Efke 50 and #47 filter

[Darkroom317]

Does anyone know of a filter factor for Efke 50 with a 47 filter.?

 

[Nikanon]

The standard factor is 6x or 2.5 stops. This will vary based on the color of the subject, the time of day, and the spectral sensitivity of Efke 50, which is not as red sensitive as most modern films. I would stick with the 6x factor and change it based on your results, testing and experimentation will give the most accurate results to what you desire!

Nikanon