[erihsehc]

請問大家可以較到快門幾慢不用腳架影相仍清楚呢？

[Velsper]

小弟如果用dc仔影(200mm) 1/15秒都還有機會
單眼的話,1/60秒以下就危險了~

[ThunderBird]

100mm快過1/30
300mm快過1/90

[nocam]

1/ focal length,
but for me i need 1/ Lx2, old man hand shake :)

[CYY]

一般來講,1/60是安全快門.如果35mm焦距的話,其實1/40都應該無問題.

但假如焦距超過60mm,就要使用1/焦距的快門,假如焦距是105mm,就要使用1/125快門，假如200mm的話,就要使用1/200快門.

以上只是理論,實際要自己試試才知道.

[yesir5]

I don't have tripod nor monopod, I still be able to take picture sharp and clear at night with 2 seconds exposure. Just find yourself a sturdy platform and place your camera on it and you're set. heh heh heh....:):)

[gapman]

For me, 1/20 is max !

[ninekit]

depends on camera and focal length, the slowest with reasonable sharpness for me is 1/8s when using 35mm focal length.

[photobc]

>for me is 1/8s when using 35mm focal length.

Is the "35mm" a real focal length or just a virtual one (35mm equivalence)?

For me, the slowest shutter speed for hand held photographing is 1/(real focal length x 2). Usually, I does not set the shutter speed slower than 1/real focal length.

[ninekit]

i will * try * whatever shutter speed I have to use, just don't want to miss the chance.

yes, my mentioned 1/8s threshold is with 35mm real focal length lens with film body. of course I am not getting consistent acceptable reason with such a speed, but choice is good enough to try a shot.

there are other ways to improve the chance,

1. use rangefinder camera which has no mirror movements inside
2. try this technique, v. useful with digital camera, http://www.photo.net/learn/poormansis/
3. of course buy IS or VR lenses or DC with antishake la.

[ninekit]

and one question, does whether its real or "virtual", or precisely "effective" really matter?

I think so long as the angle the lens is covering are the same (i.e. same effective focal length), the same angular movement / shake will create the same blur on the final picture, so the safety shutter speed should always be 1/"effective focal length" in my opinion.