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Canon FD mount....??

Bustoner

Well-Known Member
Hi all,

I'm fresh on this Forum, I'm from Italy, so sometime sorry my english.

I have many lenses of my old Canon AE1, and I wish somebody tell me ...yes, an adapter already exist.


If not, soon I will prepare one by my self

Bustonèr
 

Bustoner

Well-Known Member
why an admin cancel my 2nd post? don't understand

Nobody with my same idea for try making this FD mount
 

dirk

CI-Founder
why an admin cancel my 2nd post? don't understand

Nobody with my same idea for try making this FD mount

Hi Bustoner,

we do not allow links to external images here. Please read for the reasoning the FAQ or the suggestion/help section (
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).

This is also announced when you register here in the registration form by the way ;)

Best wishes
 

tc95

Well-Known Member
Bustoner.....if you have the chance to make one for Minolta MC/MD mount...like we discussed at SigmaCumLaude.....let me know...

Tony C.
 

tc95

Well-Known Member
Bustoner....I found this link....
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...which discusses how to change the SA mount to fit Canon FD....so this probably would work...in reverse too...I would find a cheap SA mount lens....and a Cheap FD mount lens...and play with it....

Good Luck...

Tony C.
 

tc95

Well-Known Member
Bustoner....I found this link....
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...which discusses how to change the SA mount to fit Canon FD....so this probably would work...in reverse too...I would find a cheap SA mount lens....and a Cheap FD mount lens...and play with it....

Good Luck...

Also read this.....
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Tony C.
 

dirk

CI-Founder
Hi

there are lenses with which it does work. One of our german moderators (andreas_f) in our German Sigma forum has done this. He uses the Canon 5D MK II and i think it is the Sigma Makro lens.

But the question is, whether this is worth the effort and with which lens you really want to do this.

I find it frankly a lot simpler just to obtain a bargain price on a Sigma lens with canon mount at ebay. Price difference will be small if you have to pay someone to do it for you and you do not risk to destroy anything on an expensive lens ;)

Best wishes
 

Bustoner

Well-Known Member
Sorry again Dirk, and Tony too, I read only now your replys.

Tony, thanks for the links, the first you post maybe wrong, I try to find the "
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" ....can't find it, when I open is saying "Using Sigma SA lens on Canon EOS camera".

Maybe I was not describe as well, I like to know if a Canon FD lens can fit on the SD14, modifing the Sigma mount or the lens mount.

I wish I can make a good work like Jerry and Luis made.
 

tc95

Well-Known Member
Bustoner...No the link is right...they are taking Sigma SA mount lenses...and converting them to Canon FD mounts....with a little soudering..if they can do this...why not do the opposite..??

Take a Canon FD mount lens...and a Sigma SA mount...and put it on the lens....I don't know if this would work...at all...but that is why I said to purchase two cheap lenses to...see....

I am looking on ebay as I type to see what I can find...to test this out....if this works...you would have AF control with the lens....

(Sorry sometimes I think outside the box...(like across the street, down the road, thru the tree's outside the box..)):z04_nic_0075:

Tony C.
 

tc95

Well-Known Member
Ok...I understand...sorry...my mistake...I did not know canon EOS and FD are two different mount systems.....like Minolta Af is MC/MD lenses....

I am still going to see if I can pick-up an old FD lens...to see what might work....

Again...sorry...!!!

Tony C. :z04_cowboy:
 

tc95

Well-Known Member
The only thing I can see you doing.....right now...without a spacific mount like the one Luis does.....

Canon FD Lens to M42 then M42 to SA

But I can not find an Canon FD to M42 adapter....also I don't know if it will actually work at infinity...

Tony C.
 

