[Radiance-general] printing floating point images

[Lars Grobe]

Hi!

> In general you need to print to a print device that goes direct rgb.

??? You mean a driver that can do the rgb to cmyk translation, without the
need to do that in an application? Just wondering, I never heard about
rgb-printers, do you mean transfering to a film (which is like foto and as
such rgb)?

Regarding printers, it is a big help to use printers that don't offer just
cmyk, but also the light colors (there are 6 and 8 color printers), as this
avoids raster problems in bright regions of your renderings.

Calibration... afaik the radiance output is close to srgb, so if you have an
output profile for your printer (icc), this should be easy. There is also
macbethcal which could be used to make a simple output calibration, however,
I never used it (I tried once).

I can't imagine that the bit per channel question is really relevant (for
inkjet printing), because the limitations of paper and the raster technique
used to mix the colors.

I will have to do some large-format printouts of radiance pictures (which
have to be rendered first ;-) for an exhibition next march, as such I am
interested in the topic.

CU Lars.