SL2 black frame mystery

[mbmoore]

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Hi - I have an issue once every 100-200 exposures that's a real mystery. I'm happily shooting away when one frame will behave as if it's doing a long exposure - like the shutter stays open for a second or longer. Then the next frames are fine.

When I look at the photos afterwards the mystery frame is black, but if I pull the exposure up +4 stops it is there - maybe 6 stops underexposed in all. And oddly the EXIF shows a normal shutter speed and aperture, but the focal length of the lens is 6mm instead of whatever was attached (usually my 50SL Summicron)

I've had it happen using flash and no flash, so I don't think it's an interaction with the Profoto trigger.

Is this a known thing? Is anyone else seeing it? Since it's pretty rare I haven't taken it in for service because it would be hard to reproduce.

Thanks in advance for any info.

[helged]

1 hour ago, mbmoore said:

Hi - I have an issue once every 100-200 exposures that's a real mystery. I'm happily shooting away when one frame will behave as if it's doing a long exposure - like the shutter stays open for a second or longer. Then the next frames are fine.

When I look at the photos afterwards the mystery frame is black, but if I pull the exposure up +4 stops it is there - maybe 6 stops underexposed in all. And oddly the EXIF shows a normal shutter speed and aperture, but the focal length of the lens is 6mm instead of whatever was attached (usually my 50SL Summicron)

I've had it happen using flash and no flash, so I don't think it's an interaction with the Profoto trigger.

Is this a known thing? Is anyone else seeing it? Since it's pretty rare I haven't taken it in for service because it would be hard to reproduce.

Thanks in advance for any info.

Not experienced on my side on any of the SL house I have used. You could pass a message through the FOTOS app: it is my understanding that Leica reads and responds to these messages.