Manual Focus Lenses Forum Index
 FAQFAQ   SearchSearch|Quick search    MemberlistMemberlist   UsergroupsUsergroups  Rss feed   RegisterRegister 
 ProfileProfile   Log in to check your private messagesLog in to check your private messages   Log inLog in 
Canon 1,2/55mm S.S.C.... EOS conversion-Documentation

 
 
Post new topic   Reply to topic    Manual Focus Lenses Forum Index -> Equipment Care and Repairs
View previous topic :: View next topic  
Author Message
hinnerker



Level 3

Joined: 17 Aug 2009
Posts: 899
Location: Germany near Kiel

Expire: 2015-08-09

PostPosted: Sat Jan 16, 2010 10:11 am    Post subject: Canon 1,2/55mm S.S.C.... EOS conversion-Documentation Reply with quote

For those of you who are interested to convert a Canon FD 1.2/55mm S.S.C – lens, I wrote this article with some pictures to explain, how it could work and did work for me.

Not a perfect work in terms of cosmetical but fast and usefull,




Necessary parts:

1 Adapter Olympus OM to Canon EOS with 2mm thickness
1 tension spring of about 50mm
1 Yashica cap with diameter 57mm as later light seal
1 small ring with the same diameter as the OM to EOS Adapter or something else as a
spacer with a thickness of 0,75mm to 1mm. This controls the infinity.
you can also take some tesafilm stripes in layers to adjust. Without you will reach
behind infinity

Tools:
Mini Drill and two drills (1mm and 3mm I did use)
Some watch repair screwdrivers in better qualitiy

OK, lets start..

First of all an important thing for me was, to make the whole process reversible.
If the conversion would failed, I would make sure, the lens could be brought to his original state.

So I thought about a non destructive way of doing this conversion.

First I removed the outer chrom ring of the FD Mount. This can be done by unscrew 2 very little screws in the chrom ring, which are holding a slider that acts as a opener for the aperture if you turn the ring in the correct position to attaching the lens on the body.

Pics 1 + 2

Chrome Ring with the 2 screw hole's..





After removing the screws, you are able to turn out the chrom ring clockwise. From time to time, a small STOP - PIN will stop in one of the 3 hole's. Push this pin down.. so you can go further with the unmounting of the chrom ring.

OK, the ring is off. Attention, there falls down the little slider I described before.. this is the part, which opens the aperture when the chromring was turned to attach the lens.. No worry, its easy to bring it back in the right position if you want to rebuild the original state. But that later.



Now we can see a TUBUS-End - block with the screw thread, the chrom ring was attached on the lens body.




This Tubus – Block was fixed with 3 screws. These screws are very important for the further conversion.

Ok, lets take now the OM to EOS Mount Adapter.. compare the diameter of the Tubus-end Block with the inner diameter of the adapter…




You will find nearly the same diameter only with the problem, the Olympus wings are needless.
So this is the first part of modification. file them down !!

Now you can dismantle the Tubus-block by unscrewing the 3 screws..




After doing this, you are able to bring the OM Adapter and the Tubus Block as close together
as you want, to copy(mark the position of the 3 hole’s to the OM to EOS Adapter.
(Please make sure during this process the correct orientation of the scales on the lens for later position when attached to the camera body)

After drilling these 3 hole’s (1-1.5mm) in the OM Adapter, take the second drill (2.5-3mm) and open the hole’s nearly 1mm for the screw heads.

After doing this… the most work is done.



The Tubus-block with the screwthread holds the complete lever mechanism for the aperture coupling to a Canon FD Body. After unscrewing this, you can detached the whole mechanism in one part.

So, now you are ready to attache the OM to EOS Adapter to the lens by taking the 3 screws and fix the adapter there, where the tubus-block was in place.

But pay attention, you will come far behind infinity !! And the mirror of a 5D will hang!!!

Lets do some thoughts:

The Tubus – block has a thickness of 5.5mm



.. the difference between FD (42mm) and EOS Mount (44mm) is 2mm. The OM Adapter takes another 2mm of the 5.5mm…

In theorie you should attach a spacer of 1.5mm between lens tubus and OM Adaptor to get infinity and the position of the lens than should be right.

But that’s only Theorie..
I didn’t know, if the Lens reaches infinity on a Canon FD Body, so I decided to attach the OM Adapter without a spacer and have a look, what happens.

