Lens flares are common with a high intensity source of light such as the sun or a spark.
“Continue reading” for other lens flare examples.

Here are some examples. In the photo here, there is a mirror image of the intense spark source visible below the main light source.

I put a gram of silicon powder and fired it with aluminium foil at 2 kJ. Just a big flash. I was just about to discard the photo when I saw the green ball.
This is for real and the photo shows it clearly. I have not retouched it other than to put in the markers and reduce the size.
It is of course a lens flare and on the image on the original is 1452 pixels in and 514 down. The flash would be arising from 1452 pixels from the other side and about 500 pixels up – in other words diametrically opposed and confirming the flare. It was too small to be a vortex anyway and wasn’t moving on the 1 second exposure. There are other lens flares pointing down which are yellow and the other is blue. Funny I haven’t seen these much in photos before. Perhaps because I wasn’t looking for them or because the camera was centred on the arc.
Perhaps I need to pull apart another SCR and try the arc welding approach.
I subsequently realized that this pic was not from the silicon shot but from an aluminium and ethanol shot. The silicon was similar but lens flares were still present in a different area and less visible due to the different camera position.

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External links

Lens Flare – Wikipedia
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