Digital BW, The Print

You can purchase a 21 reflection Steptablet (or film transmission Steptablet ) from Stouffer Industries. 

http://www.stouffer.net/

Mark Nelson
www.PrecisionDigitalNegatives.com
PDNPRint Forum @ Yahoo Groups
www.MarkINelsonPhoto.com
Curve Calculator III for the Mac Now Available !!!

sent from my iPhonetypeDeviceThingy

> On Mar 29, 2014, at 7:47 AM, <homershannon@gmail.com> wrote:
> 
> Where can I get a pre-printed, high quality, 21-step grayscale for scanner calibration purposes? I have a Q-13 and a MacBeth chart, but neither of these gives me confidence that I am doing my calibration step correctly when using the QTR Stepwedge Tool script.  
> 
> 
> I've looked all over the web and don't see this item listed anywhere. 
>