I’ve seen the abbreviation EI a lot lately – it’s properly been around forever, but I just haven’t noticed it, before now – and didn’t know what it meant exactly. I figured it had something to do with Exposure. Well, Google is your friend, when there are things you don’t know.
Normally written like this: Kodak Portra 160 (EI 80)
NB: ISO means the International Organization for Standardization and indicates the light sensitivity your film is rated as.
From this post and forth, I will also use it on my blog 🙂
Here another example.
This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.