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Green Ghosts

I have noticed one isolated image artifact which I am unable to explain. The frames below in Fig. 4 were taken in an underground parking garage lit by sodium vapor lamps. In the Leica M8 frame there are very clear green ghosts on the left side of frame, of the bright light fixtures on the other side of the frame. These can be seen more clearly in Fig. 5 which is a 100% crop. No image processing from the raw file other than a white balance on the cement floor has been done. The Canon 5D shot is shown as a point of reference. My original intention had been to use these shots to compare high ISO performance, but the green ghosts became more significant as I examined the files on-screen.

Canon 5D / ISO 1600 / Crop

Leica M8 / ISO 1250 / Crop

Figure 4

Leica M8 @ 100%

Figure 5
As I wrote above, I am at a loss to explain these. They do not appear to be optical artifacts, yet it is hard to imagine how they can be sensor artifacts. I have tried to duplicate this u...

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Michael Reichmann is the founder of the Luminous Landscape. Michael passed away in May 2016. Since its inception in 1999 LuLa has become the world's largest site devoted to the art, craft, and technology of photography. Each month more than one million people from every country on the globe visit LuLa.
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