Ever wondered how ISO works? (W Video)

[pluginbaby]

[video=youtube;WEApLA-YNko]http://www.youtube.com/watch?feature=player_embedded&v=WEApLA-YNko[/video]

 

[area0404]

Then why do high ISO films get noise too?

 

[David Kwok]

Then why do high ISO films get noise too?

I believe high ISO films doesn't give you more noise, but it shows as more grainy because the silver halide particles are more coarse to be more sensitive.

 

[allenleonhart]

I believe high ISO films doesn't give you more noise, but it shows as more grainy because the silver halide particles are more coarse to be more sensitive.

which is why high iso film is called grain and not noise hahaha

 

[surrephoto]

Then why do high ISO films get noise too?

It's not noise. It's the chemical grains which become more visible because to acheive higher sensitivity, the grain size has to increased.