Colorperfect Vuescan

Step by step tutorial. For scanning the best out of your films. To get the best colours possible for. Colour negative and slide films with. On the first screen, click “More”. Install and start Vuescan. On the “Input” tab, check if your.

  1. Let's suppose that i have scanned color negative in Vuescan to image with linear gamma and without color profile in it (as described in ColorPerfect FAQ). Before process it in ColorPerfect i need to open image in photoshop. When i open image in photoshop i see a dialog box which purpose me to leave image without profile or assign profile.
  2. ColorPerfect will rectify this. Open the image in Photoshop, assign a suitable color profile and set up ColorNeg mode's Gamma C setting accordingly. Even though ColorPerfect's ColorNeg mode was primarily developed to process color Negatives it is also ideally suited for black and white ones. Detailed instructions for different types of scanner.

Thus far my approach to scanning color negatives has been to play with it until it looks reasonable. It was time to sit down and figure out a better method.

The thing about color negatives is that there is no reference for what the image is “supposed” to look like: not only is the film a negative, it’s got the orange mask. But one thing that is certain is that I want to start with as faithful a representation of the film image as possible.

I seem to have worked out a method. I make no claim that this is the best of all possible approaches, or that I won’t figure out something better later, but it seems to work.

I’m using a Nikon Coolscan 5000, with VueScan software to do the scanning. VueScan does a good job, but has one of the worst user interfaces I’ve ever used; figuring it out is difficult and scanning with it takes a few times longer than it should, so it’s my hope that this will help others trying to do the same thing.

One thing I found scanning slides was that setting “Media” to “Slide film” in VueScan is never, ever what you want when scanning slide film. With this setting, VueScan adjusts your scan’s colors to “compensate” for the film’s characteristics, neatly defeating the purpose of scanning it in the first place. With negatives it’s much the same: choosing “Color negative” will make VueScan do terrible things to your pictures, based on “profiles” it has for various types of film.

Obviously we don’t want this, or any other behind-the-scenes adjustments, so the first thing to do is set VueScan’s “Media Type” to “Image,” same as we use for slide film. Of course, this means VueScan will no longer invert the negative or remove the orange mask, so I’ll be doing that myself later.

VueScan also doesn’t seem to be very good at finding the edges of the frames on a strip of color negative film, at least in “Image” mode. I found it necessary to preview a frame and adjust the offset until it lines up properly. Unfortunately, VueScan makes you guess at the adjustment and re-scan the preview until you get it right.

Next, we have to make sure VueScan doesn’t do anything to the scanned image that we don’t want. It supports saving of “Raw” files—and those files are actually just TIFF images that can be loaded into any image editor. (VueScan’s Raw mode should not be confused with digital camera RAW files, which are completely different and wholly unrelated.)

To get VueScan to save the Raw file, go to the Output tab and check the “Raw file” option. You can disable the saving of regular (processed) files, too, since those won’t be useful.

Setting the filename to “@.tif” (which is the default setting for the processed files) gives your Raw files the normal auto-generated filenames that VueScan normally uses. “48 bit RGB” gives you 16-bit-per-channel TIFF files. Another option is 64-bit RGBI, which saves the infrared channel as a fourth channel; this could be handy if some other program could do the infrared cleaning, but I’m not aware of any.

In order to get VueScan to apply its infrared cleaning (Digital ICE equivalent) to the Raw scan, you set “Raw output with” to “Save,” in a breathtaking example of user interface obscurity. (Setting this to “Scan” saves the image as it’s being scanned, before the cleaning takes place.) The “Raw save film” option apparently tells it to apply its color adjustments to the Raw output as well—good luck figuring that out without the manual—so we obviously want that turned off.

Now, what we’re getting is an image with none of the unwanted corrections, but with the infrared dust-and-scratch cleaning applied, in TIFF format, not gamma-corrected (gamma 1.0, or linear), and with no color profile attached.

I enable Multi-exposure mode in VueScan’s Input tab, to ensure that the full range of the negative is captured in the scan.

With all that set up, scan the image. The result will be a negative image that still needs to be corrected before you can work with it. You can batch-scan a series of images this way before moving on to the next step.

Colorperfect Vuescan

Load the image into Photoshop. (You can do equivalent steps in any reasonable image editor, of course.) First, because our raw scan uses linear gamma, we need to apply a gamma correction. You can do this by assigning a linear (gamma 1.0) profile and converting to Adobe RGB or some other working space. If you don’t know what that means, follow the instructions in the next paragraph instead.

Assign the Adobe RGB profile (Edit → Assign Profile), regardless of VueScan’s output color space (the output color space doesn’t apply to Raw output). Now open the Levels adjustment and change the gamma. The middle of the three numbers is the gamma setting. What value to enter is a matter of taste; 2.2 is standard, but the result may be too bright in the shadows. 2.6 gives reasonable results. Unfortunately you can’t see what it will look like until you complete the next few steps, but you can revert the file and start over if it’s not right.