The result:

After experimentating a bit with some spacer.. a 1mm ring works fine for me.




I tried this out with my Canon EOS 5D MKII in LievView – Mode.

This can be different from lens-copy to lens-copy.

OK, this is the first part of the modification.


There are 2 other problems:

The Aperture controls are gone… bad.

But this problem is so easy to solve, I couldn’t believe that first.

The only thing you need, is a tension spring of 50mm. This was attached as shown in this picture. The tension spring pulls the aperture in close direction, and a small slider, attached on the Aperture rings opens the aperture with each click.
So this problem is very easy to solve. A picture says more than 1000 words... have a look at both ends of the tension spring and the black lever, which press the fork when turn the aperture ring in 1.2 direction !



The second problem is to find a “light seal” for the construction. Also easy..
After looking around in my camera toolbox I found a rubber frontlens-cap from Yashica with the correct Diameter of 57mm.




Not very nice, but works great and i will find some other possibilitys to make them look more professional.

Remember, this was a fast, quickn dirty conversion to find out, this could work.


Work was done…

There is an additionally possibility to fine adjust the infinity point behind the engraving frontring of the lens. After removing the name ring, there is a key-locking ring, for adjusting the focus part of the helicoid. But i didnt have the tools for doing this at the moment. I will do this later.


I hope this was interesting for you and my english is not as good as it should be for writting such articles...

Enjoy..

Cheers
Henry


LIMITATIONS: You can use the lens in the whole range from near to infinity only on APS cams because of the mirror issue. If you file down about 1mm of the mirror for a Canon 5D or 5D MKII, you can reach infinity without any problem. I will do this, if my 5D MKII is out of warranty. During this time, i will use this superb lens only within 10m or at infinity in LiveView-Mode.
_________________
some light-painting lens stuff.. Very Happy
... and an EOS 5D MKII

www.digicamclub.de


Last edited by hinnerker on Thu Jan 21, 2010 8:21 am; edited 10 times in total
Back to top
View user's profile Send private message Visit poster's website  No rate
Share
LucisPictor



Level 4

Joined: 26 Feb 2007
Posts: 17149
Location: Oberhessen, Germany / Maidstone ('95-'96)

Expire: 2013-12-03

PostPosted: Sat Jan 16, 2010 10:18 am    Post subject: Reply with quote

Thanks, Henry!
_________________
Personal forum activity on pause every now and again (due to job obligations)!

Carsten, Moderator
Things ON SALE
Carsten = "KAPCTEH" = "Karusutenu" | T-shirt?.........................My photos from Emilia: http://www.schouler.net/emilia/emilia2011.html
Sets:
Leica M8: Voigtländer Heliar 4.5/15 & Ultron 2/28 & Heliar 2.5/75, Leica Summitar 2/50, Leica Tele-Elmarit 2.8/90, Jupiter-3 1.5/50
Fuji X-T1/X-E1: XF 2.8-4/18-55 OIS, XF 1.4/35, XC 50-230, Sigma 12-24, Pentax-A 1.4/50 & M 1.7/50, LensTurbo, Fujinon 1.8/55, Walimex 3.5/8 FE a.s.o.
Nikon 1 V1: 10-30, 30-110, 1.8/18.5, Fujian 1.4/25, 1.7/35, 1.4/50 (c-mount)
Pentax K100D: Sigma 18-200, Pentax DA 1.8/50, Pentax-A 1.4/50, Samyang 2.8/14, Tamron A2 ...
Nikon D7000 & D1: Tamron 2.5/24, Vivitar 2.5/28, MIR-24N 2/35, Nikkor AI 1.8/50, Nikkor-H 1.8/85, Tamron 2.5/135
Canon EOS 5: Rokkor 2/28, MIR-24N 2/35, Nikkor-SC 1.2/55, Elmar 4/180, Tamron 8/500, Tamron 2.8-3.8/35-80, Canon EF 1.8/50, Tamron 28-80, 80-210
Panasonic Lumix GF3: 14-42, Pentax-110 2.8 (18/24/50/70), M-Lenses, c-mount lenses
Canon EOS 300D: Tamron 2.5/24, Steinheil 2.8/35, Zuiko 1.4/50, Helios-44 2/58, Jupiter-9 2/85, Vivitar S1 2.3/135, Jupiter-37 3.5/135
Fuji ST701: Tamron 2.5/24, Mamiya or Fujinon 1.8/55, Jupiter-9 2/85, Tamron 2.5/135, Soligor 2.5-3.5/35-70
Ricoh KR10x: Pentax-M 1.7/50, Rikenon 3.4-4.5/35-70, Porst 3.5/35-105
Nikon F: Nikkor 2.8/24, Nikkor-SC 1.4/50 (other Nikkor glass)
Asahi Spotmatic SPII: Tamron 2.5/28, Mamiya 1.8/55, Soligor 2.5-3.5/35-70
EXA Varex: CZJ Biogon 2/58
Leica IIIa sync: Leitz Summitar 2/5cm
Zorki-4: Jupiter-8 2/50
Leica C2, Nikon F601, Minox 35 GL,Yashica Electro 35 GS, Kodak Retina Ia, Agfa Super Silette, Vivitar Ultra Wide & Slim and some others...
Digicams:
regularly used = Sigma DP1s, Lumix LC-5 & FX37, Lumix FZ20, Canon G3IR, Sony V1
rarely used = Sony Mavica 300, Fuji 4800Z + 4900Z, Oly C3030, Pentax Optio S, Nikon CP950, a.s.m.
Old list: http://forum.mflenses.com/viewtopic.php?t=65 (Not up-to-date, sorry!) | http://www.lucispictor.de | http://www.alensaweek.wordpress.com |
http://www.retrocamera.de
Back to top
View user's profile Send private message Visit poster's website  No rate
Share
sichko



