Not too surprising, it is illuminated by the same sunlight after all!
Originally Posted by John cox
I have a metered prism for my ETRSi and a couple of ancient handheld meters which came as part of ebay camera lots. I don't tend to use them though as I like the waist level finder (and I'm not so keen on the bulk of the speed winder if walking around with the camera, without that I find it very hard to hold the camera steady with a prism finder on). I only shoot B&W negative film at the moment and for that I find Sunny 16 works pretty well.
Of late I've taken to trying to guess the correct exposure with my 35mm cameras before I activate the metering. I'm usually right to within half a stop or so, and it makes a good check for metering faults (like the ME Super I had which underexposed by two stops until I dripped lighter fluid into the film speed mechanism and worked thirty years of gunk out).
What I have noticed is that it's better to look for shadows than it is to try to guess light levels, especially if you have self-tinting glasses or sunglasses on. You also need to think about location - I'd guess that my shaded front garden would probably be about f5.6 at the moment, while the sunlit part of the back garden would be f11-f16.