丐帮还搞了个新的coating？# PhotoGear - 摄影器材
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HD Lens Coating
To quote the Pentax press release:
"Compared with conventional multi-layer coatings, the new multi-layer HD
Coating, exclusively developed by PENTAX, offers much improved light
transmittance and a much lower refractive index. Because it minimizes
reflections, it delivers sharp, clear images free of flare and ghost images,
even under demanding lighting conditions such as backlight. This coating
assures optical performance almost equal to Aero Bright Coating, another
PENTAX-exclusive lens coating process made possible by advanced
nanotechnology and applied to higher-class lenses."
This implies that the coating will be reseved for higher-end lenses, as
Pentax how has 3 coatings to choose from (Aero Bright, found on the DA 25mm
F4 645 lens, HD, and SMC).
To quote the Pentax press release:
"Compared with conventional multi-layer coatings, the new multi-layer HD
Coating, exclusively developed by PENTAX, offers much improved light
transmittance and a much lower refractive index. Because it minimizes
reflections, it delivers sharp, clear images free of flare and ghost images,
even under demanding lighting conditions such as backlight. This coating
assures optical performance almost equal to Aero Bright Coating, another
PENTAX-exclusive lens coating process made possible by advanced
nanotechnology and applied to higher-class lenses."
This implies that the coating will be reseved for higher-end lenses, as
Pentax how has 3 coatings to choose from (Aero Bright, found on the DA 25mm
F4 645 lens, HD, and SMC).
