[神高達]

我想問, 我部D300S想影星軌得唔得呢?

[lokism3]

Sure. The most basic things need are B shutter and tripod; every camera with B shutter, and you've got a tripod, then you can make it.

[lokism3]

BTW, you need a bit knowledge about the star, and you need to find a real dark outdoor place.

[神高達]

但我快門應該set幾多, 太長ccd會唔會過熱的?

[lokism3]

It depends on the how far the stars move, and how long the tails you want.

If you're using the "B (bulb)" shutter, you need a relase cable too; the B shutter opens when you press & hold the button.

[神高達]

如果我30分鐘先關快門, ccd會唔會因過熱而燒左?

[snoopybee]

你睇清楚你部機的 spec 先問呢個問題啦, D300s 係用 CMOS.

[神高達]

咁請問CMOS會唔會燒架啦~~~

[siubi09]

長期開著B 快門, CMOS唔會燒但會有紅點(所謂過熱....)

基本上都係死的

[ray_choi]

但係影星軌,講下都可能要開成2,3個鐘快門

[煩友]

只聽過canon出過一部可以影星的數碼機, 冇其他機種自稱有呢款功能
點解唔用菲林相機, 又平又實際

[talestar]

影星軌都係用多張合成的方法
即係連續影幾十張 合成一張相
曝光組合要睇現場環境

[相机操作工]

拍星轨时周边要足够黑暗,
F4-8,时间15-45分钟,ISO尽量低,否则有噪点.
一般数码单反均可拍摄,
多拍一定会熟练掌握