Welcome to the official website for the exciting new eBook on crafting digital negatives for contact printing:

Precision Digital Negatives for Silver & Other Alternative Photographic Processes

The PDN system is the finest SYSTEM available for crafting a digital negative.  Users are also getting fantastic results with Polymer Plate Photogravure using Precision Digital Negatives.

Purchasing & Shipping information is provided for both the US and overseas.

If you do not have a 31-step tablet (a film sensitivity guide) for calibration, you will need one. A 31-step provides increased accuracy in calibration over the 21-step tablet. You can purchase one here that I have designed and is produced for PDN by Stouffers Industries—the price is very competitive and it has improved features that make it much easier to read the results. Note that the 31-step tablet will be required for Curve Calculator II.

If you do not wish to order online, you may send a check or money order (in US currency only) to:

Mark I. Nelson
Precision Digital Negatives
240 South Aldine
Elgin, IL 60123

WITH MAIL ORDERS PLEASE INCLUDE:
NAME
ADDRESS
PHONE NUMBER
EMAIL ADDRESS (VERY IMPORTANT FOR FUTURE INFO)

If you have any trouble ordering or using the shopping cart, please notify me immediately at This e-mail address is being protected from spam bots, you need JavaScript enabled to view it The shopping cart seems to prefer Microsoft EXPLORER or FIREFOX BROWSERS. Try switching browsers if you have problems.

When ordering from outside the United States, you can choose any "state" and then correct any errors once you are switched to PayPal to finalize the order.

See the Workshops section for new workshop listings.

Coming Soon! Curve Calculator II - Much faster & easier! Not just an upgrade to the old Curve Calculator, CCII is a stand alone database with versions that work on either Windows or Mac platforms. All of your calibration information can be kept in one place! CCII generates a family of hybrid curves for each of your alt process calibrations—choose the hybrid curve that is the most pleasing to your photographic vision and export it automatically in Photoshop curves file format. See my article on PDN, Curves, and Curve Calculator II in the November/December issue of View Camera Magazine.

Thanks for visiting!