Digital BW, The Print

I'm not Roy, but I can help you with this one.

Rendering Intent (Perceptual, Relative Colorimetric, Saturation etc.) defines which characteristics of the original color space (Source Space) you are coming from that are to be preserved when mapping into another color space.  When the gamuts of the two spaces do not entirely overlap something has got to give.  By choosing a rendering intent you are telling the Color Management Module (CMM) what properties are important to you.  Proofing is the process of evaluating which intent best serves your image through a test print or changing the way it displayed on your monitor (soft proofing).

Perceptual - Attempts to preserve the visual relationship between colors by compressing the gamut. It usually comes at the cost of desaturation color.  Often used for photo printing.

Relative Colorimetric -  Preserves all in gamut colors  that are directly reproducible in both color spaces), clips out-of-gamut colors to the nearest reproducible hue, and scales the white point of the source to the white point of the target.

Saturation - Maps the saturated primary colors in the source space to the saturated primary colors in the target space, without bothering about differences in hue, saturation, or lightness.

No matter which Rendering Intent you use, a compromise of the original image will be made.  Proofing is important.
  ----- Original Message ----- 
  From: donbga 
  To: DigitalBlackandWhiteThePrint@yahoogroups.com 
  Sent: Friday, February 27, 2004 1:27 PM
  Subject: Re: [Digital BW] New icc based Soft-proof profiles for QTR


  Roy,

  > to proof multiple rendering intents, then you need a separate proof

  I know you have been beset with questions so here is one more if you 
  may indulge me.

  What is meant by the phrase "rendering intents" in the context of the 
  sentence above?

  Thanks,

  Don Bryant




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