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Photo Forum / Film Photography / Medium format / October 2004Q For the scanners
Just got into medium format and previously scanned my 35mm negs on my Canon 5000 no problems. This particular scanner however does not hold 6x4.5 negs so as an experiment I cut a neg down to 35mm size and scanned as usual. This film was also C41 processed. It a nutshell everything appeared very blue and only with a lot of correction was it resolved. I used fuji NPH400. Is there any explanation for this as I am now somewhat reluctant to go and purchase an epson scanner with medium format facility. Do more sophisticated scanners identify the type of film used? regards Mike de Velta >Just got into medium format and previously scanned my 35mm negs on my Canon >5000 no problems. This particular scanner however does not hold 6x4.5 negs [quoted text clipped - 6 lines] >regards >Mike de Velta It takes a little practice and experience to scan negatives. Quite often the scanner driver gets in the way. The drivers on the low end models (eg the Epson flatbed that you might be thinking of) leave much to be desired. One option is to check out VueScan by Ed Hamrick, which lots of folks swear by. Another is Silverfast. Both of these have been adapted to dozens of popular scanners. VueScan is cheap, klunky, and very powerful. Silverfast is more expensive but with a much prettier user- interface than VueScan. With a decent scanner driver, one simple approach is to scan negatives as positives and invert in the scanner driver. Dane Kosaka shows how it's done with NikonScan: <http://www.marginalsoftware.com/LS8000Notes/three_easy_ways.htm> Personally, I've been scanning color negative film for years, and never had any use for film-specific "profiles". Specific suggestion with regard to your "blue scan" problem on your Canon 5000: try turning off auto exposure and adjusting the histogram manually. rafe b http://www.terrapinphoto.com > Just got into medium format and previously scanned my 35mm negs on my Canon > 5000 no problems. This particular scanner however does not hold 6x4.5 negs [quoted text clipped - 4 lines] > an epson scanner with medium format facility. Do more sophisticated scanners > identify the type of film used? I've had no trouble with the ultrageneric "slide" and "color negative" settings on the Nikon 8000. But people who know all sorts of gobs of stuff have special "profiles" for different films. Wild guess follows. Your problem may be that your software may look at the unexposed area _between_ the frames to figure out the color corrections to apply, and if you cut down a 645 neg, you wouldn't have those areas. David J. Littleboy Tokyo, Japan >Wild guess follows. > >Your problem may be that your software may look at the unexposed area >_between_ the frames to figure out the color corrections to apply, and if >you cut down a 645 neg, you wouldn't have those areas. That would be my theory - either the gaps, or the area around the sprocket holes. To the OP - try slide film. Since it has no colour base, if this is the cause of the problem, it should go away. Did you make sure to cut a calibration notch/square in the same place in your holder? If not, the scanner will miscalibrate and produce problems similar to what you describe. Of course, even if you do get the calibration right, it can still produce the problem but at least you have helped eliminate one of the possible causes ;) I know the Canon 9900 series and all the Epsons require this, so I imagine your scanner does too. Doug --- Doug's "MF Film Holder" for batch scanning "strips" of 120/220 medium format film: http://home.earthlink.net/~dougfisher/holder/mainintro.html Woops. I initiially misread your message and now see that you cut down the negative, not your own holder. Sorry for "the reply that did not apply" ;) Doug --- Doug's "MF Film Holder" for batch scanning "strips" of 120/220 medium format film: http://home.earthlink.net/~dougfisher/holder/mainintro.html |
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