And that?s not all these High Transmission filters feature a low profile titanium finish ring and anti-reflective black lock ring which sets these filters apart from the rest.
* Independent testing based on these specifications was conducted at the Rochester Institute of Technology (RIT), Rochester, NY.
1. Abrasion test Severe abrasion test according to MIL-C-48497, using eraser stub certified to MIL-E-12387.
2. Adhesion test tape adhesion test according to MIL-C-48497, using adhesive tape certified to MIL-A-A113 rev C.
3. Humidity Test humidity test in accordance with MIL-C-48497, 95% RH at 50
degrees C for 24 hours.
Acratech Ball Heads
812 Warming Filter
