• 7 Posts
  • 31 Comments
Joined 7 months ago
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Cake day: April 29th, 2024

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  • Hi!

    I’ve only ever managed to get the lide30 to play nice. I have destroyed one 110 and two 220-scanners in my efforts to build a more versatile rig.

    What happens if you drop the prism back in?

    I’ve also speculated about there being som calibration and automatic gain control going on in these newer models. I believe it could be used to normalize the values coming off of the individual sensor segments.

    On my latest attempt at a 220 scanner, I actually built a small dimmable LED circuit that I attached externally to try and influence the calibration I thought was happening, but there was a disappointing lack of results. Come to think of it, I still have that rig laying around somewhere, and the experiment may have been flawed, I’ll have a look next time I’m at my workshop. I’ll let you know what I find.

    I know that rig is at least functional, as objects placed directly onto the glass renders crude shadows on the scans.

    That’s the long answer, the short answer is no, I don’t have any tips, maybe aside from working on fooling the possible calibration somehow.



  • Thanks!

    Cabbage covered a bunch of the process below. In this case, I had a neutral grey background and laid on my back, sticking my hands into the view of the camera. And while watching the scan progress on a screen I moved my hands around until I got this.

    It’s a fairly cumbersome process, as each scan takes a couple of minutes and any unintended motion gets captured as well. Out of the 40 or so attempts, this one is the cleanest, both with regards to unintended motion, and with the pose coming out the way I wanted it to.





  • Thanks! I appreciate the feedback. I don’t crop shots done with this camera, I want to preserve the organic borders and learn to live with what is captured without messing too much with it.

    However, I halfway agree with your observation, on a small screen this really could do with a tighter framing, or maybe bringing the model closer to the camera. But in a larger print (this is one of two shots Ive printed in 80x80 cm), the airy composition works really well.

    I refuse to ignore you!








  • I haven’t really considered that, I’m assuming the (in this case) vertical sampling is ‘global’, as in the values at each sensor site is locked at the same time and then read out from the serial bus.

    If there was a delay, stuff like fluorescent lighting would read as a moire pattern, but I’ve only ever encountered streaking/linear distortion in those circumstances.

    I think the ‘griddyness’ or general sense of direction in the water is purely a function of how water moves and not a result of readout delay.

    I’d love to be proven wrong, though, so if I can do some experiment to determine either way, I’m all ears.