Protector Filter vs WR UV Filter: which is safer?

Sigma WR UV Filter is our pick: better on PFAS and on the overall hazard picture.

Sigma

Protector Filter

PFAS grade

C 75/100

Overall grade

F 59/100

Verdict

Buy with care

Hazard flags

⚑ 4

Material

Unspecified filter media

Confidence

25%

PossibleUndisclosed filter media composition

PossibleBacterial growth if maintenance neglected

PossibleCartridge/filter media shedding into water

Why this gradeBuy

Our pick

Sigma

WR UV Filter

PFAS grade

A 100/100

Overall grade

A 96/100

Verdict

Buy

Hazard flags

⚑ 1

Material

UV-absorbing optical glass or mineral coating

Confidence

72%

PossibleOptical coating degradation and microabrasion

Why this gradeBuy

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: see the full ranking