m*7
2 楼
super cold?
y*n
5 楼
cold啊,我的就是这个价卖的
这个头最大的问题是跑焦很厉害,其次是全开软,建议不要碰...
这个头最大的问题是跑焦很厉害,其次是全开软,建议不要碰...
h*e
6 楼
昨天有个加拿大人不知道价格。卖1000+40 shipping还包filter
瞬间没了。FM上的事情。
瞬间没了。FM上的事情。
m*7
37 楼
最靠谱的说法:
spherical aberration - near the center of the lens elements, the curvature
is relatively low and the aberration between ideal and actual is pretty
small. When you stop down, the lens only sees through the well-corrected
center so you have "correct" focus. Near the edges (included in the wide
open image), spherical aberration piles up and can cause a shift in the
plane of best focus between the ideal (similar to where it would be at say
f8) and actual.
【在 a***a 的大作中提到】
: 我就是问,这是什么原理?
spherical aberration - near the center of the lens elements, the curvature
is relatively low and the aberration between ideal and actual is pretty
small. When you stop down, the lens only sees through the well-corrected
center so you have "correct" focus. Near the edges (included in the wide
open image), spherical aberration piles up and can cause a shift in the
plane of best focus between the ideal (similar to where it would be at say
f8) and actual.
【在 a***a 的大作中提到】
: 我就是问,这是什么原理?
a*a
38 楼
这是解释边角IQ下降吧
【在 m****7 的大作中提到】
: 最靠谱的说法:
: spherical aberration - near the center of the lens elements, the curvature
: is relatively low and the aberration between ideal and actual is pretty
: small. When you stop down, the lens only sees through the well-corrected
: center so you have "correct" focus. Near the edges (included in the wide
: open image), spherical aberration piles up and can cause a shift in the
: plane of best focus between the ideal (similar to where it would be at say
: f8) and actual.
【在 m****7 的大作中提到】
: 最靠谱的说法:
: spherical aberration - near the center of the lens elements, the curvature
: is relatively low and the aberration between ideal and actual is pretty
: small. When you stop down, the lens only sees through the well-corrected
: center so you have "correct" focus. Near the edges (included in the wide
: open image), spherical aberration piles up and can cause a shift in the
: plane of best focus between the ideal (similar to where it would be at say
: f8) and actual.
b*e
40 楼
强烈要求终结者发包子。
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