Does anyone have any experience with Nikon F Photomic meters? Particularly when using 1.5v Alkaline batteries (not ideal, I know). I shot a couple of rolls of tri-x a few days ago, and am expecting the shots to be pretty cool - definitely caught some good moments on a good lighting day. Last night, I thought I would compare the meter to my Canon EF (which has a voltage regulator, so using 1.5v batteries is no problem), and to a light meter app on my phone (which has proven to be quite useful, in a pinch.) Using Kodak Gold 200 as a test roll, it gave me some interesting readings, compared to the iPhone app... I ended up having to dial in ISO2400 (!!!) on the ISO ring, in order for it to match what the phone read, which, in my opinion, is an absurd difference. It's like 3 1/3 stops off... Something here is fishy, I've read that people have had no problems using their Nikon F with modern 1.5v batteries, and now that I've found such an inconsistency in metering, I'm reluctant to develop these rolls (without knowing how much to compensate) Any insight on this would be appreciated.