Heliopan Protection Filter 2021 Ø 40,5 x 0,5 mm | coated
The Protection Filter meets the wish of many photographers after a pure lens protection
- Type 2021
- Stable brass version
- High-quality optical SCHOTT glass
- Special hard coating
- absolutely color neutral
- Excellent for wide-angle lenses
- Reliable protection for the lens
- Water, fat and oil-repellent
- attachment neutral
- 100% plan parallel
- Additional internal thread for attaching additional filters or lens diagrams
- Made in Germany
Highest optical precision, multicoating (MC), slimline brass capture, with front thread
The function of the Protection Filter is to keep dirt, sand or splash off from the front lens. The particularly clear special glass with high transmission is naturally remunerated. The remuneration reduces the adhesion of dirt particles and water drops.
Good lenses are many times more expensive than filter, and so it is close to screwing a filter to protect the sensitive front lens. However, so that this lens protection does not associate with a permanently acting filter effect, the protective filter such as clear glass should be completely color neutral and of the highest transparency. Therefore, you should use a Protection filter that has all these properties.
Heliopan-Protection is a purely special protective filter that is optimally ground from spectacle glass and coated with a high quality compensation. It is used for optimal protection for the front lens.
Heliopan filter fittings
The filter fittings are made precisely from brass. Brass is dimensionally stable and robust. The brass capture causes no quality-reducing mechanical stresses in the filter glass because of its very low thermal expansion even with strong temperature fluctuations. Further, the risk of jamming in the filter thread of the lens is minimized. The black coating of the brass frame prevents possible influences through reflections on the socket.
All Heliopan Slim brass captures have a front thread in the same size of the screw-in detection, so that another filter or the scattering light diaphragm can be screwed.
Heliopan uses only optical glass filters from SCHOTT colored glass. The filters are made entirely in Germany. Their optical accuracy surpasses that of gelatin filters. The filters are very resistant to aging and bubbles.
By using state-of-the-art high-tech machines, both in metalworking as well as in the optics, the highest quality is guaranteed
