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

Search found 4 matches

by hacki
14 Apr 2018, 14:25
Forum: Cameras and Electronics
Topic: IXUS 160 Focal Plane
Replies: 8
Views: 3256

Re: IXUS 160 Focal Plane

So just for closure... I didnt go with focus stacking afterall. I did multiple exposures for noise reduction instead. It doesnt really matter if the page is perfectly in focus or not, as long as theres some sort of smooth edge to the letters. They are going to be turned into black and white anyways....
by hacki
04 Apr 2018, 13:32
Forum: Cameras and Electronics
Topic: IXUS 160 Focal Plane
Replies: 8
Views: 3256

Re: IXUS 160 Focal Plane

Alignment like this: chdkptp_20180404_153114.jpg The Autofocus on those cameras is kind of crappy anyways, which is why i'm using some direct firmware calls to position the focus servo exactly where i want it. Works like this: - Check "Enable LUA Native Calls?" in the CHDK misc. settings on the came...
by hacki
03 Apr 2018, 06:41
Forum: Cameras and Electronics
Topic: IXUS 160 Focal Plane
Replies: 8
Views: 3256

Re: IXUS 160 Focal Plane

I'm aware that sharpness decreases towards the Edges. I know what curved field and flat field lenses are. Thats not whats happening here. It behaves as if the page is angled towards the camera significantly. When i move the focus from infinity towards the camera, first the bottom of the image gets i...
by hacki
02 Apr 2018, 17:37
Forum: Cameras and Electronics
Topic: IXUS 160 Focal Plane
Replies: 8
Views: 3256

IXUS 160 Focal Plane

Hi there, I have a bit of an issue with my two IXUS 160. I'm using some undocumented deep firmware commands in CHDK to directly position the focussing motor. That way i can reliably and very precisely set the focus. While trying to find out the best settings i noticed that the focal plane does not a...