Luminous Landscape Forum

Raw & Post Processing, Printing => Digital Image Processing => Topic started by: Dave Gurtcheff on January 24, 2014, 12:49:47 pm

Title: Medium Format DSLR as film scanner
Post by: Dave Gurtcheff on January 24, 2014, 12:49:47 pm

I have a collection of priceless family negatives made by my father between 1935 and 1940, all B&W 645 size, all made with a state of the art Zeiss camera with Tessar lens, Compur shutter. I have a Polaroid 120 Sprint Scan film scanner that died, with no Vendor Support anymore. I have an Epson V700 flat bed that I resorted to using to film scan, but I cannot help but think I can get better quality. I want the quality to make routine 11"x14" prints, and occasionally 16"x20" prints.
Here is my plan:
I ordered from B&H a high quality focusing rail, with Arca type quick release. I plan on using my Pentax 645D, with quick release plate, and 120mm f4 manual focus Pentax 645 lens which will go to 1:1. I have a high quality light box with even illumination. I intend to make a horizontal negative copy rig, probably using a piece of 1"x 6" wood, bolting the rail to it, and turning the light box on it's side, and fastening it to the 1"x6". I have an electronic cable release, and the 645D has mirror lock up. As a test before I ordered the rail, I set the camera and lens on my kitchen counter, and turned the slide box on it's side, taped a negative to it and was easily able to focus 1 to 1 on the negative. Fine adjustments were needed by slightly moving the camera, thus my idea to buy a geared rigid rail. Anyone tried this? I could even bracket exposures and combine in HDR software, if required.
Thanks in advance
Dave in NJ

Title: Re: Medium Format DSLR as film scanner
Post by: digitaldog on January 24, 2014, 01:18:47 pm

This is being discussed (but with DSLR) here:
http://photo.net/digital-darkroom-forum/00cKbq

Title: Re: Medium Format DSLR as film scanner
Post by: Kirk Gittings on January 24, 2014, 01:23:34 pm

Also long interest and mockups being done here-all the threads on DSLR Scanner. http://www.largeformatphotography.info/forum/forumdisplay.php?31-LF-DIY-(Do-It-Yourself)

Title: Re: Medium Format DSLR as film scanner
Post by: Dave Gurtcheff on January 24, 2014, 11:05:50 pm

Thanks all. I will check out the links.
Dave

Title: Re: Medium Format DSLR as film scanner
Post by: artobest on January 30, 2014, 06:44:34 am

If it doesn't work out, consider buying a betterscanning.com holder for your Epson and calibrating it, then scanning your B&W negs are colour positives and using only the green channel. This way, the Epson is a pretty sharp B&W scanner.