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ICE Color 1.4 - User Guide and FAQ
Screenshots - More Details
Level and Gamma correction
Level and Gamma correction is very flexible instrument very often giving good results. Moreover, it very simple to use.
Need to add come comments about technology, how is working Level and Gamma correction. Level and Gamma correction realized as add-on above Color Space Warping. Self this is window do nothing with original picture. It only makes custom tuning of the basis colors. Real result of applying level and gamma correction can be visible only after using Render or Preview.
Combined channel store sum of red, green and blue all channels histograms. It's possible to tell, what this is channel for white color.
Some time fields showing Minimum input value, Gamma, Maximum input value etc, for combined channel can be empty. It's happened due to this value for red, green and blue are not identical.
There are different strategies for creating good level adjustment:
- For beginners - auto correction
- Correction dark pictures
Need to press Combined - Min/Max and Combined - Gamma.
- Correction dark pictures and pictures with wrong color balance
Need to press Separated - Min/Max and Combined - Gamma.
Also is possible to use another combination.
- For advanced users - manual correction
It's possible to change any value manually: by editing value in the text fields or by moving small triangles below every histogram.
Hints
- Level and gamma adjustment is good wish for the first step.
- Do not try add multiple colors immediately. Do it step by step:
- Add color conversion
- Make preview. If result is become better goto 1
- Try to change source or destination colors for added color manually.
- Make preview. If result is become better goto 1
- Delete this is color conversion. Try to use another colors
- Do not use almost identical color as source color. For example:
(100, 120, 150) -> (200, 240, 100)
(101, 120, 150) -> (0, 0, 0)
Most peoples can not determine difference between (100, 120, 150) and (101, 120, 150). But everybody will see what (200, 240, 100) and (0, 0, 0) are different.
- Different part of the picture can use the same color for different purposes. For example: blue sky and blue shirt. If this is colors are like, when changing sky color would automatically change skirt color. Do not try to make blue shirt to be red and preserve sky as blue. Of course, ICE Color can do it. But result would not perfect.
- Most photos has some noise. This is noise can be strong or weak. If you have bright picture with weak noise, then noise problem is not important for you. But if you have dark picture with strong noise, when after making this is picture more contrast noise also would have more contrast. Need to find optimum between noise level and picture contrast.
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