How to make renders ready for print?
Other than the RGB-CMYK color conversion, there is nothing special to know about printed media. Use 300 dpi for image that will be published in magazine or on A4 page, switch to 150 dpi (or even 100 dpi) for big posters. Note that the anti-aliasing doesn’t have to be as precise as for screen/monitor images. A dot of ink is never as sharp as a pixel. At 300 DPI, 2×2 pixels area are blended together. If the paper (or the printer) is not of a high quality, then the blurred area can go up to 4×4 pixels. Therefore, using high anti-aliasing settings would be a loss of time. The tiny little errors on your render won’t be noticeable on the printed media. A more important problem should concern you: color banding. Color banding (stepped area of colors) appears when one area of the render is made of a too large linear gradient of color. It appears quite often on high-resolution renders. One way to get rid of this is to make the area noisier in your 2D application (“add noise”, “film grain” filte
