Dear Ilah, RawDigger looks like quite a potent RAW analytical tool. Thanks for mentioning it 😊 Glad it runs on Mac and Windows. / Roger -----Original Message----- From: Iliah Borg <iliah.i.borg@gmail.com> Sent: Friday, June 21, 2019 6:33 PM To: graxx@videotron.ca Cc: Colorsync-users@lists.apple.com Subject: Re: Exposure Value Dear Roger, Based on your gray card NEF: You are in 14-bit mode, maximum is 2^14-1-black level (600) = 15873; average on the card (and the card seems to have some rather strong imperfections) is 1181 (you can check with RawDigger, trial version is enough). That puts the exposure at log2(1181 / 15871) = 3.75 EV below clipping; the camera is calibrated to produce midtone 3.35 EV below clipping, that means the exposure is 0.4 EV below the midtone.