Fast lenses, and High ISO

Started 5 months ago | Discussions thread
EinsteinsGhost
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Excuse me for interrupting the theatre...
In reply to bobn2, 5 months ago

bobn2 wrote:

They are important when they are important, but not before they are important. The problem we have is that people think that ISO is the implementation details. That misunderstanding is not their fault, it is because a great many sources, including this site have told them that it is so. So, the first thing people need to get is what ISO actually is...

That makes me wonder how I must respond to those who suggest that if you increase the ISO from 100 to 200, you can make a lens faster since the exposure is faster.

But you may resume the theater I'd promised (and you didn't want to trust me on that).

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