Raw & Post Processing, Printing > Printing: Printers, Papers and Inks

Need help printing red

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gchappel:
I have an image I am trying to print. 
Black silhouettes on a backlight red screen- was a dance recital.
Is there a way to maximize the red- basically print with just red and black.
I have adjusted color in photoshop so r=255, g=0,b=0 hoping to force red.
What the ipf8400 prints is an orange, and also darker than it's brightest red.
I am obviously a newbie at this- printing away comfortably most of the time- but this one has me stumped.
Thanks for any help
Gary

DeanChriss:
If you soft proof this image and turn on the gamut warning you will probably find the background color is out of gamut (i.e.; beyond the range of the paper/ink combination you are using). If that turns out to be the issue, while viewing the soft proof with the gamut warning turned on you can make adjustments like color, saturation, brightness (assuming you've selected just the background) to bring the color into the gamut you can print. If you are printing on a mat finished paper changing to a semi-glossy or glossy paper can help a lot.  Otherwise you just have to get as close as you can using the gamut warning and probably a saturation adjustment. I hope this helps!

gchappel:
Thanks for the direction.  I tried a correct gamma approach- it gave me a red, but too dark.  Darker than the brightest red the printer can print.  I then tried a brighter red- but that was out of gamma and pushed the print output towards orange.  i have moved over to a gloss paper.  Relative works better than perceptual- I think.  Maybe what I have is as good as I will get- will test some more.
Thanks
Gary

LGeb:
The red is out of gamut for your printer. Experiment with the different rendering intents, which control how the out of gamut colors are handled. See the section "About rendering intents"

shadowblade:
The problem is not just gamut - it's also dynamic range.

On screen, there is a huge difference in light intensity between the red and the black. Aim a lightmeter at it and the red is much brighter. This contrast is not reproducible on paper - even if the red were in gamut and you could print such a bright, intense red, you still couldn't reproduce the contrast. This is true with any high-contrast image, but this image relies particularly heavily on this contrast for its impact.

Printing it on a high-gloss, metallic surface would certainly help. If the display allows it, backlit transparency would be a far preferable display medium for this image.

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