Jan 25, 2016, 16:26
The article also says that "the f16 rule measures incident light"!!!
It doesn't measure anything. It's just a rule of thumb. I think the author should stick to his/her day job..
It doesn't measure anything. It's just a rule of thumb. I think the author should stick to his/her day job..
GrahamS
Take my advice. I'm not using it.