The picture type can be chosen by clicking the appropriate button. Only pictures with a continuous range of tones can be generated.
There are three choices of picture type, one greyscale and two different kinds of TrueColor colour images. TruColor pictures occupy four times as much memory as a greyscale picture at the same resolution.
The first decision is simple: If no colour is used in a picture,
then use the economical
greyscale type. If a colour picture is
needed though, which of the two colour types is the one to use?
The answer hangs on what the ultimate use of the picture will be. If it's intended mainly for video applications, or isn't meant for printing, or will be printed on an RGB printer, then the RGB type is the one to choose. This is more likely to be the exception ..., however.
In nearly all normal
uses, the colour picture will be
printed at some time or other onto paper. With such documents you will
preferably assign CMYK colours to all other objects; the advantages
are that the colours are both directly controllable and well defined.
Then you should use the same advantages for the new picture frame. In particular, CMYK values that may be contained in any vector elements present will then be adopted unchanged.
Should the original frame contents be RGB pictures, or colours defined as RGB (this includes, above all, the freely chosen colours), then these are converted via the currently valid colour separation.
