How to Create a Self-Made Smartphone Scanner Using Scrap Materials


In this article, I’ll show you how to create a simple, improvised smartphone film scanner.

Once, I had the desire to scan film, but it was already midnight, so I decided to use an old Soviet enlarger instead. I was surprised by the results.

Credits: damekkoneko

However, I wanted to improve the results:

- Increase the resolution
- Use a smartphone camera
- Get rid of the vignetting associated with condenser enlargers
- Have fun with color balance.

Later, I made a smartphone film scanner using scrap materials (boxes of old CDs) and LED lights. The design of the device is as follows:

White, green, and blue LEDs are located at the bottom of device. The brightness of each color group can be increased or decreased. LEDs are stuck on the frosted glass, and film is pressed against the glass. On the stand is a smartphone, from which you could see the negative through its camera.

I was able to solve the problem on the blue-tinted photos. Negative film has a red substrate and the positive picture from it is always blue, so if you use the auto white balance function of the camera, the red and green colors will be removed.

The results:

Credits: damekkoneko

geschrieben von damekkoneko am 2015-01-09 in #gear #tutorials #diy #35mm #lab-rat #scanning #tipster #self-made #smartphone

5 Kommentare

  1. mafiosa
    mafiosa ·

    Smarty-pants! Great idea. Your results speak for themselves.

  2. damekkoneko
    damekkoneko ·

    @mafiosa thank you :)

  3. lelio87
    lelio87 ·

    Hello! A question regarding the green and blue leds, what exactly would they serve? Would not white leds suffice? I love the idea, I'm about to apply it as soon as I can.
    Greetings from Mendoza, Argentina.

  4. damekkoneko
    damekkoneko ·

    @lelio87, Hello :)
    The green and blue leds are compensating a colour of the colour negative film substrate (it's red). It's for RGB color model.
    White leds provides narrow light spectre (red, green and blue), film substrate cuts a blue and green light, so you need some additional light to compensate this loss.

  5. lelio87
    lelio87 ·

    @damekkoneko Gracias! :)

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