What lens for MOON! - 未名空间MITBBS历史存档

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What lens for MOON!

What lens for MOON!# PhotoGear - 摄影器材

l*n2010-09-23 07:09

1 楼

不可以买VGC了吗? tried in store today, cashier is nice, he scanned the
reward certificate, but the screen poped up something like "no qualified
item to meet the required reward amount" ... tried twice, same thing..
还可以买其他GC吗?

p*e2010-09-23 07:09

2 楼

a moon is around 1 degree in angle
suppose we are using 135 system
sensor is 36x24
if we want to get a moon with diameter 24mm on film
we need
24 pi

z*62010-09-23 07:09

3 楼

Canon有1200mm的

【在 p********e 的大作中提到】

: a moon is around 1 degree in angle
: suppose we are using 135 system
: sensor is 36x24
: if we want to get a moon with diameter 24mm on film
: we need
: 24 pi

w*n2010-09-23 07:09

4 楼

不是这样算的吧，镜头都有视角放大率的

【在 p********e 的大作中提到】

: a moon is around 1 degree in angle
: suppose we are using 135 system
: sensor is 36x24
: if we want to get a moon with diameter 24mm on film
: we need
: 24 pi

p*e2010-09-23 07:09

5 楼

there for using a 24-105 lens or 70-200 lens is impossible to shoot the moon
less bad when using 2x extender

a moon is around 1 degree in angle
suppose we are using 135 system
sensor is 36x24
if we want to get a moon with diameter 24mm on film
we need
24 pi

【在 p********e 的大作中提到】

: a moon is around 1 degree in angle
: suppose we are using 135 system
: sensor is 36x24
: if we want to get a moon with diameter 24mm on film
: we need
: 24 pi

N*D2010-09-23 07:09

6 楼

10.5mm fisheye

【在 p********e 的大作中提到】

: a moon is around 1 degree in angle
: suppose we are using 135 system
: sensor is 36x24
: if we want to get a moon with diameter 24mm on film
: we need
: 24 pi

t*r2010-09-23 07:09

7 楼

用什么lens啊
google一下就行了

【在 p********e 的大作中提到】

: a moon is around 1 degree in angle
: suppose we are using 135 system
: sensor is 36x24
: if we want to get a moon with diameter 24mm on film
: we need
: 24 pi

w*e2010-09-23 07:09

8 楼

or 8mm

【在 N**D 的大作中提到】

: 10.5mm fisheye

s*g2010-09-23 07:09

9 楼

问少是学数学的？

【在 p********e 的大作中提到】

: a moon is around 1 degree in angle
: suppose we are using 135 system
: sensor is 36x24
: if we want to get a moon with diameter 24mm on film
: we need
: 24 pi

N*D2010-09-23 07:09

10 楼

望远镜啊，刚才用10倍那个看，据清楚，比拍出来的强多了

moon

【在 p********e 的大作中提到】

: there for using a 24-105 lens or 70-200 lens is impossible to shoot the moon
: less bad when using 2x extender
:
: a moon is around 1 degree in angle
: suppose we are using 135 system
: sensor is 36x24
: if we want to get a moon with diameter 24mm on film
: we need
: 24 pi