Nikon D70 as slide copier

Discussion in 'Nikon' started by Axel Kurth, Apr 6, 2004.

  1. Axel Kurth

    Axel Kurth Guest

    I had the following predicament, lots of slides and
    no slide scanner, so I took a chance hoping on the capability
    of the Nikon D70 and took the money which I had allocated for
    a Slide scanner and spent it on the D70.
    ok here the preliminary results.
    D70, a 50mmf2 MF lens, the PB-4 unit with a PS-4 slide coy attachment
    and the light source of my flatbed scanner slide attachment.
    30 slides approx. 1 hour inclusive fine tuning of results on the
    computer
    with the Nikon editing software included with the camera.
    that is half the time it would take me with my scanner.
    Results, printed with a Canon 6000 full page excellent,
    as comparison I had a picture taken at the same time of the
    same subject with my now sold Coolpix 995 also same size
    printout could see no difference.
    The problem I have come against is the 1.5 field of view crop
    I need to try with other lenses to overcome this.
    I hope someone will continue this test more professional using
    a 4000dpi slide scanner.
    As fallout to this project I have gained a fantastic Camera
    which goes well with my F3 and F100
    smiling from cheek to cheek
    Axel
     
    Axel Kurth, Apr 6, 2004
    #1
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  2. Axel Kurth

    Alan Browne Guest

    So you end up with a 3000 x 2000 image of the slide, assuming you got
    the crop and focus right, for a 6 mega pix image where a 4000 dpi
    scanner would have gotten you a 5670 x 3780 image (21 Mpix). With a
    5400 dpi scanner (DSE 5400) would be closer to 35 Mpix...

    From there how large do you intend to print? With your camera you
    should be good for 10 x 6.7" @ 300 dpi or 15" x 10" at 200 dpi printed.
    Not bad at all if that suits your needs, esp. of the camera also suits.

    Cheers,
    Alan
     
    Alan Browne, Apr 6, 2004
    #2
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  3. Axel Kurth

    Roy G. Biv Guest

    You don't need any other lenses. From experience I can tell you that with
    the bellows, the 55mm lens, and some experimenting you can obtain a full
    frame copy of your slide. If you are really, really determined I believe you
    can do better than six megapixels by shifting the slide in the PS-4 and
    using some panorama stitching software. I've never been that determined.
    Hope this helps.
    Sorry but due to spam I shall not provide a valid e-mail address.
    Please reply to group with questions or comments.
     
    Roy G. Biv, Apr 7, 2004
    #3
  4. Axel Kurth

    ThomasH Guest

    ....and you end up with endless trouble with color balance and
    exposure and the sick NikonScan and its little helper Vuescan.
    I was always puzzled about the exposure: Why not to use the
    very same exposure algorithm and method which is being so well
    established in their cameras and is considered superior?

    The untold Mpixes provided from scanner is partly an illusion.
    At such magnifications you will see grain, noise, surface
    particles and imperfection. Massive software postprocessing,
    like ICE+GEM are a common practice. I think that using a
    DSLR for "slide scanning" might be a pragmatic solution
    providing good results for many common applications. For
    example for web posting: 1280 pixel width is probably the
    largest image used nowadays.

    Thomas.
     
    ThomasH, Apr 7, 2004
    #4
  5. Axel Kurth

    Alan Browne Guest

    Web posting is not the end all and be all of photography. If it were,
    then 2 Mpix cameras would more than suffice.

    See my [pic] post of yesterday and DL the (enormous) JPG that is there.
    Yes grain shows, but so does detail that a 6mpix phot simply will not
    have.

    From the above ref'd image I reduced to 4x6 size to print, made some
    level adjustments and then re-sized (from the large TIF again) for a
    very sharp, detailed and well saturated 7x10 print on my rather ordinary
    Epson 785 printer. That result is grainless/noiseless unless one has
    their eye within 6" of the photo (I can still focus that closely). That
    is much closer than the normal viewing distance for the photo (about 18
    - 24" in this case).

    While the photo in question is not interesting enough to print at a
    larger size, there is little doubt in my mind that it would print very
    nicely at 24x16 with no perceptible grain/noise at the approriate
    viewing distance.

    Also not discussed is the 'replication' effect of copying slides with a
    digital camera. There is always loss, and much less loss than a direct
    scan (even at 6 mpix) would entail on a good quality (14 bit/channel)
    film scanner. To be sure, the 'crop' factor of the digital camera is
    even a benefit as it removes some of the corner sharpenss/chromatic
    aberation issues, but it is still lossy compared to a good scanner.

    The D70 has a sensor resolution of about 35 lp/mm (some loss due to the
    bayer pattern) which is somewhat lower than the resolution of a Nikon
    4000/5000 or Minolta DSE 5400 and other 'good' scanners

    If the user above is satisfied with his 'full page size' print, then
    that is all that he needs. But to claim it is as good as a good scanner
    can produce is exageration.

    Cheers,
    Alan.
     
    Alan Browne, Apr 7, 2004
    #5
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