Frequently Asked Questions
Everything you need to know about our precision optical filters and accessories.
What makes STC optical glass different from standard filters?
STC utilizes high-quality SCHOTT glass with proprietary multi-layer nano-coatings that ensure zero color shift, high light transmission, and superior scratch resistance for professional photography.
How long does international shipping take?
Standard international shipping typically takes 7-14 business days. We also offer express courier options via DHL or FedEx which deliver within 3-5 business days depending on your location.
Do you offer a warranty on your Clip Filters?
Yes, all STC Clip Filters and screw-in filters come with a 12-month manufacturer warranty covering defects in materials and workmanship from the date of purchase.
What is your return policy for incorrectly ordered sizes?
We accept returns within 30 days of delivery, provided the product is in its original, unopened packaging. Customers are responsible for return shipping costs for size exchanges.
Are STC filters compatible with weather-sealed lenses?
Absolutely. Our Ultra Layer coatings are hydrophobic and oil-resistant, making them the perfect companion for weather-sealed gear in challenging environments.
Which payment methods do you accept?
We accept all major credit cards including Visa, Mastercard, and American Express, as well as digital payment options like PayPal and Apple Pay.