G5 and a strange black bar...

Itchybiscuit

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Hi folks,

I was out and about today and managed to ruin quite a few images but I don't know why.

In portrait mode, the black bar is along the bottom of the image but it's still there - any ideas?
Subscribe to see EXIF info for this image (if available)


This is the RAW image file sans tweaks. Hope someone can help.
 

agentlossing

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Looks like it's gotta be something in front of the sensor/lens. Since you say it's in the same place regardless of orientation, that rules the camera strap out, or something similar dangling in front of the lens... Have you taken the lens off and inspected the sensor and lens elements?
GX1•17/2.8•30/2.8
 

Itchybiscuit

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Looks like it's gotta be something in front of the sensor/lens. Since you say it's in the same place regardless of orientation, that rules the camera strap out, or something similar dangling in front of the lens... Have you taken the lens off and inspected the sensor and lens elements?
GX1•17/2.8•30/2.8
Aye, first thing I did when these showed up in LR was to check for anything untoward but both lens and sensor are clear. I took a couple of quick snaps with a fully charged battery and another card of the same make and speed (a Transcend 600x 16gb). They were clear of defects. I just wondered if it was a known problem and if I could expect it to crop up in future images. It really is a bit rough when you get home and find that almost half of the shots I captured are useless. Sad face.
 

Itchybiscuit

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Lens hood? I had the supplied 14-42mm kit lens attached with the supplied lens hood fitted. It may even have been reversed on the lens.

If I gave the lens hood a slight bump and dislodged it from the bayonet groove at one side, would the resultant 'shadow' occur? I'm thinking the lens hood has come away from the side of the lens and is sitting slightly askew allowing light to hit the sensor on either side. That's my best guess at this point - am I perhaps way off base?
 

GBarrington

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Can you take some exposures with the lens off? If it's still there then it can't be a lens problem. Then try some long exposure with the lens off, maybe it's shutter curtain related?
That was my first thought, I've seen similar images back in the film days when the shutter was having problems. But there are SO MANY options with shutters any more, I don't know if my old tech knowledge still has any validity.
 

Itchybiscuit

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Can you take some exposures with the lens off? If it's still there then it can't be a lens problem. Then try some long exposure with the lens off, maybe it's shutter curtain related?
I did so and no issues. The black bar seems to have disappeared whether I shoot with or without a lens. I was still holding out for a possible explanation but so far we've managed to rule out anything 'mechanical' on either the lens or camera. That's good news right there. I'll have to keep a weather eye out for a recurrence and keep my fingers crossed it doesn't happen again.

Thanks guys, appreciate your input. :thumbup:
 

fortwodriver

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Isn't there a plastic (or graphite?) frame around the sensor behind the shutter. It's possible that frame has come loose and something is causing it to slide around a bit - enough so one edge protrudes in front of the sensor in some circumstances?
 

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