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Digital BW, The Print

Index last updated: 2026-04-28 22:56 UTC

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Re: Converting RGB density readings into BW density readings

2006-03-24 by Helen Bach

Hi,

I used about thirty sets of readings from a Macbeth TR924. I'll try
the second formula on them when I get the chance.

I bought my PFP on eBay. It was $400 including shipping, and it was
delivered the day after I won it.

Best,
Helen

--- In DigitalBlackandWhiteThePrint@yahoogroups.com, "joejx8"
<joejx8@...> wrote:
>
> 
> Hi Helen,
> 
> Thank you so much for your detailled answer.
> 
> I found two formula for converting Y / RGB:
> 
> Y=0.299*R + 0.587*G + 0.114*B 
> Y=0.222*R + 0.707*G + 0.071*B
> 
> Seems that the first one match your's. Did you get your formula from 
> few or many (Y,R,G,B) values ?
> 
> I have looked à PrintFix pro. Very interesting but still too 
> expensive for my need (about $500) :)
> 
> Thanks again !
> 
> J.

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