Can old lenses be used with new digital cameras.

Discussion in '35mm Cameras' started by Mike, Jan 14, 2008.

  1. Mike

    Mike Guest

    Hello, all!

    Are the new (digital) cameras compatible with lenses used for older 35mm
    film cameras?

    I am specifically talking about a Ricoh XRP camera I bought about 20 years
    ago. The TP lens I bought for it is a "Rikenon P Zoom 1:3.9 70~210 mm
    Macro. (58 mm).

    Is there a brand of digital camera that will work with this lens? Or has
    lens technology developed so much in the last 20 years that it is not worth
    the bother? I did a bit of web searching last week, and it is apparently an
    "RK" type mount. Is there some kind of adapter that can interconnect old
    mounts to new ones? (I know I can always use duct tape...)
    Mike, Jan 14, 2008
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  2. Mike

    Guest Guest

    rk is ricoh's variant on the pentax k mount and it's no longer fully
    compatible with pentax k. althought it will fit, if you mount it on a
    recent pentax camera, you will likely be unable to remove it without a
    lot of surgery. in other words, it's not compatible.
    Guest, Jan 14, 2008
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  3. Mike

    Doug Jewell Guest

    RK is Ricoh's variant on Pentax's K Mount, which is still
    used by all Pentax and Samsung DSLRs.

    RK lenses though have a small pin that is used to tell the
    body when the lens is in the "P" setting (Pentax lenses have
    an "A" setting, but communicate this electrically). This pin
    _may_ foul on the auto-focus drive shaft when the lens is
    being removed which would be a big problem. (My one RK lens,
    a 35-70, has never been a drama). The pin can be removed if
    you are concerned, although it won't meter automatically on
    your old film camera if you do that.

    When using these old lenses on modern Pentax DSLR bodies,
    you only have stop-down metering available. The procedure on
    the K10D is to have the camera in the M mode, set the
    aperture on the lens, then use DOF preview to stop down the
    lens and take a light reading. Pressing the Green button
    while the lens is stopped down will automatically set an
    appropriate shutter speed.

    As for whether using old lenses on a new body is worth it...
    bear in mind that a modern lens will give you full auto
    metering, and full auto-focus. Manual focus can sometimes be
    difficult to use on a DSLR. But to offset that, some of
    these old lenses have superb optics that are a match for
    pretty much anything modern. If you already own the old lens
    it doesn't cost you anything - replacing it would set you
    back several hundred (or more) dollars, just to get the
    convenience of auto. Trade that off also against whether
    having to buy an appropriate body will limit you in your
    choices (Although the K100D and K10D are fantastic cameras,
    and new models are apparently just around the corner which
    should be even better).
    Doug Jewell, Jan 14, 2008
  4. Mike

    Pudentame Guest

    Ricoh's RK mount is a licensed version of the Pentax K-mount ... as such
    any Pentax DSLR (or Samsung DSLR - they also use the Pentax K-mount)
    should be able to use the lens, although I don't know why you'd want to,
    it's not a very good lens.
    Pudentame, Jan 14, 2008
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