一个关于大光圈， 小光圈的问题

[CaQwXqYG]

感觉拍wild life 的时候很多情况用小光圈加比较长的曝光时间 ， 是否这样可以获得更多的detail？

 

[davidc]

那得指望WILD LIFE在那里不动啊.

 

[fad]

For wild life, you always want to use relatively big aperture for 2 reasons: 1 you need the shutter speed; 2 in most cases you want to blur the background. Normally I stop down 1/2 or 1 stop from the biggest aperture and in many cases I have to shoot wide open as there is not enough light.

In your case, I think one potential problem is 2x extender. From what I read, it really degrades the optical quality of the photo. Try a comparison on a still object with and without 2x and see the difference.

 

[GangW]

You will be easy to find the answer if you have a try to take the wildlife pictures.

Don't be surprised why the big aperture long focus length lenses are so expensive.

Have a fun with taking wildlife pictures.