46mm WR 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

46mm WR Protector Filter

PFAS grade

B 85/100

Overall grade

B 81/100

Verdict

Buy

Hazard flags

⚑ 1

Material

glass optical element with metal frame

Confidence

78%

PossibleWR hydrophobic coating degradation

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