Would you consider an option to display exposure as an EV100 value, in addition to ISO and shutter speed? It is a very useful and simple value, encoding the exposure in a single parameter, calculated as follows:
where aperture is the f-stop, speed the shutter speed (in inverse seconds), and iso the ISO sensitivity. The log function takes the base as the second argument. I always use it visually to estimate exposure while shooting with my all-mechanical cameras. My usual notation is:
Hello,
Would you consider an option to display exposure as an EV100 value, in addition to ISO and shutter speed? It is a very useful and simple value, encoding the exposure in a single parameter, calculated as follows:
where
apertureis the f-stop,speedthe shutter speed (in inverse seconds), andisothe ISO sensitivity. Thelogfunction takes the base as the second argument. I always use it visually to estimate exposure while shooting with my all-mechanical cameras. My usual notation is:For example, when the scene's lighting is 12 EV, I shoot on ISO 400 film, and want to introduce an exposure correction of +1 EV:
that is 1/250 of a second at a 5.6 aperture. This notation is quite compact and shall fit on a single screen line.
Last edit: Anton 2021-05-24