Canon 6D white curtain phenomenon

Started Apr 17, 2013 | Discussions thread
brightcolours Forum Pro • Posts: 15,637

Freeman-Jo wrote:

tko wrote:

There is a strobe light going off. No doubt. You can see the nature of the shadows changing.

Look at the last image. Look at the singer's feet. In the dark areas his feet have no shadows projecting backwards. In the bright areas his feet have a strong, dark shadow coming towards us. You can see the strobe behind the singers head.

You still doubt? Look at the last photo again. Behind the singer's head is a bank of lights in the distance. You can see a red and a blue one in the left side of the image. In the middle image the blue one is off.

Guess where the bright source of light is centered. Right from the row of hanging lights. About where a 4th or 5th light would be.

Sometimes in the excitement of the event we forgot what really happened.


bigdaddave wrote:

That is NOT the flash from another camera, no way no how.

Do you know the chances of another flash going off in the same 1/500th of a second? Infinitessimal. You could try for years and not have that happen once.

It is the begginnings of shutter failure, no doubt about it, you are being fooled by the fact the area is much more exposed than the surroundings.

I agree that there is an external light source that cause the shadow, but I still don't see how you can come with a conclusion that this problem cause by external strobe-like lightsource  The way I see it is that there are multiple light sources.  None of which can be confirm that they are strobe-like.  Colloration<>causation.

So, lets see. You see there is a source causing that shadow. Only on the bright part. Yet you think the shutter is failing? Or what.

Or you mean the camera has an internal light source causing that shadow?

Come on, you do know that shutters have two shutter curtains, which at high speed only expose a slit at a time, right?

The cause is known. Short light flashes and too short exposure times chosen.

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If picture worth a thousand words, how many megapixel is it?

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