Monthly Archives: August 2023

Brightness-based flash duration analysis for a Rollei HS Freeze Portable flash unit over 9 f-stops (power settings: ¹/₂₅₆ up to ¹/₁) in Normal Mode.

Generated by the FDM-1T flash duration meter.

Exposure-based flash duration analysis for a Rollei HS Freeze Portable flash unit over 9 f-stops (power settings: ¹/₂₅₆ up to ¹/₁) in Freeze Mode.

Generated by the FDM-1T flash duration meter.