Цитата:от: arkie
Откуда сия информация, поделитесь источником.
(речь шла о двустороннем многослойном просветляющем покрытии защитных фильтров)
Честно говоря, если Вам это действительно интересно, могли бы и сами в сети покопаться.
Вот, навскидку, официальный сайт
Hoya:
http://www.hoyafilter.com/products/hoya/hoya-02.html
Цитирую:
In 1996 Hoya introduced the line of Super Multi-coated filters. Consisting of a Skylight, 1B, UV (0), ND 2X, ND4X, and a low profile circular polarizer, this line of filters has a 5+1 layering system
on each side of the glass: 5 layers of anti-reflective coating and a transparent easy-clean top coat. This reduces light reflections off the filter surface to an average of just 0.3%. This is the lowest reflective rate on the market, from any filter manufacturer.
Hoya manufactures a full line of filters in both standard and Hoya multi-coated. The difference between Hoya’s standard line and that of other manufacturers is that Hoya standard filters have one layer of anti-reflective coating
applied to each surface of the glass.
You should beware! Some other manufacturers claim to have “coated” filters. But this coating is often only applied to the front side of the glass,
not both sides like Hoya filters.
Кстати, фильтры Хойя последней золотой серии HD для цифровых камер считаются лучшими в мире , но и самыми дорогими (в 1,5-2 раза дороже B+W).
То же самое про Tiffen:
Tiffen Digital HT Filters - A New Breakthrough in Multi-Coated Filters
Tiffen Digital HT filters are a state-of-the-art technological breakthrough in multi-coated photo and video filters. Made for the discerning professional and imaging enthusiast,
Digital HT filters with Hi-Trans Double-Sided Titanium Multi-Coating surpass even military specifications for hardness and durability.
B+W ( http://www.photofilter.com/B+W/bw_filters.htm ):
MRC refers to the unique Multi Resistant Coating developed by Schneider-Kreuznach, which comes as standard on B+W XS-Pro Digital Filters. It provides perfect anti-reflection, brilliant colors and high contrast. Only Schneider lenses and B+W filters are protected by this extremely resistant multi-layer broadband coating
(eight layers on both sides). In addition, the scratch-resistant, water- and dirt- repellent outer layer makes it easier to clean the glass surface. Due to its low residual reflection (0.5%) MRC prevents ghosting or double images, which can be caused by return reflections from sensors.
Я, правда, шнайдеровских фильтров этой серии в продаже не видел.
То же самое и с DHG серией Маруми (если интересно - поищите сами, у меня эта информация в их печатных каталогах).