Now, select Image → Adjustments → Auto Levels. This will remove the orange mask by “stretching” the color channels to both ends of the light/dark scale. You can accomplish the same thing manually in Curves or Levels, by moving the black and white points in each color channel to the end points of the histogram. If you want the purest result, you can set the white point using the unexposed film base (you’ll have to scan something that has clear film) and the black point to the darkest part of the exposed film. That’s a more complex method and I don’t think it’s necessary, but some people prefer it.

Finally, Image → Adjustments → Invert will invert the image into a positive. At this point we have a corrected, positive image, but it probably won’t look exactly “right.” Use Curves to apply a contrast curve to taste—the shadow tones in particular may need substantial darkening to restore normal contrast to the image. Negatives have a lot of dynamic range.

Save the image and you’re done. Further adjustments—color correction, sharpening, etc.—can be done in Lightroom, or right in an image editor like Photoshop (I prefer using Lightroom because it edits non-destructively). You can automate everything above using Photoshop’s Actions, once you determine an appropriate gamma value to set.

I haven’t applied any further color correction to the above image. I think this is a decent example image because any automatic color correction is unlikely to adjust it in a way I’d want, given the weird nighttime street lighting.

Scanned images prepared this way look much better than the normal, processed output from VueScan. Ideally, the scanning program would do exactly the above steps, no more and no less, automatically, but we don’t have ideal software.

Video tutorial on increasing the quality of your slide and negative scans from VueScan Professional with ColorPerfect! Find out more about how to scan with VueScan. ColorPerfect processes scans with color integrity and gives unprecedented flexibility in creative image editing. To harness the full potential of our Photoshop Plug-in it's important to obtain image data that has been subjected to as little processing as possible (RAW data). Unity webrtc. The following video tutorial gives a step by step explanation on how to achieve this with VueScan Professional.

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VIDEO TUTORIAL TRANSCRIPT:
Using VueScan Professional and ColorPerfect

In this video I'd like to illustrate how to create linear scans using Hamrick Software's Vuescan as is required when inverting negatives with ColorPerfect's ColorNeg mode. In case your copy of Vuescan is currently in guided mode you need to switch to advanced mode. Once in advanced mode you need to click the more button to gain access to the more advance features. Don't be alarmed we are not going to use all of these. We just need to configure a handful of options on both the input and the output tabs.

Settings on Vuescan's input tab

Let's start with selecting our scanner. I have a Nikon Coolscan 9000 multi format scanner connected to the computer so I choose that. Next set the media to color negative and after that select 48 bit RGB under bits per pixel and change the resolution of your scan. I chose 4000 dpi as my scan resolution as I am going to scan for archival purposes and 4000 dpi is the maximum optical resolution my scanner is capable of. This completes the mandatory settings on the input tab. There are a few other settings that can be used when scanning negatives using film scanners - for example multi sampling or analog gains and those are discussed on our web page on using Vuescan for ColorPerfect.

Settings on Vuescan's output tab

So let's switch to the output tab. On the output tab make sure that all checkboxes other than RAW file are off. This means that Vuescan is going to write the data it gets from the scanner directly into a Tiff file and we will have to set up what kind of a Tiff file this is going to be. You need to choose either 48 bit RGB or 64 bit RGBI in case you would like to get an additional channel with the information captured by the scanner's infrared light source. In most cases 48 bit RGB will be fine.

Removal of dust and scratches (part 1)

If your scanner has an infrared light source which can be used in algorithms designed for the automated removal of dust and scratches you can use Vuescan's dust and scratch removal feature. In order to do so you first have to change the value for RAW output with from scan to save because otherwise the infrared cleaning will not get applied to your RAW scans.

Vuescan's DNG output format (don't use it)

When creating RAW scans for ColorPerfect make sure that you do not scan in the RAW DNG format offered by Vuescan. If you previously scanned a lot of files in the DNG format that is no problem. Our auxiliary program MakeTiff allows you to convert such DNG files to Tiff files that are suitable for processing with ColorPerfect's ColorNeg mode. The difference between a DNG file and a Tiff file simply is that a Tiff file can be opened in Photoshop without any mandatory processing.

Removal of dust and scratches (part 2)

Since I mentioned the automated removal of dust and scratches let me show you how to set that up. You will find the according options on the filter tab so we can set infrared clean to either light, medium or heavy. For the image at hand I'm going to choose medium.

Color Perfect Vuescan

Performing the pre-scan

This completes the set of options we can choose in Vuescan so let's perform a preview scan. While what we see in the preview area is already inverted the final result - the RAW scan or linear scan - will not be. It will still be in color negative form as we intend to invert it using ColorPerfect's ColorNeg mode. In the preview area we can set up the frame we would like to scan.

Performing the actual scan

Having made this selection just press the scan button.

Saving your settings in Vuescan

Colorperfect Vuescan

You can save your settings used in creating this scan and re-apply them to future scans. Just choose file > save options > linear scan. In the future we could always use the load options feature and re-apply our linear scan settings file. This is really all there is to the basics of creating linear scans using Vuescan.