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General photography questions and answers: Discuss Colour balancing RAW images for print...I am having a few issues with the colour balance of my images when printed up at a photo printing ...
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Old 23-04-2009, 16:28   #1 (permalink)
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Colour balancing RAW images for print

I am having a few issues with the colour balance of my images when printed up at a photo printing lab, Is there something simple I am missing? The images appear to have too much green in them, do I need to compensate when using Canon DPP software?


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Old 23-04-2009, 16:55   #2 (permalink)
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Re: Colour balancing RAW images for print

The first stage is to ensure that your monitor is correctly calibrated, so you are seeing the correct colours on screen. You can sometimes do this manually, or use a profiling system such as Spyder3.

A simple way to check the basic calibration is to look at test wedges such as the one near the top of the Pixalo Galleries...

Main Index - Pixalo Photo Gallery

The wedge should appear neutral grey throughout the whole range, and also you should be able to differentiate between all the tones. If there is a colour cast anywhere in the range, you won't be seeing the correct colours in your photos.

If your monitor is OK (and good enough to display a reasonably wide gamut), the printing lab may well be at fault. Some of the high street processors don't do a very good job.
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Old 24-04-2009, 02:21   #3 (permalink)
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Re: Colour balancing RAW images for print

Colour space and also has an effect on prints. Some (most?) labs want sRGB embedded, and some have a colour chart you can download and print to check colours.

Getting colours to be consistent over the whole process from taking the shot, to viewing and editing and then either displaying on a monitor or printing is a can of worms. You have to be prepared to work at it to achieve the best results.

I'm not familiar with the Canon DPP software so I don't know what it can do, but RAW files are usually a bit flat out of the camera and do require some work to get the best out of them. However, colour casts are not normally an issue. That does sound like a calibration problem as Silkstone says.
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Old 24-04-2009, 09:42   #4 (permalink)
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Re: Colour balancing RAW images for print

Well I spent some time calibrating my monitor from the OSD and using Adobe Gamma to create a custom ICM profile, I have re-rendered the TIF from the RAW and converted to JPG in Photoshop. There doesn't appear to be a colour-cast when viewing on my monitor, I will get the photos printed again today and take the bad ones along with me requesting the new prints don't have the green colour-cast!
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