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Digital BW, The Print

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

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Re: poor man's densitometer?

2003-12-18 by bruce greene

thanks for the link Martin. I may give this a try. But  I don't think 
that my scanner is up to the task as it seems to clip the highlights 
slightly.
-bruce


On Thursday, December 18, 2003, at 03:25 AM, 
DigitalBlackandWhiteThePrint@yahoogroups.com wrote:

> Bruce,
>
> Another idea for you. Go to:
>
> http://www.stouffer.net/Productlist.htm
>
> Contact Stouffer and purchase their 37-step calibrated reflection 
> guide,
> R3705-1/2C fro $29.60. This will come with density readings for each 
> step.
> If you have any kind of a flatbed scanner you can then scan this 
> calibrated
> target along with the 100-step wedge you print with your printer. From 
> the
> scan in Photoshop you can use the eyedropper tool to measure K values.
>
> With a bit of math you can use the scanned values and the calibrated 
> values
> to calculate the density values of the step wedge you printed.
>
> Martin Wesley
> www.carolynfrayn.com/Guests/MartinWesley/pages/MW_01.html
> www.borderless-photos.de/guests.html

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