Fast lenses, and High ISO

Started Jul 18, 2014 | Discussions thread
EinsteinsGhost Forum Pro • Posts: 11,977
Excuse me for interrupting the theatre...

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).

 EinsteinsGhost's gear list:EinsteinsGhost's gear list
Sony Cyber-shot DSC-F828 Sony SLT-A55 Sony Alpha NEX-6 Sigma 18-250mm F3.5-6.3 DC OS HSM Sony 135mm F2.8 (T4.5) STF +12 more
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