Vertical focal plane shutter and camera orientation

Started Nov 12, 2012 | Discussions thread
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Helen
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Vertical focal plane shutter and camera orientation
Nov 12, 2012

Here's an odd question, but I'd be grateful for your views.

Would you consider it normal (or reasonable) for the vertically-running focal plane shutter in a brand new DSLR or mirrorless camera to malfunction with the camera mounted upside-down?  Though I can see it's not a situation they're typically designed for and the effect of gravity is reversed, which could potentially have a result like this, I wouldn't actually expect the shutter to be affected too much.  I had the camera upside down to get evidence of a lens decentering issue and took two exposures.  On the second one, the shutter tapered (capped) - i.e. a narrow strip across the top of the final image was completely unexposed.  The shutter speed was 1/320 - way off the camera's maximum of 1/4000 where I'd perhaps expect such an effect to show up more readily.

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