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Keytarjunkie
20-Oct-2013, 15:55
Hey all. I've been shooting 4x5 for a few years, and have always wanted to make a scanner camera. Ya know, low budget, digital, lo-fi...so a few weeks ago I wound up getting a cheap Gundlach 8x10 camera, circa 1910's or so, similar to a Korona.

I disassembled EVERYTHING, repaired the bottom of the camera that the struts had ripped out, reconditioned the wood, scrubbed the silver (though on many parts, the silver had worn off), cleaned out all of the cobwebs, etc. The bellows are light-tight and the focusing works pretty well. I had to drill a larger hole for the enormous Kodak 12" f/4.5 Anastigmat lens. Here it is after I cleaned it up, next to my 4x5

http://25.media.tumblr.com/efe59a0dd4eba72ffb97ec2949adfa01/tumblr_musu4uFQ4K1qfj296o1_500.jpg

Here's one of the first images I've taken with it, a self portrait.

http://24.media.tumblr.com/715ca182091b5165b9cb1a3685894e52/tumblr_muzjakRx5J1qfj296o1_500.jpg

I'm already on my second scanner, and I'll probably be going through a few more (fortunately they're always about $5 on ebay!!). I think this scanner was used too heavily before I got it...it leaves these lines on the image. Very annoying. Currently I have disabled the scanner light, and I'm just scanning the ground glass. Eventually I'd like to remove the scanner's pinhole lenses and scan the light directly - but apparently there's some kind of moire pattern that happens when you do that. Scanning the ground glass makes it much easier to focus and requires very little destruction, so it might be the way to go.

Scanning is weird...yes, digital is instant, but in this case, the process of making the image is not. It's similar to a long exposure, but instead you're waiting for one side of the image to be scanned. As the image is being created, you can of course manipulate the scene...there are some great examples of people moving for scanner photographs like this one (http://www.flickr.com/photos/rolfkoster/7337671758/in/pool-scannercameras/). At this point I am focused on getting the camera to produce a better image...maybe once it looks a little better, I will start experimenting with movement.

If you don't mind, I thought I would add to this thread as my experience with the scanner camera continues. Apologies if this is the wrong forum for this, it seemed like the best place.

Lenrick
20-Oct-2013, 23:07
Please keep us updated, I find this very interesting.

I tried to build my own 4x5" scan back not too long ago. But I had to prioritize work and family, so it is still not finished: http://www.largeformatphotography.info/forum/showthread.php?79582-DIY-4x5-quot-scanner-back

And a link to a paper, in case you have not seen it:
http://www.cs.ubc.ca/~heidrich/Papers/EI.04.pdf
http://www.cs.ubc.ca/~heidrich/Papers/EG.04.pdf

Good luck!

Mark Sawyer
20-Oct-2013, 23:35
Have you tried removing the ground glass and scanning the aerial image?

coisasdavida
21-Oct-2013, 02:51
I was able to do this using those Canon slim scanners, LIDE maybe, after seeing a website from a fellow that got a grant from Audi Foundation to do this. If you try Scanner Camera Audi on Google, I think you can find it.

Slim scanners have sensors as wide as the page they scan. You have to remove the optic fiber strip and the LED lens in order to be able to focus your lens onto to the sensor

I was able to get a 200MP image with it!

Keytarjunkie
21-Oct-2013, 11:29
Please keep us updated, I find this very interesting.

I tried to build my own 4x5" scan back not too long ago. But I had to prioritize work and family, so it is still not finished: http://www.largeformatphotography.info/forum/showthread.php?79582-DIY-4x5-quot-scanner-back

And a link to a paper, in case you have not seen it:
http://www.cs.ubc.ca/~heidrich/Papers/EI.04.pdf
http://www.cs.ubc.ca/~heidrich/Papers/EG.04.pdf

Good luck!

Thanks! I hadn't seen that before.


Have you tried removing the ground glass and scanning the aerial image?

Not yet. Doing so would involve cutting out the slit that the sensor sees through in its plastic holder. I have to widen it to allow non-direct light to hit it. And the results I've seen have been much worse than that few examples I've seen on ground glass. I'm not ruling it out though...that's originally how I wanted to do this and it seems much more efficient than just scanning the ground glass. I think they managed to solve the moire-like-pattern problem in those papers Lenrick linked to.


I was able to do this using those Canon slim scanners, LIDE maybe, after seeing a website from a fellow that got a grant from Audi Foundation to do this. If you try Scanner Camera Audi on Google, I think you can find it.

Slim scanners have sensors as wide as the page they scan. You have to remove the optic fiber strip and the LED lens in order to be able to focus your lens onto to the sensor

I was able to get a 200MP image with it!

Yes, I've read all about that project on the guy's website. I think I can do better, but we'll see! I'm using a LiDE 20. The first one I broke trying to get the sensor out of its plastic casing...removing the light and the pinhole lens array was a piece of cake, though.

Here's a new one from today. It's extremely difficult to stand still for the entire scan...I suppose that's why they used to have braces in the 1800's when exposures were always sloooowww.

http://24.media.tumblr.com/edc8c65c1c9bab1d0d71d0c8f893efec/tumblr_mv16uu9NQe1qfj296o1_500.jpg

SergeiR
21-Oct-2013, 12:05
Here's a new one from today. It's extremely difficult to stand still for the entire scan...I suppose that's why they used to have braces in the 1800's when exposures were always sloooowww.

different kettle of fish. You cant blink in scanning. You can blink with slow emulsions.

pasiasty
22-Oct-2013, 02:52
different kettle of fish. You cant blink in scanning. You can blink with slow emulsions.
Have you watched Kubrick's 'A Clockwork Orange' ;) But you actually can blink all the time but the single moment while your eyes are being scanned.

Keytarjunkie
10-Nov-2013, 08:20
A few more recent ones. Same crappy scanner, different streaks this time! Weird.

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