[Raymondlife]

係外面爬左好多文.

話其實2支野既用途係2回事.

如果唔影MODEL 好似話大白好好多.

但係大白佢係推拉式既. 好似好唔安全咁.. 尤其係當用MF 時就仲PK.

係咪又係真架呢?

有冇師兄可以提點一二?

THANKS!

[jsklee]

what is the purpose of you to use 100-400?

[Obi-Wan]

Raymondlife
"係大白佢係推拉式既. 好似好唔安全咁.. 尤其係當用MF 時就仲PK." ,====I sold my BW and bought SW+extender 2X just because the "推拉式" sometimes change focus and mounted on the tripod if the lens is point up or down.
Based on my copies SW, 2X and BW, I found
1. SW+2X@f11 similar to resolution of BW@f5.6 to 8
2. focusing speed BW faster than SW+2X, but with 2X, SW is faster
3. BW IS is not as good as SW IS

jsklee
Why not ask Google "what is the purpose of you to use 100-400? " b4 posting silly response for specific question such as "係大白佢係推拉式既. 好似好唔安全咁"?