Level 3

Joined: 20 Jun 2008
Posts: 2461
Location: South West UK


PostPosted: Sat Jan 16, 2010 12:47 pm    Post subject: Reply with quote

Thanks for the description. I shall probably never work on such a lens but it's always a pleasure to see other people's ingenuity.
_________________
John
Back to top
View user's profile Send private message  No rate
Share
pau.cc




Joined: 18 Dec 2009
Posts: 23
Location: Madrid


PostPosted: Sun Jan 17, 2010 2:51 am    Post subject: Reply with quote

Amazing!
I'll take a look deeper at a later time!
Thanks!
Back to top
View user's profile Send private message Visit poster's website  No rate
Share
francotirador



Level 3

Joined: 17 Sep 2009
Posts: 778
Location: Buenos Aires


PostPosted: Sun Jan 17, 2010 7:57 pm    Post subject: Reply with quote

Thank you very much for this example.
Now I just want to see your photos with this lens.
Greetings Wink
_________________
Canon 5D II
Canon L 80-200 f 2.8 - Canon L 135 f2 - CAnon FD 35-105 f3.5 Convert to EOS - Canon FD 135/2.5 convert to EOS - Canon FD 24/2.8 convert to EOS - Nikkor P 105 2.5(desing sonnar) - Yashica 50 1.4 ML - Carl Zeiss planar 50/1-7 - Distagon 35mm 2.8 T AEJ -
Minolta MD 35-70/3.5 (leica) convert to EOS& Matte Box & filters 4X4
www.isgleasphoto.com

The life is more easy with this forum ....
Back to top
View user's profile Send private message Send e-mail Visit poster's website MSN Messenger  No rate
Share
hinnerker



Level 3

Joined: 17 Aug 2009
Posts: 899
Location: Germany near Kiel

Expire: 2015-08-09

PostPosted: Wed Jan 20, 2010 5:10 pm    Post subject: Reply with quote

francotirador wrote:
Thank you very much for this example.
Now I just want to see your photos with this lens.
Greetings Wink


Ok, will add some Quickn dirtys in some minutes..

Cheers
Henry
_________________
some light-painting lens stuff.. Very Happy
... and an EOS 5D MKII

www.digicamclub.de
Back to top
View user's profile Send private message Visit poster's website  No rate
Share
hinnerker



Level 3

Joined: 17 Aug 2009
Posts: 899
Location: Germany near Kiel

Expire: 2015-08-09

PostPosted: Wed Jan 20, 2010 5:25 pm    Post subject: Reply with quote

Ok, now some quickn dirty shots after mount conversion.

First of all a "extreme" shot.. at f/1.2 on dayligt, snow and reflecting surfaces.. glowing is normal for a 1.2 under this conditions...

First the scene in total..



Now a crop out of it to show the "Glow"...




And this is a crop from a shot, using a bounced flashlight, f/4.0..



and this is a crop from the crop ... i should clean from dust.. Very Happy




Will add some more and better pics, if the wheater conditions are better.

