h*******g 发帖数: 10585 | 1 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). |
x5 发帖数: 27871 | 2 普通coating有30%的反射?这有点扯把。。。
还是纵轴的坐标不是线性的?
images,
【在 h*******g 的大作中提到】![](/moin_static193/solenoid/img/up.png) : 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."
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t****g 发帖数: 35582 | 3 教授,纵坐标呀,满格是1%。
【在 x5 的大作中提到】![](/moin_static193/solenoid/img/up.png) : 普通coating有30%的反射?这有点扯把。。。 : 还是纵轴的坐标不是线性的? : : images,
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x5 发帖数: 27871 | 4 哦,没看见那个%。。。
【在 t****g 的大作中提到】![](/moin_static193/solenoid/img/up.png) : 教授,纵坐标呀,满格是1%。
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t*****r 发帖数: 2542 | 5 既然跟ABC差不多,为啥再搞一个?
This coating assures optical performance almost equal to Aero Bright Coating,
25mm
【在 h*******g 的大作中提到】![](/moin_static193/solenoid/img/up.png) : 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."
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t****g 发帖数: 35582 | 6 这些coating都是瞎吹。
100+层的coating我都做过(当然不是我做,我下单子别人做的),民用镜头用不起罢了。
Coating,
【在 t*****r 的大作中提到】![](/moin_static193/solenoid/img/up.png) : 既然跟ABC差不多,为啥再搞一个? : : This coating assures optical performance almost equal to Aero Bright Coating, : 25mm
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t*****r 发帖数: 2542 | 7 当然,除了当年最早的coating
或是smc搞出民用以后,其他都不值一提了
只是奇怪既然已经有个ABC coating,再搞一个有什么意思?成本降低很多?
coating这玩艺难道成本很高?占整个镜头成本10%有没有?
了。
【在 t****g 的大作中提到】![](/moin_static193/solenoid/img/up.png) : 这些coating都是瞎吹。 : 100+层的coating我都做过(当然不是我做,我下单子别人做的),民用镜头用不起罢了。 : : Coating,
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y*********e 发帖数: 7269 | 8 这次Pentax血本都放在645镜头上了,新镀膜,新的镜头防抖,新的三防,据说这个HD
是个新的镜头系列。
可是K-5的更新不给力啊 |
t*****r 发帖数: 2542 | 9 为啥有搞个新的?
HD
【在 y*********e 的大作中提到】![](/moin_static193/solenoid/img/up.png) : 这次Pentax血本都放在645镜头上了,新镀膜,新的镜头防抖,新的三防,据说这个HD : 是个新的镜头系列。 : 可是K-5的更新不给力啊
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y**********g 发帖数: 3071 | 10
HD
maybe FF is coming
【在 y*********e 的大作中提到】![](/moin_static193/solenoid/img/up.png) : 这次Pentax血本都放在645镜头上了,新镀膜,新的镜头防抖,新的三防,据说这个HD : 是个新的镜头系列。 : 可是K-5的更新不给力啊
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h*******g 发帖数: 10585 | 11 K-5II有两款啊
HD
【在 y*********e 的大作中提到】![](/moin_static193/solenoid/img/up.png) : 这次Pentax血本都放在645镜头上了,新镀膜,新的镜头防抖,新的三防,据说这个HD : 是个新的镜头系列。 : 可是K-5的更新不给力啊
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f****i 发帖数: 20252 | 12 关键是大入射角时候的反射率
了。
【在 t****g 的大作中提到】![](/moin_static193/solenoid/img/up.png) : 这些coating都是瞎吹。 : 100+层的coating我都做过(当然不是我做,我下单子别人做的),民用镜头用不起罢了。 : : Coating,
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