I recently was given a Rollei 35, it's in fantastic shape and it even has a light meter built in. Me thinks hmm, maybe I should check it against my Sekonic spot meter. I put out the gray card, set ISO at 400, f5.6, fill the frame, measure: 1/30th second. Same settings and same angle with the spot meter: 1/15th second, exactly. Okay I think, you can't expect a Sekonic digital and a P&S meter that is 40 years old to be identical. But to further muddy up the water, I pulled out the Contax G2. Set it up exactly the same. 1/8th second. All batteries are fresh. Two stops difference. What gives here?