Weird FD Lens?

Discussion in 'Collector's Corner' started by MadisonWI, May 22, 2007.

  1. MadisonWI

    MadisonWI TPF Noob!

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    Hi,

    I'm thinking about buying a bargain FD 28mm F2.8 S.C lens, but I have one question - on the backside of the lens, there is a little 'switch' that points to either a red "L" or a white dot. What exactly does this 'switch' do? I haven't seen it on any other FD lenses.

    Thanks!
     
  2. Mitica100

    Mitica100 Moderator Staff Member Supporting Member

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    Not sure! It could be that the "L" stands for locked as in mount being locked. Can you post a picture of it?
     
  3. Mitica100

    Mitica100 Moderator Staff Member Supporting Member

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    Also, is it made by Canon or is it an off brand?
     
  4. MadisonWI

    MadisonWI TPF Noob!

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  5. Mitica100

    Mitica100 Moderator Staff Member Supporting Member

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    It's OK to post links like the above here.

    As for the lens, that is an older model, having the 'breech' FD mount, where you had to turn the chrome ring in order to lock the lens in position. Later that was discontinued and the true 'bayonet' mount took its place. They're both FD mount, have the same great optics.

    That lever... hmm... I don't know what is for. It'd be interesting to see if you engage it in the 'L' position what it would happen.

    If it's cheap, buy it. ;)
     
  6. DSLR noob

    DSLR noob TPF Noob!

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    it's a red L you know what that means? You can toggle it being an L series lends. Put it on white dot mode when you are paying for it, then go home and switch it to L.

    (NOTE: that was all a joke I have no idea what it does)
     
  7. BernieSC

    BernieSC TPF Noob!

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  8. usayit

    usayit No longer a newbie, moving up!

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    Isn't that the red L marking that is suppose to line up with the dot or red mark on the breech ring prior to mounting the lens to the camera?
     
  9. lostprophet

    lostprophet No longer a newbie, moving up!

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    from memory, its been years since we had one in the shop, it was used to LOCK the lens in stopdown metering mode for the older bodies that took the FL lenses and maybe even the older R series bodies
     
  10. malkav41

    malkav41 TPF Noob!

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    If this is still pertinent, the lever is used to lock the lens aperture into manual mode.
     

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