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ziplock
10-19-2005, 09:04 AM
Ages ago I read about someone who successfully converted an old flatbed scanner into an effective super-high resolution digital camera. This morning, after being awakened by a screaming infant and not being able to get back to sleep, I started to think about creating a pinhole camera using a flatbed scanner to record the image. I Google'd it and found one person who claims that several people were successful in this during the 90's but no specific information on this project. Has anyone tried this?

heyoka
10-19-2005, 09:39 AM
I'm not sure how you'd even start to go about this, but I know that scanners make beautiful lensless cameras without any modifications.

Some people are doing very beautiful and/or strange things with them, from self-portraits to scary-scary doll things. I did some floral stuff a couple of years ago: http://www.flickr.com/photos/heyoka/sets/433350/ so if you do cook up some scanner-pinholery, i would be =very= interested...

ziplock
10-19-2005, 09:57 AM
I'm not sure how you'd even start to go about this, but I know that scanners make beautiful lensless cameras without any modifications.

Some people are doing very beautiful and/or strange things with them, from self-portraits to scary-scary doll things. I did some floral stuff a couple of years ago: http://www.flickr.com/photos/heyoka/sets/433350/ so if you do cook up some scanner-pinholery, i would be =very= interested...

Those are very pretty. Did you make them by placing the flowers on the scanner glass directly?

Here's a link to what someone did with a scanner, two cardboard boxes and a simple single element lens.

http://www.elmwoodstrip.com/articles/shawnr/76.html

It's a very different effect from what you got :)

I've seen digital backs for medium and large format cameras that are basically scanners, so I figure that it will work the same way. My one concern is that the projected image will be too dim, but if what I read is true and it HAS been done then it's just a matter of figuring out what works.

I'm thinking I'll fasten the scanner to the bottom of a cardboard box, measure the focal length and mount a pinhole on the opposite end and see what that gets me. In essence, just like a paper camera, but with a scanner instead of paper.

If that doesn't work perhaps I'll need to put something on the scanner glass for the image to project on. Wax paper would probably be my first try as it's cheap and I know you can view a projected image through it.

heyoka
10-19-2005, 10:17 AM
Blimey! those are amazing! (particularly the multiples) Now I =really= want to see what you can do with a pinhole-scanner.

(and yes, I put the flowers right on the glass and either covered them with dark fabric, or did the scanning at night. It being a piece-of-junk scanner, the depth of field was only about 2mm. Anything further away from the glass dissolves into mushyblur, which can be very pretty, but is rather limiting.)

dvoracek
10-19-2005, 10:18 AM
Ya know, The Viking Lander cameras sent to Mars in the 70's was basically a pinhole aperture with a photocell that scanned across the scene and built up the image line by line
( http://history.nasa.gov/SP-425/ch3.htm )

It took quite a while to build up the image (an advantage when you have no data storage and slow transmission rate).

I recall reading a story where the imaging team took a group portrait and as the scanner passed their position they would run into a new position resulting in several images of each team member in the shot.

ziplock
10-19-2005, 01:01 PM
I found the article I'd originally read describing how one person disassembled a scanner to create a "megapixel camera" when 2000x2000 was a big deal

http://www.sentex.net/~mwandel/tech/scanner.html

He took the whole mechanism out of the plastic case and mounted it on a wooden frame. I'd like to avoid that. I think I have an old parallel scanner in the attic somewhere. I'll have to try and dig it up.

Mie
03-12-2007, 07:31 AM
I have been searching help about this topic too.

At the bottom of that page there is some information:
http://webspace.ringling.edu/%7Estaft/cameras.html

These page have some information trough web archive (site is down):
http://web.archive.org/web/20060205050520/www.scannerphotography.com/
http://web.archive.org/web/20060205054552/www.scannerphotography.com/cameras/index.html

There is some information:
http://www.treehugger.com/files/2006/01/diy_build_a_sca.php

And thats about all I could find.

I am very intrestid about everything related to this. Specially would pinhole version of scanner camera be even remotely posible or is there just too little light?

gneissgirl
03-14-2007, 12:48 AM
Maybe not exactly what you had in mind, but related, perhaps?


http://www.f295.org/gallery/main.php?g2_itemId=3165

callum moffat
03-14-2007, 06:53 PM
WASNT STAFT INTO THIS ?

MarkB
03-14-2007, 07:58 PM
Yes it was staft. I just did a quick search on his "scancam" but couldn't find the (extensive) thread. I think it was about a year ago so maybe has been archived or purged (does that happen?).

Anyway here is one thread with some discussion, but not the main one.

http://www.f295.org/DIYforum/cgi-bin/forum/Blah.pl?m-1147867707/s-7/highlight-scanner/#num7

But you might just send email to staft on f295, he would likely share info.

jvh
03-23-2007, 07:19 AM
I did some experiments with pinholes and my scanner camera. Had to make pinhole very large to get usable image. No real control over exposure time since you have little control over time of scan besides resolution setting. Aperture becomes your only real variable which is not pinhole friendly. I want to get back to this at some time. I did have better success with zone plates and posted the following:

http://www.f295.org/DIYforum/cgi-bin/forum/Blah.pl/Blah.pl?b-cc/m-1148000198/

I also just posted some new info on scanner cameras yesterday on Alt Forum - camera building.

Good luck and please post info if you pursue this further.

Mie
04-05-2007, 04:32 AM
Sad.. It seem that this project of mine wound go further if I do not manage to tweak scan speed (=explosure time). I really don't like zone plates. I am more into pinhole photography.

Thaks anyway. Next step would be to find greater control to scanner.