This parameter defines which Rendering Intent is used for a color conver­sion. This parameter overrides the option Rendering Intent of the con­version settings.

• Note: If there is no Rendering Intent explicitely defined in the PDF the default is "Relative Colorimetric".

Objects, which are using a Blend mode listed in this parameter, will be processed using the normal color conversion and no preservation of black objects will take place.
This might be appropriate for objects (with empty colorant channels), that are using certain blend mode, which are using these empty channels to achieve a special effect with underlying objects.
If these empty channels would be replaced by a single colorant color space, these effects would not work anymore, so they must be preserved in some certain cases.

Please see article "Processing black objects" for further details.

This parameter only applies to device dependent RGB color – either if the object uses DeviceRGB or if it uses ICC based RGB or CalRGB but the parameter StripSourceProfile is set to On. It only has effect if ConvertToDestination is set to On. If not set to NoChange, instead of carrying out an ICC based color conversion, RGB colors where each of the Red Green and Blue values are equal, will be converted directly to the corresponding black tint value. For images this will only have an effect if all pixels in the image have equal Red, Green and Blue values.
The color conversion engine uses an internal tolerance of 3%, this mean the differences between R and G, G and B as well as for R and B must be <=3%.

These settings can be used for an improved and more controlled color conversion of gray RGB images or graphs to CMYK by allowing you to set individual tolerances to specify which RGB values should be considered neutral gray and which should not.

Because color differences are easier to see in lighter shades of RGB gray than in darker shades, separate tolerances can be set for light (0-20%), mid (40-60%), and dark (80-100%) shades. Everything in between will be interpolated. RGB grays below the tolerance are converted to separation black (100% K only), while RGB grays above the tolerance are converted to CMYK to preserve color representation.

Objects, which are using a Blend mode listed in this parameter, will be processed using the normal color conversion and no preservation of black objects will take place.
This might be appropriate for objects (with empty colorant channels), that are using certain blend mode, which are using these empty channels to achieve a special effect with underlying objects.
If these empty channels would be replaced by a single colorant color space, these effects would not work anymore, so they must be preserved in some certain cases.

Please see article "Processing black objects" for further details.

This parameter applies to gray vector and image objects. It indicates which color space to use for gray objects after the conversion. For example, it may be necessary to encode a DeviceGray object as Separation Black object, so that overprinting also works for subjacent CMYK objects.

• Note: DeviceGray cannot overprint CMYK, even if overprint is set to true, whereas Separation Black does overprint Cyan, Magenta and Yellow once overprint is set to true.
• Note that both DeviceGray and Separation Black do overprint spot colors if overprint is set to true.

If a and b is 0 the luminosity value is directly transferred to the designated color space.
The color conversion engine uses an internal tolerance of 1%, this means the differences between L and a as well as for L and b must be <= 1%.

Objects, which are using a Blend mode listed in this parameter, will be processed using the normal color conversion and no preservation of black objects will take place.
This might be appropriate for objects (with empty colorant channels), that are using certain blend mode, which are using these empty channels to achieve a special effect with underlying objects.
If these empty channels would be replaced by a single colorant color space, these effects would not work anymore, so they must be preserved in some certain cases.

Please see article "Processing black objects" for further details.

This parameter defines the way process colors (Cyan, Magenta, Yellow, Black) in DeviceN or Separation are treated. If set to On, they are treated as DeviceCMYK objects. Not defined color channels are set to 0% in the respective color. To keep the overprint settings, the original color space (Separation or DeviceN) is recreated after the conversion if possible.

Use the AdvancedColorConversion parameters to define the treat­ment of newly added color channels.

If set to "No special treatment", tints in colorants that were originally 0 are preserved.
Handles all black objects. Black objects are using only the K channel of CMYK or DeviceGray or Separation Black or DeviceN with only one channel named Black.
If necessary, new channels will be added for DeviceN (Separation color space becomes DeviceN after the conversion). With AdjustDotGain the dot gain difference between source and destination profile is calcuated and all color values are modified so that the dot gain difference is compensated. This is useful mainly for standard PCS conversions.

Specifies the method for recompression of converted images.

• Note: All processed images are decompressed for color conversion tasks. If recompressing with JPEG the quality level is to be defined with the param­eter Destination-JPEGQuality. Please keep in mind that every JPEG compression leads to the loss of quality.

Allows for specifying the quality level in which JPEG objects are saved after the conversion.

• Note: The predefined values are interpreted as a percentage declaration between 0 and 100. The value in brackets are giving a rough comparision to the equivalent setting in Adobe Photoshop.

Allows for specifying the transparency blend color space after the color conversion.