i***f
发帖数: 10682 | 1 http://www.tiffen.com/tiffen_filters_faqs.html
Q: How many antireflective layers are there in the coatings on the Tiffen 58
CP circular polarizer and precisely what kind of layers are they?
A: The Tiffen Circular Polarizer is not multicoated at all. We used to carry
TMC (Tiffen multicoated) filters but found no significant difference in
their light transmission and also that the coating could be easily damaged,
resulting in poorer performance. In any case, multicoating is a proprietary
process, | p*******y
发帖数: 944 | 2 抱歉没看你的东西啊，不过记得高中物理课本说过有一种叫做增透膜，通过在膜的两个界面反射波相互干涉造成反射波抵消(要求厚度是1/4*lambda)，根据能量守恒原理，透射波能量增加，。。。好像是这么解释的。
所以either高中课本错了，or你的标题错了。
58
carry
,
proprietary
【在 i***f 的大作中提到】
: http://www.tiffen.com/tiffen_filters_faqs.html
: Q: How many antireflective layers are there in the coatings on the Tiffen 58
: CP circular polarizer and precisely what kind of layers are they?
: A: The Tiffen Circular Polarizer is not multicoated at all. We used to carry
: TMC (Tiffen multicoated) filters but found no significant difference in
: their light transmission and also that the coating could be easily damaged,
: resulting in poorer performance. In any case, multicoating is a proprietary
: process,
| d*****0
发帖数: 68029 | | i***f
发帖数: 10682 | 4 标题没错，让大伙看看Tiffen官方的说法。
个界面反射波相互干涉造成反射波抵消(要求厚度是1/4*lambda)，根据能量守恒原理，
透射波能量增加，。。。好像是这么解释的。
【在 p*******y 的大作中提到】
: 抱歉没看你的东西啊，不过记得高中物理课本说过有一种叫做增透膜，通过在膜的两个界面反射波相互干涉造成反射波抵消(要求厚度是1/4*lambda)，根据能量守恒原理，透射波能量增加，。。。好像是这么解释的。
: 所以either高中课本错了，or你的标题错了。
:
: 58
: carry
: ,
: proprietary
| p*******y
发帖数: 944 | 5 好吧，看了一下那个FAQ，你的标题应该来自这句话吧：
"We used to carry TMC (Tiffen multicoated) filters but found no significant
difference in their light transmission and also that the coating could be
easily damaged, resulting in poorer performance."
内容提取：
1. Tiffen used to manufacuture TMC filter;
2. It was of no help, fragile, and even downgrades the performance
中文翻译："Tiffen说，他家的滤镜镀膜是失败的”，注意是他家的，not B+W, not
hoya, and not others. 考虑到别家的带膜的贵还有人买，只能是Tiffen的镀膜工艺不过硬。
别说Tiffen，这个标题即便引用bible，从常识面也知道是错的，否则怎么可能眼睛，望远镜，相机的镜头都镀
【在 i***f 的大作中提到】
: 标题没错，让大伙看看Tiffen官方的说法。
:
: 个界面反射波相互干涉造成反射波抵消(要求厚度是1/4*lambda)，根据能量守恒原理，
: 透射波能量增加，。。。好像是这么解释的。
| d******a
发帖数: 32122 | 6 其实hoya和肯高的镀膜也不过硬
所以我就买Sunpak了，反正镀膜掉了再买一块镜子
significant
不过硬。
，望远镜，相机的镜头都镀膜。你把打击面扩大了，可能造成不仔细看的新手的对滤镜
错误印象，这是我反话的原因。
【在 p*******y 的大作中提到】
: 好吧，看了一下那个FAQ，你的标题应该来自这句话吧：
: "We used to carry TMC (Tiffen multicoated) filters but found no significant
: difference in their light transmission and also that the coating could be
: easily damaged, resulting in poorer performance."
: 内容提取：
: 1. Tiffen used to manufacuture TMC filter;
: 2. It was of no help, fragile, and even downgrades the performance
: 中文翻译："Tiffen说，他家的滤镜镀膜是失败的”，注意是他家的，not B+W, not
: hoya, and not others. 考虑到别家的带膜的贵还有人买，只能是Tiffen的镀膜工艺不过硬。
: 别说Tiffen，这个标题即便引用bible，从常识面也知道是错的，否则怎么可能眼睛，望远镜，相机的镜头都镀
|
|
