![]() * Output: 16-bit grayscale TIFF (image size about 140MB)ġ) Is infrared scanning useful for B/W? I've read that it's useless, but cannot find a good advise on this. * Scan time per photo: 15 minutes (Each image is scanned three times for multi exposure and infrared) * Multi exposure: each image is scanned twice for the dark and light areas * Crop inside: 10% inside the automatic crop border (this is the area that is used to measure the right lightning) * Crop outside: automatic crop with 5% (extra border to make sure the whole negative is scanned) I scan on an old Ubuntu desktop which runs through the day, and will organize the images later on my mac with Aperture, although I might change to Lightroom if that's a better choice (considering its support for RAW DNG). When enabled, this will perform two scans, one at a short exposure and one at a longer exposure. I suppose that in a year or so - looking back - it doesn't matter that much, but considering the time it takes I don't want to take the risk. VueScan offers a 'MultiPass' (Multi-Exposure) option under the Input Tab. I don't want to make a decision that I regret later, so I'm scanning at the highest resolution at the moment. need raw files anyway this shouldn't bother you for the moment. present something with your vuescan settings is wrong, but hence you. you pull up the gamma you should see into the shadows. For color scans the scan time is similar, but the file size triples. they should be very dark in your image editor (Gamma 1.0 space) but if. If I scan a 35mm negative at 6400spi (or dpi or ppi whatever you call it), it takes 15 minutes for each picture, and at 16bit it takes up 140MB. I've bought an Epson Perfection V700 Photo scanner, have scanned several negatives already, and want to make sure I make the right decisions. ![]() If I start with slides and color negatives, I'll probably ask another question or two. This question is about black and white negatives. I have about 1000+ b/w negatives, plus thousands of slides and color negatives, so I have to make decisions about how to get this done. Multiple-exposures allows to penetrate dense film better (if scanners allow to control this), but that is something different, and is usually not required for negative film.I want to scan my old b/w negatives. This scanner is compatible with multiple film types, so you can scan. A TWAIN interface is not provided, it instead accesses the scanner hardware directly at low level. VueScan can often retrieve the full bit depth of data from scanners that otherwise only output 24 bits. ![]() Multiple passes requires accurate repositioning of the multiple scans (which not all scanners can do), if the scanner hardware doesn't support multiple samples. and pixelate, as well as adjust the exposure, contrast, saturation, sharpness. VueScan can often multi-scan with scanners that do not support this, using multi-pass scans. This should improve image quality, provided that the film doesn't move during the iterations (because it takes 2x, 4x, 8x, or 16x longer to expose). Re-previewing with 'lock exposure' turned off reduces the scan. defects' check box doesn't actually show any red blobs denoting defects, even though white dust marks are visible in the RGB scan. stepper motor is different) and sometimes IR cleaning doesn't work: the 'IR. To be clear, the number of samples does not move the scan head, and only removes electronic noise by averaging (1/4th of the noise at 16x sampling). time is increased by about 100 (you can hear the 'note' of the scanner's. I know that SilverFast can for Vuescan, open your scanner, open Vuescan, go to the Input tab and see whether there is a function for multiple exposure (not "Number of samples" - this is not the same function). Quote from: Mark D Segal on September 17, 2014, 09:31:11 am -Yes, the scanner is capable of multi-exposure provided the software you use can operate it. Heat could also be a factor to a lesser extent. With the moderately priced flatbeds, the softness during multi pass scans is usually caused by the fact that the scanning head is unable to start each pass at exactly the same position. This increases the dynamic range and can reveal more shadow detail. >but I suspect that the film is moving (due to temperature change) between the scans. With multi-exposure, two scans are performed using different exposures, and then combined into one image. Raw & Post Processing, Printing > Digital Image Processing
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