Digital twin lens reflex.

Discussion in 'Digital Cameras' started by James Silverton, Apr 19, 2013.

  1. I enjoyed playing with a friend's much prized Rolleiflex film camera. Do
    digital versions exist for cameras of this class? I was not able to
    search one out.
    James Silverton, Apr 19, 2013
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  2. James Silverton

    philo  Guest

    No, there would be no need to do so.

    I have a Mamya C220 that I retired a few years ago.
    As much as i loved it, my 50D beat it .

    I plan to keep it though as I doubt I could get ten dollars for it.
    philo , Apr 19, 2013
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  3. James Silverton

    RichA Guest

    No, you don't need a separate reflex view for digital cameras. Pretty
    soon, all optical view cameras will be gone.
    RichA, Apr 20, 2013
  4. James Silverton

    Bowser Guest

    maybe, but not until the mirrorless cams are fast enough for sports
    and journalism work, not to mention other uses, like BIF.

    I'm a mirrorless user only, and don't see that on the horizon.
    Bowser, Apr 21, 2013
  5. I have a quite recent point and shoot camera whose viewing screen, like
    all I have tried, washes out in bright sunlight. It also has an optical
    finder, which I made sure of before I bought it.
    James Silverton, Apr 21, 2013
  6. James Silverton

    RichA Guest

    LCD screens aren't what is going to dominate, unless you shoot with a
    phone. EVF's are going to be the norm shortly.
    They already eclipse optical viewfinders in a few areas. BTW, I saw
    someone shooting with a TLR today, it's kind of a novelty. Finding
    someone to develop 120 films is also fun.
    RichA, Apr 22, 2013
  7. James Silverton

    bugbear Guest

    bugbear, Apr 22, 2013
  8. James Silverton

    DanP Guest


    DanP, Apr 22, 2013
  9. James Silverton

    Joe Kotroczo Guest

    You do know what a "view camera" is, right?
    Joe Kotroczo, Apr 22, 2013
  10. James Silverton

    Bowser Guest

    My current cam, a GH3 is excellent in sunlight and even better in dim
    light. The EVF is well-shielded so sunlight never reaches it. The LCD
    screen is usable in sunlight, but will wash out a bit. I rarely use
    the LCD for shooting, only reviewing and menu settings.

    Which P&S do you have? I've never seen one with a really usable OVF.
    Most, like the Canon G series show only about 80% of the actual image,
    which is horrible (for me...).
    Bowser, Apr 22, 2013
  11. James Silverton

    Bowser Guest

    Pretty funny. Over the weekend I shot a roll of 120 with my Yashica
    Mat 124G and a roll with my Minox B. The Minox drew a few stares. I
    just had the Minox CLA'd and it seems to work fine. I'll know in a
    week or so when the film returns. Damn. Remember those days?
    Bowser, Apr 22, 2013
  12. James Silverton

    Peabody Guest

    James Silverton says...
    Maybe you could a put a digital back on one of these:

    Peabody, Apr 22, 2013
  13. Not really. I must have been one of the three people in the USA with
    Minox developing equipment. Much to my regret, I sold my Minox enlarger
    and got a special carrier, lensboard, and lens for the Beseler.

    You pretty much HAD to have the developing tank, and you know, the
    Minox brand developer did a pretty good job.
    Scott Schuckert, Apr 23, 2013
  14. James Silverton

    Alan Browne Guest

    I couldn't resist looking at the e-bay listing for Minox B.

    There are some nifty attachments available ...

    As to fillum, I intend to double my 120 use this year (to 2 rolls).

    Though I might do a studio B&W session in there as well.
    Alan Browne, Apr 23, 2013
  15. I seem to remember that you once could buy interchangeable double lenses
    for twin lens cameras. Was the brand Mamiya?
    James Silverton, Apr 23, 2013
  16. The biggest problem has always been in focusing performance. Prisms on
    optical sensors under the viewfinder of a DSLR let the camera jump
    instantly into focus. Optional focus screens with prisms let a
    photographer do the same manually. Mirrorless cameras need to cycle the
    focus plane back and forth and follow the direction with higher
    contrast. It's very slow and it eats up battery power.

    The tech to put the same fast focusing optics on digital sensors is
    still evolving. It can be done but it, being permanently attached,
    hurts the image quality. DSLRs have the advantage that everything moves
    out of the way for the photo.
    Kevin McMurtrie, Apr 23, 2013
  17. James Silverton

    Bowser Guest

    The GH3, in single shot AF mode, is *very* quick, and easily much
    quicker than the 5D II or 6D models I've shot. I know, those models
    aren't known for their AF speed, but the GH3 is a lot faster. In
    continous AF mode, the GH3 needs improvement. With the latest lenses,
    those capable of 240fps AF, it's not bad, about as good as the 5D II,
    bit nowhere near the fastest DSLRs.
    I don't think embedded PDAF is the future. It's a stop-gap at best
    until CDAF catches up. I believe it can, and will eventually.

    One huge advantage of CDAF is focusing accuracy. There's no need to AF
    calibration like there can be with PDAF since you're focusing right on
    the sensor.
    Bowser, Apr 23, 2013
  18. Yes, Mamiya. Most famously in the C330 models. I believe there were
    also Koni-Omegaflex and Zeiss Contaflex models with fully
    interchangeable lenses. Rollei also had their Mutar auxiliary lenses,
    probably the only worthwhile ones ever made.
    Scott Schuckert, Apr 23, 2013
  19. James Silverton

    RichA Guest

    That has the same basic optical systems as a DSLR. Think about it;
    it's an image from a lens projected on a frosted screen.
    RichA, Apr 24, 2013
  20. James Silverton

    RichA Guest

    Assuming the image is actually in-focus.
    RichA, Apr 24, 2013
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