主题：【摄影游戏】月亮 -- raindrops

没有相机可以扑捉。

我觉得拍的太近了，太清晰了，不如远远的，朦胧的好看。

所以曝光时间跟普通的日光下的景物是差不多的。

其他的星星就不一样了。

coz, the actual brightness on the film is same as in day time. agree? :)

that is the difference, that guy used 400*2=800mm, his image of moon on the film is about full of the frame, and yours is only 1/3 , and you enlarge it, so loose the sharpness. I have *2 tele-converter, but I do not have long lens. I am thinking of getting a 180f2.8. do you have any idea? thanks buddy

我的图片是100％ crop，月亮的直径大约是340 pixels，原图是3000x2000。

算一下：2000/340 * 300 ＝ 1765，用 1800mm 长焦就可以拍成 full-frame 的月亮。

septicemia 的图是缩小后的图，“他的月亮”应该是大的多。如果也是100％ crop 的话，大约有这两倍大。

你如果用 180mm 长焦拍，你的 100％ crop 的月亮直径大约是 200 pixels，也不错！

我就爱瞎琢磨

看来还是不够呀。

比长焦镜头划算.而且如果只拍摄月亮,太阳,前面我贴的文摘中的polar alignment就不要了.拍摄过程就很简单了.

大家以为如何?

BTW,如果还想有大画面,说不定就要上中幅了.

I thought about this.

The moon light is very dynamic. It changes every minutes, when it is rising from the horizon.

On full moon day, or one day before, the exposure meter in camera can make right measurements only at the moon rising time, when the sky is still bright and the moon is not very bright. In about 1/2 or 1 hour the moon is in its full brightness, no any exposure meter, either matrix or spot, would work for you.

The expo of moon should be the same as sun shine 16 rule? Well, maybe, maybe not.

Based on my experiments I will shoot the moon in full brightness with f=11, shutter speed 1/125 to 1/500, depending the clearness of sky. Sometimes around the moon there are thin clouds that cannot be seen by our eyes, but they may change the camera exposure.

The half moon, at the first/last quarter, is less bright than the full moon.

In December of 2005,

Dec. 14 moon rise 15:16, set 6:26;

Dec. 15 moon rise 16:03, set 7:32; (full moon night)

Dec. 16 moon rise 16:59, set 8:29;

(Chicago: Central Standard Time)

Have fun.