Canon FD Mount SLR Lenses

| No Comments
Canon Mount (FD/FL/EF) SLRs:
Canon R/FD/FL Breechlock Mount Lenses

by Karen Nakamura

Other Classic Camera Lens Mounts
Contax / Nikon RF Bayonet Mount
Leica Mount (M39/M)
Pentax Screw Mount (M42)

 

Overview and Personal Comments

The Canon R lens mount was introduced with the Canonflex in May of 1959. It was a breechlock (or spigot-mount) lens unlike most other mounts, which are either bayonet mount or screw mount. The advantage of breechlock-mount is that the lens-body mating surfaces do not slide against each other when mounting. This means that lens-body mounting wear can never degrade the optical performance (in reality, though this is a neglible issue since most uers don't change lenses often enough to wear these surfaces). The disadvantage is that the breechlock is "fussy" - it's hard to quickly mount an FL/FD lens in a rush without practice.

The R mount was revised in 1964 into the FL mount with the Canon FX. A new type of aperture-linkage was added. This allowed for TTL metering and opened up the diaphragm to full-aperture after the photograph was taken. Using the text or images on this website without permission on an ebay auction or any other site is a violation of federal law.

The FD mount was introduced in 1971 with the introduction of the Canon F-1 and FTb. The lens mount allowed for fully-coupled auto-exposure metering.

Around 1973, Canon started a new multi-coating process called SSC or Super-Spectra Coating. Lenses starting around 1971 were marked with SSC on the lens barrel.

The "New FD" mount was introduced in 1976 with the Canon AE-1. I am not sure what changed, although the lenses mostly moved to plastic bodies rather than metal bodies. Since almost all lenses were being multi-coated, many of the new FD lenses are not marked SSC anymore.

 

From: Matt Brown
Date: November 13, 2005
Subject: Correction to your "Canon R/FD/FL Breechlock Mount Lenses" page.

On your page on "Canon R/FD/FL Breechlock Mount Lenses" you state, "The 'New FD' mount was introduced in 1976 with the Canon AE-1. I am not sure what changed."

The fundamental change was that New FD lenses pretend to be bayonet-mount. Instead of turning a locking ring on the lens (the silver ring at the base) you now turn the whole lens barrel, just like
everyone else's lenses. The mounting surfaces still remain still against each other, but the rest of the lens turns - in effect, the whole lens barrel is now the 'locking ring'.

I imagine Canon did this because they found that photographers liked the mounting method of everyone else's lenses more than Canon's. That the bayonet mount was better, despite Canon's defense of the breechlock mount, is proven by Canon changing to bayonet for EOS in '87.

Thanks,

-Matt

(posted with permission from Matt, thanks! - KN)


 

Specifications
The R/FD/FL lens mount has three outer bayonet lugs (for the breechlocking action). The mount inner diameter is 48mm with a flangeback of 42mm, which is one of the thinnest flangebacks. This makes it easy to adapt almost any lens to Canon R/FD/FL mount, but very difficult to use Canon R/FD/FL lenses on any other camera. Using the text or images on this website without permission on an ebay auction or any other site is a violation of federal law.

Even the Canon EOS series cannot accept FD lenses easily because their flangeback distance is greater. Either you have to give up infinity focus or you have to use an adaptor with a negative lens element in it, which reduces optical quality as well as compatibility with the entire FD line. This annoyed many FD photographers greatly when migrating to the EF/EOS system (and gave Nikon users something to chortle about).

 

 


 

 

Technical Details-Wide Angle Lenses

Lens
24mm f/2.8 Canon FD SSC
 
Manufacturer
Canon Canon
Serial #
12130x  
Place of Manufacture
Japan Japan
Date of Manufacture
1973.3~??? ????
Lens Construction
9 elements in 8 groups ?
Lens Mount

Canon FD Mount

Focusing range

0.3 meter - infinity
Max mag = 0.11x

Right focusing (infinity at right)

 

Apertures

f/2.8 ~ f/16 (1 stop steps)
A - auto aperture mode

 

Filter Mount

Filter: 55mm. threaded

Filter: 49mm threaded
Lens cap: 49mm snap on

Dimensions and weight
330g
66mm x 52.5mm

Note: Using the text or images on this site in an ebay auction without permission is a violation of your ebay Terms of Service. I will report you to ebay if I discover such a violation taking place. This may result in your account being cancelled. I also reserve the right to file claim for civil penalties.

 

 

 

Technical Details-Standard Lenses

Lens
50mm f/1.4 Canon FD 50mm f/1.8 Canon FD 50mm f/1.8 Canon FD
Manufacturer
Canon Canon Canon
Place of Manufacture
Japan Japan Japan
Date of Manufacture
1971.3

1971.3 Model I
1971.11 Model II

1979.6
Lens Construction
7 elements in 6 groups (Modified Gauss / Planar Type) 6 elements in 4 groups 6 elements in 4 groups
Lens Mount

Canon FD Mount

Canon New FD Mount
Focusing range

0.45m - infinity
(right focusing, infinity on right)
Max magnication = 0.145x

46° angle of view (AOV)

0.6m - infinity
(right focusing, infinity on right)
Max Mag = 0.103

46° angle of view (AOV)

0.6m - infinity
(right focusing, infinity on right)
Max Mag = 0.1

46° angle of view (AOV)

Apertures

f/1.4 ~ f/16 (0.5 stop steps)
8 aperture blades

f/1.8 ~ f/16 (1 stop steps)
6 aperture blades

f/1.8 ~ f/16 (1 stop steps)
5 aperture blades

Filter Mount

55mm ø

55mm ø

52mm ø

Dimensions and weight
66mm D x 49mm H
370g
66mm D x 44.5mm H
305g
63mm D x 35mm H
170g
Retail price
¥ ¥14,800
¥22,000
Note: Using the text or images on this site in an ebay auction without permission is a violation of your ebay Terms of Service. I will report you to ebay if I discover such a violation taking place. This may result in your account being cancelled. I also reserve the right to file claim for civil penalties.

 

 

Technical Details-Telephoto Lenses

Lens
  85-205mm f/3.8 Tele-Zoom Auto Vivitar
Manufacturer
  Vivitar
Serial #
  2230401x
Place of Manufacture
  Japan
Date of Manufacture
???? ????
Lens Construction

4 elements in ?? groups
Angle of View (AoV) 18°

?
Lens Mount
 

Canon FD mount

Focusing range
 

2 meter - infinity

Right focusing (infinity at right)

Apertures
 

f/3.8 ~ f/22 (1 stop steps)

Filter Mount

Filter: 49mm threaded
Lens hood: 49mm threaded, reversible
Lens cap: 51mm slip-on

Filter: xxmm threaded
Lens hood: Built-in

Dimensions and weight

343g

 

Note: Using the text or images on this site in an ebay auction without permission is a violation of your ebay Terms of Service. I will report you to ebay if I discover such a violation taking place. This may result in your account being cancelled. I also reserve the right to file claim for civil penalties.

 


On the Net

Leave a comment