Digital BW, The Print

> -----Original Message-----
> From: bruce greene [mailto:bagreene@verizon.net] 
> Sent: Thursday, December 18, 2003 9:20 AM
> To: DigitalBlackandWhiteThePrint@yahoogroups.com
> Subject: [Digital BW] Re: poor man's densitometer?
> 
> 
> 
> 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,

That is a possibility with some of the flatbed scanners but in general
scanners do a better job punching through the dense negative highlights than
an enlarger. Check your scanning software as this may be the cause of your
clipping.

Martin Wesley
www.carolynfrayn.com/Guests/MartinWesley/pages/MW_01.html
www.borderless-photos.de/guests.html


> 
> 
> 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
>