Originally posted by normhead The print file will be 10%-20% brighter.
What if the histogram is already bordering the left limit?
Originally posted by PDL Prints do not produce their own light. (Hint: no brightness adjustment)Prints reflect light. (Hint: totally dependent on the light reflected in the environment you are in) Also the color of the light will effect how you see the colors.
Yes. To me, that is the most important to understand. A photograph with normally centered histogram, without clipping, will look great on print when lit with neutral while reflector (~5000K) at a 30 degree angle relative to print plane, assuming the viewing axis is perpendicular to the print. Noting the effect of inverse square law of projected light, a 3:2 print in landscape orientation will preferably be lit by two reflectors, while a single reflector will be do well to illuminate a square print, and a three or four reflectors configuration will optimize lighting for a long panoramic print.