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05-14-2012, 09:08 AM   #1
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Should mirror flop during optical/DOF preview on k-r?

Hi -
Quick query - should the mirror flop when using the green button optical/DOF preview on a k-r? It does so every time (sometimes more than once).
It does not do so on my K100D - is this a different design or a problem (the camera has just returned from repair for, uhhm, uncontrolled mirror flopping!)
best,
Neil

05-14-2012, 11:12 AM   #2
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No, I don't think the mirror should move at all.

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05-14-2012, 11:25 AM   #3
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Thanks Adam - i've been looking around the forum and some seem to think that the k-r mirror is meant to.
There is a thread here
"The K-r has no aperture motor (the little bump in the K-5 body on the right side (left if you look onto the lens) of the mirror box. Therefore, it needs a second source to pull the aperture spring back. It is all part of a single mechanics which rewinds the shutter curtains, rewinds the mirror and pushes the mount's aperture lever. The K-7/5 needed to get an entirely new mirror box (new dampened mirror, new shutter, new aperture motor) to separate functions."

What I find a bit odd is that the old K100D doesn't seem to need the mirror to do this.
05-14-2012, 11:49 AM   #4
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The mirror cycles with the K-x when you stop down, and I'm sure it does on the K2000 as well.

05-15-2012, 11:35 AM   #5
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Yes, it's one reason why Icould never consider the K-x for my own use: I use manual lenses with stop down metering all the time, and in quiet environments (jazz concerts) where all that extra flopping would drive me crazy. I had heard mixed reports on whether this was true for the K-r, but I tended to believe the reports that said it suffered the same flaw.
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