Do you get gamma?
| Problem | When applying images to a surface, they may appear in the rendered frame as being a bit too light or washed out. This is because modo always renders internally at gamma 1.0 (linearly), and then applies the user's specified output gamma when displaying or saving the rendered result. Bitmapped images typically have automatic gamma applied to them in an image editor or digital camera (otherwise, they would look too dark to most users); and because of this, rendering with modo’s default gamma value (2.2) will make your images appear light or washed out as they have received double gamma. Therefore, it is important to de-gamma your images. |
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| Solution |
This can be done by inverting the gamma amount, simply by dividing the Render Output gamma amount, whatever it may be (but 2.2 is the default), by the image map's item 1.0 value. This can be done directly in the value input field using mathematical shorthand. For instance users can simply type “1.0/2.2” into the dialog box and press enter, and it will return the value “0.4546” (modo does the math for you!). Now the rendered image will produce the correct result. And if you are interested in a general understanding of gamma and how it works on your computer, Richard Yot has made this video that might fill in some of the gaps. |
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| Source | modo 601 User Guide | ||
| Author | James Darknell (MutantPixel) | ||
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