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Adding noise to white backgrounds, who does this?

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  #1  
Old 04-11-2008, 03:29 AM
Hendrik Hendrik is offline
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Adding noise to white backgrounds, who does this?

I while ago I was at a tradeshow and a well-known retoucher gave a demonstration. One tip he had was to add low opacity monochromatic noise to the pure white backgrounds to give the printer something to print.

So my question: who adds noise to the white backgrounds?

Opinions appreciated.
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Old 04-11-2008, 05:22 AM
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Damo77 Damo77 is offline
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Re: Adding noise to white backgrounds, who does th

That's strange, I understood that was "old" thinking, from the days of early postscript printers. I'd be interested to hear other people's opinions.

I certainly add a small amount of noise to long gradients (eg false skies), just to be safe from banding.
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Old 04-11-2008, 06:20 AM
JavierT JavierT is offline
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Re: Adding noise to white backgrounds, who does th

Quote:
Originally Posted by Damo77 View Post
That's strange, I understood that was "old" thinking, from the days of early postscript printers. I'd be interested to hear other people's opinions.

I certainly add a small amount of noise to long gradients (eg false skies), just to be safe from banding.
Me too, and good results.
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Old 04-11-2008, 07:25 AM
SilvaFox SilvaFox is offline
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Re: Adding noise to white backgrounds, who does th

Same here. I use noise to help banding and to hide my "smooth stuff" in otherwise grainy images. My "old" thinking reminded me of gravure printing, where anything less than 4% would not print, but there would still be better ways of adding tone to blown out areas.

As far as I know, scum dots have never been a desirable quality. And, I don't know any pressmen that have trouble printing white.

Cheers
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Old 04-11-2008, 08:28 AM
Hendrik Hendrik is offline
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Re: Adding noise to white backgrounds, who does th

He said he added this noise to let the printer print something, so it suggests there is a benefit.

btw, the retoucher is Adrien Hendrickx (from Belgium), so someone who knows what he's talking about.
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Old 04-13-2008, 07:38 AM
Hendrik Hendrik is offline
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Re: Adding noise to white backgrounds, who does th

No one else?
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Old 04-15-2008, 07:28 PM
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Damo77 Damo77 is offline
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Re: Adding noise to white backgrounds, who does th

Quote:
Originally Posted by Hendrik View Post
He said he added this noise to let the printer print something, so it suggests there is a benefit.

btw, the retoucher is Adrien Hendrickx (from Belgium), so someone who knows what he's talking about.
I'd never heard of him, and I'm still not convinced. Sounds pointless to me.
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Old 04-15-2008, 08:09 PM
pixelzombie pixelzombie is offline
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Re: Adding noise to white backgrounds, who does th

was it in the original photo as pure white?
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Old 04-15-2008, 11:23 PM
kyo kyo is offline
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Re: Adding noise to white backgrounds, who does th

I've heard this from a lot of retouchers actually.. though personally I've never noticed a big difference. I think a lot of it may have to do with the particular paper/medium you're printing to and the printer you're using.

Kyle
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Old 04-15-2008, 11:35 PM
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Damo77 Damo77 is offline
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Re: Adding noise to white backgrounds, who does th

No, I don't think so. If some minimum dot is required by the printer, it should be built into the ICC printing profile, not applied during retouching.
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