Originally Posted by RalphLambrecht
It's esy. All you have t to do is multiply the indoor exposurewith the temperature difference to get he outdoor exposure;in F for asa and in Cfor iso.
Ah, but don't forget about the difference in color temperature between inside and outside, too!
I do use a digital device in my photographic pursuits when necessary.
When someone rags on me for using film, I use a middle digit, upraised.