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Old March 3rd 08, 07:19 PM posted to rec.aviation.piloting
John T
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Posts: 194
Default Prop performance in clouds question

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I am using a Kodak Easy Share camera. Does that adjust based on what
it "sees"?


Cameras typically use a combination of shutter speed, aperture and exposure
to maintain the "best" picture (as defined by the software). I haven't
researched your camera, though I suspect it manipulates all three based on
the video I've seen on your channel. I know for certain your shutter speeds
are way different from mine based on the prop filtering.

Unless of course if the frame rate can change based on what the camera
sees being "so automatic"?


Possible, though I doubt actual frame rate is changing (different from
shutter speed).

I sure don't know myself, but pretty coincidental seeing the strobe
change in VMC vs IMC.


I don't doubt a small change in prop speed as I've seen similar changes in
my own prop "strobe," but I'd put it more to general atmospheric (or, more
likely, attitude changes) rather than specific to clouds as I've seen
similar changes well outside clouds on "severe clear" days.

Try this: Take video during a flight on a clear VMC day. Maintain level
flight as absolutely as you can, then enter climbs and descents. See what
that does to your prop strobe. I suspect even slight attitude changes will
show different strobe patterns without touching engine or prop controls.

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John T
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