The Maxwell Render plug-in for Photoshop provides a useful action to make certain adjustments in your renders, similar to the Multilight adjustments in Maxwell Render.
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For a more precise color adjustment, a more complex “Channel Mixer” adjustment layer could be used, rather than the provided Hue-Saturation-Lightness color control. Simply disable the Color adjustment layer and assign a “Channel Mixer” adjustment layer to get a more precise per-channel color adjustment.
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_Use the Exposure slider to adjust the emitter intensity, and the Hue slider to adjust its color._
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As Adobe Photoshop cannot manage the spectral information from Maxwell Render images, the Color adjustment layer can only mimic the high precision spectral changes that Maxwell Render performs, so this poses some limitations. The Color adjustment action performs a hue-saturation change, so it is not possible to change the color of a pure white emitter. In this case (and in general with pure white, grey or black desaturated emitters), we strongly recommend replacing the “Color” adjustment layer with a more complex “Channel Mixer” adjustment layer. The “Maxwell Layer Adjustment” action has been tested in Photoshop CS3, CS4 and CS5.
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There is a limitation in the Photoshop CS3 and CS4 Standard versions (not present in the Extended version), which means that the Adjustment Layers cannot be created in 32Bits mode. Because this action works in 32Bits and uses Adjustment Layers to allow non-destructive adjustments, it won’t work on the Standard versions of Photoshop CS3 and CS4. If If you are using the Standard version of Photoshop CS3 or CS4, you can work around this limitation by converting your render to 16Bits (without merging) to be able to use the Action, as Photoshop is able to create Adjustment Layers in 16Bits. In 16Bits you will get a better result by setting your light layers to “Screen” blending mode, instead of “Linead Dodge (Add)”. Obviously, converting a 32Bits render to 16Bits will produce a reduction of the tonal range of the render. |
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