JSFYFE
Newbie
Correct.
The tonal range of the scene is never going to change (unless you mechanically add or subtract light and make the contrast range lower or higher).
You just have to understand the scene and make the choices ----- sacrifice the blacks or sacrifice the whites.
In Melanie's case where she was photographing a dog show, if she wanted to photograph a black dog and increased the ISO setting (decreased exposure), then the dog probably would lose most of it's detail and show as a pure black with little or no detail. On the other hand, a brown and white dog probably would probably yield a useable negative at multiple settings.
The tonal range of the scene is never going to change (unless you mechanically add or subtract light and make the contrast range lower or higher).
You just have to understand the scene and make the choices ----- sacrifice the blacks or sacrifice the whites.
In Melanie's case where she was photographing a dog show, if she wanted to photograph a black dog and increased the ISO setting (decreased exposure), then the dog probably would lose most of it's detail and show as a pure black with little or no detail. On the other hand, a brown and white dog probably would probably yield a useable negative at multiple settings.