Adox Scala 50

Adox Scala 50 is a direct response to the discontinuation of Agfa Scala 200X in 2005. Agfa Scala had a following among documentary and fine-art photographers who wanted a black-and-white slide for projection or contact printing without going through the extra step of making an inter-positive from a negative. When Agfa ended production, there was no real substitute. Adox eventually filled that gap.

Scala 50 processes with Adox's own reversal chemistry kit, not with E-6. This means it is self-contained: you buy the film and the chemistry together, and you do not need a lab that runs E-6 with a reversal bleach option. For home processors this is actually more convenient than trying to source specialty lab runs. The chemistry produces a silver positive image on a clear base with good density range when the exposure is accurate.

The ISO 50 rating is conservative by design. Reversal processing has no exposure latitude reserve the way negative processing does: overexposure thins the shadow silver during bleach, underexposure produces a dense result with blocked shadows. Metering carefully and trusting the meter is the right approach with Scala 50. Zone Light Meter's reciprocity correction past one second is handled without any manual calculation; the reciprocity exponent is 1.0, so there is no correction to apply. Whatever the meter reads is the exposure you set.

Available in 35mm only. The current coating run is on a 35mm base too thick for 120, and Adox has slit all of it to 135. The 120 positive slides are striking on a light table; the grain is fine and the tonal range in good light is wide enough to make projection or optical printing practical.

Comparison with Fomapan R 100: Scala 50 is slower, finer-grained, and has better shadow detail in normal light. Fomapan R 100 is faster and more contrasty. Which one works depends on the light you're shooting in.