I may be missing something here, but here goes anyway... 24 bit colour digital video has 8 bits for each of the red, blue and green components of the signal. The dynamic range, or ratio between the quantisation noise floor and full scale is 2 to the power of 8 or 256. Therefore surely any projector with more than a 256:1 contrast ratio should be able to display 24 bit colour to its full depth? A projector with a much higher contrast ratio will be able to display a blacker image when all the red, green and blue 8 bit values are zero - but the moment any of these words is non zero you are back to the limited dynamic range of 24 bit colour, i.e. no improvement in grayscale reproduction? Basically my reason for asking this is that I am currently in a quandry about which PJ to go for - the Sony VPL-HS10 is my favourite at the moment, but it obviousely has only a 700:1 contrast ratio. The question is - given the 256:1 dynamic range of digital video (dvd and SKY etc), does this limitation (and it is the only limitation I am concerned about) really matter - apart from for the display of the black bars above and below a > 1.85:1 aspect ratio movie? Mark.