Bibble 5 note: This is a Bibble 4 plug-in. It does not work with Bibble 5.
Claire allows you to use popular colour reference targets to colour correct multiple images at once. Use a Gretag Macbeth ColorChecker or a QPcard 201 in a lighting reference shot, then use the correction values from that shot to fix an entire session in an instant.
Windows, Linux and Mac versions included in the same download. ClairePRO is now available for Windows, Macintosh (Intel and PPC), and Linux. Claire is useful even if you don't have a colour reference target because it can correct white balance based on a grey card (see below).
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If you purchase this plug-in, you do so knowing it is not compatible with Bibble 5. I do not provide installation support for Bibble 4 plug-ins, and in purchasing them you do so at your own risk. Further, I do not guarantee that any Bibble 4 plug-in will be available for Bibble 5.
Isolate Colour Target
Original, handheld with JPG point and shoot camera.
Instructional videos for different situations are being produced.
Claire is easy to use and requires very little user interaction.
If you're using the same exposure for each image (e.g. doing art repro), Claire can also correct the exposure and gamma curve to match your target, so that output is entirely predictable in balance, tone curve, and colour accuracy.
An essential tool for studio, commercial, portrait and any other work where precise colour is needed -- and one-click correction is wanted.
Since Claire knows the exact formulation of the patches on your colour targets, it knows exactly how the colours captured by your camera are changed -- not only by lighting, but by the camera sensor, saturation, tone curve and other settings. And with all of this information in hand, Claire can correct all of these defects simultaneously so colours perfectly match the target. So, no matter what lighting or camera you are using, you get exactly the same colour, every shot.
Step by step instructions on using Claire.
Claire is a small plug-in that has two groups of settings: Target Analysis and Colour Correction.
This section is used when viewing the colour reference image and creating a correction analysis.
The current version of Claire supports the following colour targets:
When checked, Claire performs colour analysis based on the crop window settings and the target selection. Anytime this checkbox is checked, the analysis is available to be Applied.
Exposure indicators appear in the target squares when Analyze is checked. This allows you to check the real-world card exposure against the expected exposure of the target patches. Red indicators show overexposed target squares; decrease Exposure. Blue indicators are underexposed. You may see dark reddish blotches in your image if you increase exposure; these indicate channel clipping and inaccurate colour. Reduce exposure slightly until they vanish from the target, even if you get more blue exposure warnings.
Use Bibble's exposure slider (only!) to adjust the exposure of your target card image. If you can't adjust exposure enough, the target exposure is too far off and the colour correction will not be as good.
Click this button anytime you have moved the crop window to trigger a recalculation.
Shows the author and version of the plug-in.
This group controls the application of a colour correction analysis.
Saves the last correction calculated (even if it was calculated on another image) to the current image. This is sort of like a clipboard "paste" function.
Reminds you of the name of the file you used to create the colour correction. You can type in this field to create a notation of your own.
Activates the correction that has been applied to this image.
Restricts the correction to white/grey/black target patches only. This provides white balance correction without affecting colour saturation or chroma correction. (Maybe you like the colours your camera provides but still need to correct white balance.)
Causes the luminance tone curve of the reference target/image to be applied to the current image. This should not be used unless the current image uses the same lighting and manual camera exposure as the reference image -- otherwise the reproduced tone curve will be inaccurate.
Shows you how much the original image differs from the corrected image. Doesn't show aggregate white balance (which takes place separately from colour correction), so if your colours are already quite accurate, this may just appear to be a greyscale image.
If you intend to use Claire, don't use auto white balance. If your camera isn't capturing consistent colour from image to image, Claire can't fix it. As far as Claire is concerned, consistently BAD colour is just as easy to work with as consistently GOOD colour. It simply must be consistent for every shot in the series.
Claire has its own white balance algorithm. Let Claire manage all colour correction and you'll get a much better result.
Don't try and set white balance or adjust shadows/highlights or any other settings other than exposure on your colour target reference images, unless you're planning on making those exact same settings on all of your other images.
Claire corrects differences in colour, not absolutes, so if you change the starting point of any of your images, Claire will still correct colour assuming the image needs the same corrections as before, which may no longer be the case.
If you're not getting accurate colour, then before you start a support issue, "remove bibble settings" from both reference target and the troublesome image, then create a new analysis and reapply it. See if the problem goes away -- if it does, then a settings conflict was the cause.
You can use autolevels and/or Perfectly Clear and/or Noise Ninja without affecting Claire's analysis or correction. You can also use curves and many other tools because they are applied after Claire's processing.
Some notes on how Claire can interact with Bibble to produce results that aren't quite what you wanted.
When Claire does white balancing, it scans the image histogram to make sure that no channels will be clipped after applying the balancing algorithm. If channels would be clipped (e.g. bright blue in incandescent lighting), the image is darkened so detail in those channels isn't lost. Use an exposure slider in your favorite tool to brighten the image up again (Siggy is a good choice as it won't clip).
If you've got pure white in an image (generally due to overexposure) and yet the image needs significant white balancing, then pure white will take on whatever colour cast the balance provides due to Claire's "no clip" white balancing. Use a clipping exposure slider (Bibble's built in one works) to increase exposure to blow-out your highlights again; if you like them blown.
If your camera is contrasty (point and shoot, for example) or you have a high contrast tone curve set, Claire will probably flatten it out somewhat to restore a reasonably accurate luminance profile of the target grey patches. That's what Claire is supposed to do; it's not a bug.
Any more requests?
Forget your target? Or didn't have one for that shoot? Well, maybe Claire can do some good for you anyway.
Here's how I do it.
In the studio
At the computer
Claire is copyright 2007 Sean M Puckett, all rights reserved. Claire may not be distributed except via direct download from its homepage.