Pure Light Protection Filter vs Think Tank Digital Holster 5 V3: which is safer?
Think Tank Digital Holster 5 V3 is the clear pick. Promaster Pure Light Protection Filter carries a failing PFAS grade, and we never recommend buying a failing product.
Promaster
Pure Light Protection Filter
PFAS grade
Overall grade
Verdict
Hazard flags
Material
Confidence
PossibleHeavy metals in optical coatings (antimony, cerium, lead)
PossibleGlass dust from breakage
PossibleFluorinated compounds in coatings (Teflon-family coating, Teflon-type coating analogues)
Our pick
Think Tank Photo
Think Tank Digital Holster 5 V3
PFAS grade
Overall grade
Verdict
Hazard flags
Material
Confidence
PossibleUndisclosed water-repellent coating chemistry
PossibleCoating degradation over time
Where these two actually differ
- We flag Heavy metals in optical coatings (antimony, cerium, lead), Glass dust from breakage and Fluorinated compounds in coatings (fluoropolymers, PTFE analogues) on the Promaster and not on the Think Tank Photo.
- We flag Undisclosed water-repellent coating chemistry and Coating degradation over time on the Think Tank Photo and not on the Promaster.
- The Promaster is Optical glass with protective coatings where the Think Tank Photo is Ballistic nylon, weather-sealed fabric, metal hardware, which is most of the difference in these two grades.
- The gap is 35 points, wide enough that this is not a close call, and the Think Tank Photo is the one to buy.
Both products run through the same public rubric: materials, coatings, brand disclosure, lab findings, and recalls, plus a beyond-PFAS hazard analysis. Grades are model-based estimates, not lab tests. How grades work →
More waterproof camera & lens protection cases: see the full ranking