Cheers
Henry
_________________
some light-painting lens stuff.. Very Happy
... and an EOS 5D MKII

www.digicamclub.de
Back to top
View user's profile Send private message Visit poster's website  No rate
Share
bojan




Joined: 22 Feb 2010
Posts: 2
Location: Melbourne, AU


PostPosted: Mon Feb 22, 2010 10:59 am    Post subject: Canon 100mm F2.8 FD Reply with quote

Hi,
Recently I modified my "new" 100mm Canon FD SSC F2.8 lens to suit my EOS 400D (by replacing the FD mechanism with $10 EOS adapter from ebay).
The only thing remained to be done is to adjust the focus (to reach infinity) .
Anybody could tell me how to get to the focus stops?
I gently tried to dismantle the lens from the front (by removing the plastic ring with SSC etc letters) but I could not get to the stops this way..
Back to top
View user's profile Send private message  No rate
Share
hinnerker



Level 3

Joined: 17 Aug 2009
Posts: 899
Location: Germany near Kiel

Expire: 2015-08-09

PostPosted: Thu Mar 25, 2010 5:01 pm    Post subject: Re: Canon 100mm F2.8 FD Reply with quote

bojan wrote:
Hi,
Recently I modified my "new" 100mm Canon FD SSC F2.8 lens to suit my EOS 400D (by replacing the FD mechanism with $10 EOS adapter from ebay).
The only thing remained to be done is to adjust the focus (to reach infinity) .
Anybody could tell me how to get to the focus stops?
I gently tried to dismantle the lens from the front (by removing the plastic ring with SSC etc letters) but I could not get to the stops this way..


Yes, please read this article i wrote.. sorry, only in german language, but with lots of images shown exactly how to solve your problem..

Maybe use a good online translator.. and read Teil 2 (part 2) of documentation.. there you can also see in pictures, how the infinity point is adjusted. You have to put away the filter thread mount and the focus barell, which are assembled on the helicoid. Dont know this exactly in case of the 100mm but 1.4/50mm and 1.2/55mm work in that way, so it should be the same on the 100mm.

http://www.digicamclub.de/showthread.php?12322-Canon-FD-1.2-55mm-SSC-Umbaudoku..

Regards
Henry
_________________
some light-painting lens stuff.. Very Happy
... and an EOS 5D MKII

www.digicamclub.de
Back to top
View user's profile Send private message Visit poster's website  No rate
Share
bojan




Joined: 22 Feb 2010
Posts: 2
Location: Melbourne, AU


PostPosted: Sun Jul 18, 2010 3:39 am    Post subject: Re: Canon 100mm F2.8 FD Reply with quote

Hi Henry,
Thank you Smile
I only saw your answer now (June).. because I in the meantime I already sorted out the problem (the focus barrel on 100mm is held in place by retaining threaded ring, and not by 3 small screws as on 50mm)
But nevertheless.. thank you again Smile



hinnerker wrote:
bojan wrote:
Hi,
Recently I modified my "new" 100mm Canon FD SSC F2.8 lens to suit my EOS 400D (by replacing the FD mechanism with $10 EOS adapter from ebay).
The only thing remained to be done is to adjust the focus (to reach infinity) .
Anybody could tell me how to get to the focus stops?
I gently tried to dismantle the lens from the front (by removing the plastic ring with SSC etc letters) but I could not get to the stops this way..


Yes, please read this article i wrote.. sorry, only in german language, but with lots of images shown exactly how to solve your problem..

Maybe use a good online translator.. and read Teil 2 (part 2) of documentation.. there you can also see in pictures, how the infinity point is adjusted. You have to put away the filter thread mount and the focus barell, which are assembled on the helicoid. Dont know this exactly in case of the 100mm but 1.4/50mm and 1.2/55mm work in that way, so it should be the same on the 100mm.

http://www.digicamclub.de/showthread.php?12322-Canon-FD-1.2-55mm-SSC-Umbaudoku..

Regards
Henry
Back to top
View user's profile Send private message  No rate
Share
Display posts from previous:   
Post new topic   Reply to topic    Manual Focus Lenses Forum Index -> Equipment Care and Repairs All times are GMT
Page 1 of 1

 
Jump to:  
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum


Powered by phpBB © 2001, 2005 phpBB Group