How much resolution is needed in a file to make a good print on your lightjet 430?
Strictly technically speaking a file should be saved to the desired output size at 300 dpi. Due to file interpolation routines employed by the LightJet 430 beautiful prints can be made from files with less than optimal resolution (dpi). For example: To make an 11×14 LightJet 430 print your file should be sized to 11×14 and have at least 150-300 dpi. A good rule of thumb would be that any file with a resolution of 200 dpi or more at the desired output size could possibly be capable of producing prints of fine art quality. There is no reason to use files with more than 300 dpi at the desired output size.