Originally posted by Snydly Sorry to go off topic slightly here, but I've asked this question before and although many people tried to explain, I still didn't get it.
How do you determine and quantify EV? Do you have a light meter with an EV readout? I see people give an EV number and I would like to understand EV and how it's calculated or measured.
Thanks,
Bill
Originally posted by Snydly How do you determine and quantify EV?
I have a small Excel spreadsheet that takes any values. Can't remember where I got it from, but it seems to work when compared to the reference tables. I don't know how to upload it here, but this is how to set it up:
If cell C2= Aperture, C3=Shutter speed (for 1/200, enter value as 200), C4=ISO, then EV calculation formula for cell C5 is: =((2*LOG10(C2)-LOG10(1/C3))-LOG10(C4/100))/LOG10(2)