicoid on the 35mm.


the g45 rings will almost certainly not allow infinity focus with the g35. the g28 rings might work for the g35 but there is a reasonable chance that the internal diameter of the front ring may be too narrow or that the screws for mounting the optical block may be in the wrong location. sadly, i don't have my g35 anymore to check. i'm tempted to pick up another though for use on the a7 when i get one.




Dec 21, 2013 at 11:52 PM
LightShow
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p.11 #9 · p.11 #9 · lens repair, modification and disassembly guide thread


I brought my Frankenzeiss to The Camera Store as I had to pick up some lens caps for it and other lenses, I showed it to one employee and it wasn't long till I had other employees coming over wanting to get a look at the Frankenzeiss, comments like "What? No way? Cool! Etc...


Dec 22, 2013 at 01:51 AM
LightShow
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p.11 #10 · p.11 #10 · lens repair, modification and disassembly guide thread


LightShow wrote:
Mine is more or less finished, I need longer screws so I can shim mine correctly, right now the front ring extends out past the focus ring creating a small gap.
Sebboh, does yours need shims to reach infinity or extend past the focus ring?
If not, there may be differences between your G45 & 55/1.7 combo and mine


sebboh wrote:
mine creates a gap at mfd when tuned correctly for hard stop at infinity. probably should have add an extra millimeter or 2 to the thickness of the rear ring. i doubt i'll bother shimming it since the gap is only there at macro focus distances.

Ok, that makes me feel better, 2-3mm should do it, yeah, I may shim it later, it will for sure do just fine for now.



Dec 22, 2013 at 02:12 AM
 

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flashinm
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p.11 #11 · p.11 #11 · lens repair, modification and disassembly guide thread


Ok thanks. I'll do the 45 for now, and if anyone else is interested in the 35 later maybe we can do something similar.


Dec 22, 2013 at 07:00 PM
m-a-x
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p.11 #12 · p.11 #12 · lens repair, modification and disassembly guide thread


Cross post from the 'most recent alt lens purchase thread'.
However, in this thread the LENS TURBO is in focus.
It is sitting between the Konica Hexanon and the X-E1



Dec 28, 2013 at 09:47 PM
LightShow
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p.11 #13 · p.11 #13 · lens repair, modification and disassembly guide thread


X post.
frankenzeiss G45 @ 45+ MPH





Jan 16, 2014 at 11:03 AM
JimBuchanan
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p.11 #14 · p.11 #14 · lens repair, modification and disassembly guide thread


sebboh wrote:
also, i put my g45 all the way in the new rings and tuned infinity. it works great! and it matches my g28 now. of course i don't have a filter ring anymore since i shaved the old one off. leaves the optics rather exposed. wonder if zeiss has old parts...


You mean the G45 ring with the filter threads?

I may have one.



Jan 16, 2014 at 02:34 PM
sebboh
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p.11 #15 · p.11 #15 · lens repair, modification and disassembly guide thread


JimBuchanan wrote:
You mean the G45 ring with the filter threads?

I may have one.


yeah, the silver part with the filter threads. that it be awesome if you had one to spare.




Jan 16, 2014 at 04:16 PM
Gary Clennan
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p.11 #16 · p.11 #16 · lens repair, modification and disassembly guide thread


Have any of you torn apart a Jupiter 3 lens? I have one which has a stiff focus and very stiff aperture ring. I really don't want to invest even $20 in this lens and wanted to see if a lube is something I could do myself?


Jan 18, 2014 at 11:47 PM
sebboh
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p.11 #17 · p.11 #17 · lens repair, modification and disassembly guide thread


Gary Clennan wrote:
Have any of you torn apart a Jupiter 3 lens? I have one which has a stiff focus and very stiff aperture ring. I really don't want to invest even $20 in this lens and wanted to see if a lube is something I could do myself?


i took mine apart to some degree to remove the focus stop. don't recall what degree of disassembly that required, but it was pretty simple to do. i would pm brian: http://www.fredmiranda.com/forum/topic/1266066/1#12060113

i'm pretty sure i got directions on how to do it from something he posted on rff or elsewhere.




Jan 19, 2014 at 12:55 AM
Gary Clennan
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p.11 #18 · p.11 #18 · lens repair, modification and disassembly guide thread


Thanks! I will pm Brian.


Jan 19, 2014 at 01:02 AM
BrianVS
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p.11 #19 · p.11 #19 · lens repair, modification and disassembly guide thread


Saw this- I sent Jason Howe my instructions for Jupiter-3 CLA, and Sonnar conversions.

http://aperturepriority.co.nz/50mm-jupiter-3-f1-5-information/

It's not hard. Keep all the screws in order, put them back in the same holes that they came out of.



Jan 19, 2014 at 01:47 AM
Gary Clennan
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p.11 #20 · p.11 #20 · lens repair, modification and disassembly guide thread


That is just what I needed! Thanks Brian.


Jan 19, 2014 at 02:26 AM
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