Bustoner

Well-Known Member
Thanks Tony,

I check again the page and read better, slow english reading...hehehe

Yes, the FD is older than Canon EF, and still very good manual lenses, like this good web site have described:
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An adapter from FD to M42 I know exist, but there is a problem first ...the registration distance from the SD14 sensor is already closer even without any adapter between lens and camera, and even if I lay an FD lens on the SD14 mount, is incorrect ....I need to go inside of 2mm ....huuhhhh

Infinite will never be possible if I not respect the registration distance, and if I will use thick adapters, the only possibility is by having a lens in the adapter that corrects all ....an example is the adapter for mounting FD lenses on EF (EOS) cameras:
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don't think it's so good, a friend have it on his EOS 5D, and lens seems loosing sharpnes and Fstop, bad for very bright good lenses like 85mm f1.2.
 

tc95

Well-Known Member
Well then what I would do is get an old Canon FD body.....and see is you can backward engineer the mount to fit the Sigma SD14 mounting space and hole alignment....

I know you said you have someone that has laser tools to do this...I would approach him/her to see if they could do this for you....I bet you might have a little nitch market there...!!! :z04_yes:

Tony C.
 

Bustoner

Well-Known Member
Good idea Tony, if you like find a Canon FD camera mount for good price, you can find it on adapters, like tele-converters etc...

Sorry my english, I don't understand as well the last phrase:
".....I would approach him/her to see if they could do this for you....I bet you might have a little nitch market there...!!!"

Major problems: all FD lenses going inside the camera mount of 3mm, than have 2 dents, of 2,5mm more (total of 2 + 3 + 2.5 = 7.5mm inside from the sigma mount), then the diaphragm lever have to be definetely detached or in bad ways, cutted ....the infrared glass is in risk position :(

Sunday I will do more checks and misurations, no too much time ....to many projects.
 

Bustoner

Well-Known Member
No good chance now to construct an FD mount on the camera :( :( :(
maybe bset chance ...make a Sigma Mount for each FD lenses
Work in progress :)


...next, I will have in hand a Minolta MC/MD lens, and try there too.

For Nikon, I saw does not exist a Nikon to Canon adapter where you can use full electronic control, like full AF ...while a Canon to Sigma adapter works good (seems same electronic), so it will be such difficult to try ...will need a power conversion for motors, sensors etc and a good engineer.
 

DSG

Well-Known Member
Converting FL/FD mount lenses to SA mount...

Swapping an FL/FD mounting plate over to an SA mounting plate is easy to do but to achieve infinity focus on an SA mount camera you HAVE to machine 2mm off the lenses mounting boss (the bit the mounting plate screws onto) with a lathe.
This is because the SA mount has a registration distance of 44mm but the registration distance of the FL/FD mount is only 42mm.
A couple of years ago I converted a Canon FL 55mm f1.2 to SA mount with full infinity focus. Its a wonderfull lens and still one of my favorites because of its fantastic bokeh.
You can find a short video I made showing the lens being mounted on my SD14 on youtube.
 

tc95

Well-Known Member
The registration distance on Minolta/Sony AF mounts is 44.5..and for Minolta MC/MD lenses this is 43.5.....

Hope this helps you out Bustoner...

Tony C.
 

Bustoner

Well-Known Member
Swapping an FL/FD mounting plate over to an SA mounting plate is easy to do but to achieve infinity focus on an SA mount camera you HAVE to machine 2mm off the lenses mounting boss (the bit the mounting plate screws onto) with a lathe.
This is because the SA mount has a registration distance of 44mm but the registration distance of the FL/FD mount is only 42mm.
A couple of years ago I converted a Canon FL 55mm f1.2 to SA mount with full infinity focus. Its a wonderfull lens and still one of my favorites because of its fantastic bokeh.
You can find a short video I made showing the lens being mounted on my SD14 on youtube.

Thanks, DSG,
I saw yes the registrations, unfortunately the only way will be convert all FD lenses to SA.
Please, I can't find the youtube video....

Tony, I don't have possibility to find my friend with MC/MD lenses (waiting his reply), so I need to find one, will check soon on ebay ....I let you know
 
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