Daniel Reetz, the founder of the DIY Book Scanner community, has recently started making videos of prototyping and shop tips. If you are tinkering with a book scanner (or any other project) in your home shop, these tips will come in handy. https://www.youtube.com/channel/UCn0gq8 ... g_8K1nfInQ

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by spamsickle
07 Jun 2009, 14:57
Forum: Scanners and Build Threads
Topic: Glass Platen
Replies: 11
Views: 10286

Re: Glass Platen

I think the part that holds the glass is the same in both versions, but he's added the side columns and platen-supporting rollers in the update. To hold the glass, there's a groove at the bottom of the frame on both sides that the glass slides into. At the bottom of the "V" there's a dowel (or somet...
by spamsickle
07 Jun 2009, 14:12
Forum: Tutorials/How-To's
Topic: Examples from my postprocessor software
Replies: 28
Views: 31396

Re: Examples from my postprocessor software

One thing they get right on the Canon compacts is that they give you a small section of the screen with 100% magnification, so you can do manual focusing pretty easily. Still not nearly as nice as a rangefinder. The Casio gives me a magnified area when I'm doing the manual focus. It might be 100%, ...
by spamsickle
07 Jun 2009, 10:21
Forum: Tutorials/How-To's
Topic: Examples from my postprocessor software
Replies: 28
Views: 31396

Re: Examples from my postprocessor software

You might want to reconsider using the smallest possible aperture. I need to confirm this experimentally, but with all the cameras I have calibrated at work there's a point where a smaller aperture stops buying you depth of field and starts degrading the image ever so slightly (or at least doesn't ...
by spamsickle
07 Jun 2009, 08:37
Forum: Tutorials/How-To's
Topic: Examples from my postprocessor software
Replies: 28
Views: 31396

Re: Examples from my postprocessor software

What cameras are you using? Those sound like DSLR features... One of my cameras is a DSLR, but the other is a cheap Casio. Even the cheap camera offers choice of shutter/aperture priority metering, white balance, and an EV adjustment. I don't know what EV stands for; I assume the E is for exposure,...
by spamsickle
07 Jun 2009, 01:08
Forum: Introductions and connections
Topic: Post something about yourself here (The Hello Thread)
Replies: 437
Views: 483744

Re: Post something about yourself here (The Hello Thread)

The first book I scanned was probably back in '90 or '91. I was interested in computer graphics at the time, and saw the title referenced in some research paper, but it was already out of print, and online used book searches hadn't been invented yet. When my job took me to Washington D.C. to staff a...
by spamsickle
07 Jun 2009, 00:18
Forum: Tutorials/How-To's
Topic: Examples from my postprocessor software
Replies: 28
Views: 31396

Re: Examples from my postprocessor software

The reason your original image is dark despite being blasted by halogens is because the automatic exposure function of your camera is calibrated to expect 18% grey. This is a useful compromise in most real-world shooting situations, and will produce exposures for most scenes which are neither too li...