not kidding at all. BTW: nothing to do with sensitivity.

It is not sensitivity, but noise. Increasing ISO will introduce luminous and chromatic noise. In most camera, noise won't show up in pictures until ISO reachs pretty high. But it is still there.

You are correct that aperture, shutter and ISO are linked. But aperture also controls the depth of field. Shutter control the motion.

The photographer takes a picture to capture an image, which tells a story at that moment, not just mathmatically corrected light exposure.

所有跟帖： 

• not really -noso- ♂ (728 bytes) () 05/27/2009 postreply 08:37:27

• Which modern DSLR set base ISO at 250? -用户名被占用了- ♂ (12 bytes) () 05/27/2009 postreply 08:40:31

• go check urs -noso- ♂ (0 bytes) () 05/27/2009 postreply 08:41:24

• Nikons at 100/200. Canon at 50/100. Hasse at 50/100. so ??? -用户名被占用了- ♂ (0 bytes) () 05/27/2009 postreply 08:45:33

• haha -noso- ♂ (24 bytes) () 05/27/2009 postreply 08:58:34

• Which one? give me a model please. -用户名被占用了- ♂ (0 bytes) () 05/27/2009 postreply 08:59:07

• 回复：Which one? give me a model please. -noso- ♂ (11 bytes) () 05/27/2009 postreply 09:00:18

• Ok. You got me :-D -用户名被占用了- ♂ (0 bytes) () 05/27/2009 postreply 09:01:27