Think Tank Digital Holster 5 V3 vs Series 9 Linear Polarizing Filter: which is safer?
Tiffen Series 9 Linear Polarizing Filter is our pick: better on PFAS and on the overall hazard picture.
Think Tank Photo
Think Tank Digital Holster 5 V3
PFAS grade
Excellent 85/100
Overall grade
Good 59/100
Verdict
Skip
Hazard flags
⚑ 2
Material
Ballistic nylon, weather-sealed fabric, metal hardware
Confidence
45%
PossibleUndisclosed water-repellent coating chemistry
PossibleCoating degradation over time
Our pick
Tiffen
Series 9 Linear Polarizing Filter
PFAS grade
Excellent 85/100
Overall grade
Excellent 85/100
Verdict
Buy
Hazard flags
none flagged
Material
Glass and optical coatings
Confidence
75%
Where these two actually differ
- We flag Undisclosed water-repellent coating chemistry and Coating degradation over time on the Think Tank Photo and not on the Tiffen.
- The Think Tank Photo is Ballistic nylon, weather-sealed fabric, metal hardware where the Tiffen is Glass and optical coatings, which is most of the difference in these two grades.
- These two are level, close enough that price and fit should decide it rather than our grade.
- We are less certain about the Think Tank Photo grade, at 45% confidence against 75%, because it discloses less.
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