Hoya · Waterproof Camera & Lens Protection
Hoya HD3 UV Filter
Optical glass filter, low PFAS risk but unverified coating composition.
UV filters are typically glass with mineral or proprietary coatings. Hoya does not disclose coating composition or PFAS status. No public lab data available.
The safe swap
Sigma
Sigma WR UV Filter
100/100 safety
Same rubric that flunked this product. The swap earned its A.
Still want this one anyway? Check the price on Amazon. We’d swap it.
Material
Optical glass with UV-absorbing coating
Brand disclosure
Brand is silent on PFAS
Lab data
No public lab test
Why this grade
Unknown / proprietary coating
Proprietary coating with no disclosed chemistry.
Category baseline
other is a category where PFAS exposure is more common.
No PFAS disclosure
No public statement about PFAS in this product.
The full breakdown
What it's made of and why it matters
The Hoya HD3 is optical glass with a UV-absorbing coating applied to the surface. The glass substrate itself is inert and safe; the coating's composition (likely metal oxides or organic UV absorbers) is proprietary and not publicly disclosed. UV filters are passive optical components that do not leach, off-gas, or degrade during normal camera use because they are sealed in a metal ring and never contact skin, food, or water.
The brand's record and disclosure
Hoya is a major Japanese optics manufacturer with decades of camera filter production and no documented product safety recalls or hazard disclosures related to UV filters. The company does not publicly disclose coating chemistry or provide third-party safety certifications for individual filters. Their PFAS stance is undeclared, leaving coating composition unverified but raising no established red flags in the camera filter category.
How it compares in its category
UV filters are among the lowest-risk optical accessories because they are enclosed, non-consumable, and do not contact vulnerable populations. Hoya's HD3 line is mid-to-premium priced with good optical reputation; competitors (B+W, Tiffen, Nikon) have similar disclosure gaps and no documented safety advantages. The category itself has minimal regulatory oversight because filters are not food-contact, cosmetic, or textile products.
If you buy it
Store the filter in a dry environment to prevent fungal growth on glass surfaces. Do not disassemble or attempt to clean the coating with abrasive materials. Replace only if the glass is cracked, the coating is visibly delaminating, or optical performance degrades; normal use does not produce degradation. Periodic gentle cleaning with lens cloth and lens cleaning solution is safe and recommended.
Beyond PFAS: other things we checked
Established hazard classes for this product type, assessed from public information. These never change the PFAS grade; a Likely flag caps the Verdict at “Buy with care.”
Coating delamination or degradation
UV filter coatings can theoretically delaminate under extreme temperature swings or mechanical stress, but this is rare in normal camera use. No field reports of this hazard for Hoya HD3 are publicly available.
Optical glass breakage and sharp edges
Drops or impacts can fracture the glass, producing sharp fragments. This is a physical injury risk, not a chemical one, and is standard for all optical filters. Hoya provides protective cases to mitigate this.
Fungal or bacterial growth on glass surfaces
If stored in humid conditions without airflow, fungus can colonize the glass or internal lens surfaces. This degrades image quality but poses no health risk unless touched directly. Regular dry storage prevents this.
Metal ring corrosion or paint degradation
The metal frame can develop surface oxidation or paint chips over years of use, especially in salty or humid environments. This does not affect optical function or leach hazards but may reduce resale value.
Teflon-type coating or Teflon-family coating in coating
Some UV absorbing coatings may incorporate fluorinated compounds; Hoya does not disclose. Even if present, the sealed coating pose no inhalation or leaching risk during camera use.
What we don’t know
This grade is a model-based estimate from public materials, coatings, and brand disclosure at 62% confidence. It is not a lab result.
No independent PFAS lab test is on record for this exact product. A lab test could move the score in either direction.
The brand has not made a specific, verifiable PFAS-free statement, so part of this score reflects that missing disclosure rather than a confirmed material.
Formulations and coatings change between production runs. Always check the current label before buying.
Safer alternatives in Waterproof Camera & Lens Protection
Sigma
WR UV Filter
UV-absorbing optical glass or mineral coating
Lower concern optical filter; no known PFAS-prone components identified.
✓Naturally PFAS-free material
GoPro
HB-Series Lens Collection for HERO13 Black
Glass and optical lens elements
Lower concern. Glass lenses pose minimal PFAS risk typically.
⚠Brand says nothing about PFAS
GoPro
K&F Concept 4-in-1 Filter Kit for GoPro HERO9/10/11
Glass optical filters, metal frames, rubber gaskets
Lower concern. Optical glass filters unlikely to contain PFAS.
⚠Brand says nothing about PFAS
More waterproof camera & lens protection grades
How we score: every product runs through the same public 0–100 rubric based on materials, coatings, brand disclosure, lab findings, and recalls. See the full methodology → Spotted a mistake? Report an error.