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Thread: Making a scanner with a DSLR

  1. #511
    Peter De Smidt's Avatar
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    Re: Making a scanner with a DSLR

    Quote Originally Posted by Old-N-Feeble View Post
    Don't they make dedicated grayscale digital cameras that have 3x the resolution and no Bayer artifacts?
    Probably. But they're likely expensive, and we're trying to keep the costs low.
    “You often feel tired, not because you've done too much, but because you've done too little of what sparks a light in you.”
    ― Alexander Den Heijer, Nothing You Don't Already Know

  2. #512
    Mike Anderson's Avatar
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    Re: Making a scanner with a DSLR

    Quote Originally Posted by Old-N-Feeble View Post
    Don't they make dedicated grayscale digital cameras that have 3x the resolution and no Bayer artifacts?
    I don't know, but understand one the goals here (for most of the players I think) is to not require a specialized dedicated digital camera. Then again the camera is a replaceable component in the system, so one could use whatever camera they want.
    Mike → "Junior Liberatory Scientist"

  3. #513

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    Re: Making a scanner with a DSLR

    Quote Originally Posted by Mike Anderson View Post
    I don't know, but understand one the goals here (for most of the players I think) is to not require a specialized dedicated digital camera. Then again the camera is a replaceable component in the system, so one could use whatever camera they want.
    That would be my hope! I'm planning on using whatever the best camera/lens I already have--thereby reducing the costs of the set up to just the jig or mechanism itself. Costs would be very low in this case

    --Darin

  4. #514

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    Re: Making a scanner with a DSLR

    A thought/concern just occurred to me. Do stitching programs work with monochrome images (including B&W negatives)? I ran into a serious snag in this regard--Autopano Pro, as far as I understand fit, does not.

    --Darin

  5. #515
    Peter De Smidt's Avatar
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    Re: Making a scanner with a DSLR

    I’m creating some new specialized threads for future project development, as this thread has become very long and unwieldy.

    The new build threads are:
    Camera Supports and Positioning,
    Lenses,
    Negative Stages,
    Light Sources,
    Stitching and Blending of Images,
    Cameras and Camera Control Software.
    Workflow.

    The place to complain about this project is: here.
    “You often feel tired, not because you've done too much, but because you've done too little of what sparks a light in you.”
    ― Alexander Den Heijer, Nothing You Don't Already Know

  6. #516
    Peter De Smidt's Avatar
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    Re: Making a scanner with a DSLR

    Here's a comparison.

    The following image comes from a 4000 spi scan on a Screen Cezanne. The full size file would make a print 29.6" x 36" @ 300 dpi with no resizing.



    The follwing image comes from a dslr scanner, using a d200 and a 55mm micro Nikkor f3.5 at f5.6. It was stitched with PTgui. It would make a print 32.3" x 40" at 300 dpi without resizing.



    Here are some screen captures of the files at 100% on my computer screen.

    First, the Cezanne:



    Second, the dslr scanner:

    “You often feel tired, not because you've done too much, but because you've done too little of what sparks a light in you.”
    ― Alexander Den Heijer, Nothing You Don't Already Know

  7. #517

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    Re: Making a scanner with a DSLR

    ^^^ Wow... not bad!! Now you've got me thinking I need to buy a really nice DSLR and razor-sharp macro lens.

  8. #518

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    Re: Making a scanner with a DSLR

    There was a gizmo a few years back where you put the film in a flat holder and shined light through it onto a sensitized piece of paper. This gizmo only used a single light bulb rather than complex tubes or sensors. I wonder if someone could still get one of these to work?

  9. #519

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    Re: Making a scanner with a DSLR

    I'd really like to try this with the new Sigma SD1 and a razor sharp 1:1 macro lens. But... I don't have the nearly $3K to spend.

  10. #520

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    Re: Making a scanner with a DSLR

    Great work, Peter!

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