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but if the shutter is moving quickly, a uniform pattern might create a strobe effect under some conditions, which could (conceivably) confuse the metering system.
I think you're clutching at straws somewhat. But anyway, the metering cells of the OM2(n) received light from wide areas, rather than narrow spots, so there would be no difficulty at all in avoiding any significant strobe effect. For any given average reflectance the spacing of the white dots only needs to be kept inversely proportional to their linear dimension. Then, for any given metering cell pattern the range of fluctuation of the response for a reading off a moving curtain can be made as small you like by adjusting the dot size.
But really, all this is way, way over the top. The notion that a simple plain shutter curtain with the right reflectance couldn't have been used is just fanciful. Oly's pattern was a gimmick - nothing more and nothing less. I've granted Nick his point about OTF measurement during the long exposures - that's fair enough, but the randomized shutter curtain pattern was utter drivel. :-)
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