[km80794]

各位師兄，晚安！
請問 DSLR 的所謂1、2、3 或4級的防震（如VR，AS 之類）如何分別呢？是否 1級防震相等於 1/10 sec?
謝謝各師兄的賜教！

[santabenny]

n 級的防震=比安全快門低 n 級 !

安全快門=1/Focal length sec.

[km80794]

santabenny 兄，你的解答太專門了，小弟愚昧不大明解，請再賜教！
謝啊！

[bb1032003]

km80794,

safety shutter speed is the 1/focal length x crop factor

crop factor will be 1.5 for Nikon, 1.6 for Canon consummer grade DSLR, for 1Dmark IIN is 1.3 for 5D, 1Ds, 1ds markII is 1 and 2 for 4/3 system.

eg. if you use 200mm focal lenght and use Canon 1.6 crop factor camera say 400D or 350D then safety = 1/ 200* 1.6 = 1/320 sec.

This shutter speed will prevent you from camera shake, if 1-stop image stabliser means you can use 200mm focal length but 1/160 sec still prevent you from camera shake,

then 2 stop is 1/80 sec. 3 stop is 1/40 sec. etc.

[km80794]

hi dear bb1032003 , thanks for your detail explanation and wish you a lovely Tuesday.
Best regards~

[kingkonghk]

1級 <--- 適合任何年齡使用
2級 <--- 需家長陪同使用
3級<--- 必需18歲以上人士使用
4級<--- 偷偷地用

[beeboy]

甘……五幾呢？

[kmlau123]

What is 五幾呢？

[mk07]

What is 五幾呢？
-------------------------
WARNING!

[ml_chiu]

bb1032003, Thanks !