Vuescan 9 X32 Serial Number 13
Elis Riebow
Number of samples is similar to Number of passes. Multi-sampling is preferable as the scanner head is positioned once, which ensures that the same area will be exposed for each sample. Multi-sampling is available only on a limited number of scanners.
Number of passes is actually the number of times the scanner does a pass.
Number of samples is reading each pixel multiple times before the scan head moves to the next line.
Multi-exposure is doing a second pass at a slower time (like a slower shutter speed on your camera) to make a brighter exposure.
All of these are combined in the computer after the scan.
Passes vs Samples is set based on the scanner attached. It won't give you the option if it can't do it. Some flatbeds are really bad with muliple passes like these and the IR pass as well.
If you turn on Scan From Preview it disables the program from calculating a speed. Much like locking the controls on your camera. Usually this isn't a big deal, but with thicker slide film like Kodachrome and most of the other older slides it can be a hindrance and the results are very dark scans. I say this because slides are about the only reason to use Multi-exposure. Negative film's are usually just fine with a single exposure (scanner wise). So if a single pass Multi-exposure doesn't cut it, turn off Scan From Preview.
Originally posted 115 months ago. (permalink)
parallel skin edited this topic 115 months ago.
You would need to manually set the exposure per each pass. A few things I've learned.
If you scan a preview without setting 'Lock Exposure > RGB Exposure' it will give you an auto exposure time to work off of. You can then calculate the overexposure off of that.
The exposures in my experience are linear. i.e. if you want to double the exposure (move one stop in camera terms) you have to double the number. 1> 2> 4> 8> etc...
Depending on your hardware you may not have much latitude. (Canon FS4000US has about 3 stops, Nikon LS-2000 has about 6). Setting the exposure above a certain point doesn't gain anything.
Default Vuescan max is 11. You can type in numbers higher.
Flatbeds typically have a tougher time aligning the second pass, but if you're doing your own post processing just allow a little crop on each side and let the software do the aligning. Film only scanners seem to do a fairly good job in this regard though.
RAW tiffs straight out of Vuescan are not the same as plain tiffs, even with the same color space. Experiment to see which one works best for you.
90 months ago(permalink)
Starting out I got confused. I like Vuescan and thought the Professional version would allow me to configure the number of slides. I can't find the setting and I have found nothing in the documentation or online.
A little late to the game, but here is some more advice. I started like you multisampling but gave it up. For good exposures I could never tell the difference even when a very high magnification in photoshop. Multisampling did do a little bit of good for underexposures up to 4x. More than 4x tends to create more noise than anything else. This resulted in me going back and rescanning a fair number of images. Do some experiments yourself. I have read elsewhere and come to the conclusion myself that multisampling probably does more good in older machines.
In theory, increasing the number of samples will increase the usable bit depth. At least in my own limited trials, this did not produce a visibly noticeable difference (and it dramatically increased scan times). But there may be some circumstances where this could be important (for instance, if you see posterization in your final results, you may try increasing the number of samples to see if that helps). More information here: Maximizing Image Quality
I recently figured out how to properly scan my films with the proper colour/exposures, but my scanner is doing 2 pass scans, instead of single pass scans, and im not sure why. I dont really need the second pass, and would much rather cut down my scanning time down by half. I dont have "multi exposure" selected, and number of scans is set to 1 as well. Yet it still does 2 passes. Is this just the default for this scanner/Vuescan?
VueScan is intended to work with a large number of image scanners, excluding specialised professional scanners such as drum scanners, on many computer operating systems (OS), even if drivers for the scanner are not available for the OS. These scanners are supplied with device drivers and software to operate them, included in their price. A 2014 review considered that the reasons to purchase VueScan are to allow older scanners not supported by drivers for newer operating systems to be used in more up-to-date systems and for better scanning and processing of photographs (prints; also slides and negatives when supported by scanners) than is afforded by manufacturers' software.[7] The review did not report any advantages to VueScan's processing of documents over other software. The reviewer considered VueScan comparable to SilverFast, a similar program, with support for some specific scanners better in one or the other. Vuescan supports more scanners, with a single purchase giving access to the full range of both film and flatbed scanners, and costs less.
My comment isn't about vuescan and Silverfast
But for my use, scanning many dias images form 1960-1980 I scan at 1200 dpi. I actually think Epson Scan software works better than vuescan. And easy, a simple as set the options you like save as a scan profile hit prescan check everything looks as expected. Hit the scan button wait 2 minutes, open cover, replace the 4 images close lid, hit scan without doing anything else and repeat. For my setup vuescan did a bad job with cropping. I'm using i Epson v600
I'm surprised the author dissed Epson Scan for its auto-cropping. I happen to be scanning some older negatives at the moment, and to select custom crop, in the Preview panel select "Normal" instead of "Thumbnail" and you'll see your strips of film scanned with no separations. Then just crop the first frame as you like (presumably showing a bit of frame edge), then click on the copy button and use the copied frame to crop your next frame. Repeat for all your frames. If you have auto-numbering enabled, the first frame you crop will be the first-numbered frame in your scans. Just as you wouldn't choose auto-exposure for your scan settings, why would you leave cropping to the program?
I am using a Vuescan trial, the dust reduction is in no way comparable to the Epson Digital ICE.
VUEscan-rear is a fantastic tool that helps eliminate blind spots on large vehicles so that drivers can detect obstacles when reversing, including cyclists and pedestrians. This helps them avoid collisions and limits the number of accidents that occur, especially in busy urban areas where pedestrians and cyclists are at more risk.
VueScan for Mac is a software package designed to take the place of the software that comes commercially packaged with scanners. It provides a very easy-to-use and easy-to-learn interface for scanning photos and documents into your system. It also works with a great number of older scanners that may not have supported software that works with more modern iterations of the operating system.
Color adjustment features: When you scan something into VueScan, it has a number of options that allow you to adjust the color of your scanned image. By selecting a preset from a drop-down menu, you can easily adjust the color quality of your image. You can also adjust things manually if you want to get more particular about your final files.
You should label each figure with, at minimum, your own figure number and the source of the figure (using a proper citation, e.g., Smith et al., 1990). If you wish to provide a caption, be sure it is located rather obviously in association with the figure in question. I would suggest putting the title of your topic at the top of the page for easy reference. As before, do not combine materials from multiple topics. If you are submitting separate figure files (e.g, one per image), be sure the file labels are clear (something identifying which topic and which figure number the file contains).
Exporting and submitting your illustration page(s). Please save the final product as a pdf if at all possible. On a Mac, the most reliable way is often to use the Print command but then select Save as PDF from the PDF button at the lower left of the Print dialog. On Windows machines, this can be more difficult, depending on what tools have been installed on the machine. If you are stuck saving the illustrations for a single topic as separate files, please indicate the relative page numbers in the file names (e.g., TopicNameFigs1.pdf, TopicNameFigs2.pdf, etc.).
I will combine the pdfs within InDesign or Acrobat, depending on what kind of files I am given, and where I can also generate page numbers. So don't make the pages reach too near the top or bottom margins so we have room to add the page numbers.
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