The best glass money can buy can't undo the damage caused by a bad filter. That's why the Hitech filter system is now part of the Visual Departures group of innovative products. Made of pure optical resin, Hitech filters are manufactured to more exacting standards than any other photographic filter. Compare filter types , and you'll find that Hitech's filters are a great match for your fine lenses. Optical resin base is far sturdier than glass or gelatin filters, easy and safe to clean.
Surface is flatter than polished glass filters, more scratch-resistant than gels.
Holders come in both sizes, in wide-angle and normal designs, with a variety of slots and threaded front rings.