>>3825588>Conclusion? Stop down metering results in +3 stops overexposure I guess... at least with my two cameras.>Is stop-down metering known to be this inaccurate?First things first anon, do these cameras even meter a stopped down mode?
Very few full aperture metering SLRs would offer stop down metering because it's completely redundant and impractical.
The simplest explanation seems to be, the camera expects to read light with a full aperture, say ~f/2, which is communicated to the camera by a tab or notch in the lens.
If for whatever reason you managed to do "stopped down" metering by pressing the DoF preview or something, my guess is the camera is getting less light, while thinking it gets full light.
For instance, if using a roughly f/2 lens and stop down to f/5.6, the camera gets exactly 3 stops less light than it's expecting for the metering calculations, cause it still thinks it's an f/2 lens and all metering is done with the aperture physically fully open. In this case it'd give you 3 stops overexposure, which is exactly what you're getting.
Stopped down metering is just as accurate as open aperture.
But be sure the camera offers it, and there's no aurtomation that might get in the way and get confused by stopped down metering.
Why do you even need stopped down metering when you can do full aperture though? It's slow as shit and doesn't offer anything other than inconvenience and a dark viewfinder.
