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 Dektolâ„¢, or LPDâ„¢ 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: Cachet/MACO Sepia, Selenia and Azure Blue toners. 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 a red filter during processing. Be sure the distance from tray to safelight is at least 40 inches.
Replaces item #4924 - Maco Genius Print Film
(Efke Print film is the same product directly from the original manufacturer)