Originally posted by ChopperCharles Why would the leaf shutter matter one iota? That seems like a purposeful software limitation by Pentax, and not an actual, honest limitation of the camera system.
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Hi Charles,
Could be -- No mfg designs their products to necessarily fully support easily designed and manufactured third party accessories. There would be no real justification for consumers to buy OEM items. Granted, this would be somewhat contrary to Pentax's historical direction -- almost complete backward lens compatibility in all of their DSLRs has cost them millions in lens sales. . .
.. . But it also could be for an actual justifiable reason -- what if they wanted to allow other adapters to perform to a usable point, but prevent the accidental exposure of a charged (exposing) sensor for longer than 2 seconds without a lens mounted to protect it. A sensor that's exposing could continuously build a charge, attracting more debris, and would also be heating up -- possibly baking the debris on the sensor.
I don't know -- and I'm not suggesting that this is the reason, just posing one possibility that just came to me without a whole lot of thought.
If you need longer exposures, you can probably do it with Multiple Exposure Mode with or without Ev comp -- that should get you about 18 seconds, and you could possibly stack exposures to get multiples of that.
Scott