Efke Print film is a high silver content, chlorobromide, orthochromatic emulsion coated on a clear 170 micron polyester base. It was designed as a replacement for Agfa's Gevatone N31P and is excellent for creating enlarged negatives (in a two-step process) for contact printing. Used by many alternative process photographers the world over as the industry standard.
It has an ISO rating of 25 and a speed of P400. Varying the concentration of the developer can control the ISO range. For example using Dektol™, or LPD™ in stock solution increases the contrast. Further dilution reduces the contrast. Experimenting with different dilutions and developing times will produce the desired results.
Efke Print film tones in all available toners: Sepia, Selenium and Blue. With the blue toner, underexpose by 0.5-1.0 stops because blue toners add image density.
The Efke Print Film emulsion is relatively fast. Use a standard step wedge to determine exposure times. Put a black card under the film to avoid bounce back through the transparent substrate. Develop at least two minutes with all developers regardless of dilutions.
USE RED SAFELIGHT FILTER ONLY. Other safelights including OC are not compatible. Be sure the distance from tray to safelight is at least 40 inches.
Previously sold as Maco Genius Print Film
