Per this question I looked at this article and in the second entry labeled "People and Space: winner" there is that quote from the photographer that it was produced using "525 separate exposures". [*] What is involved with that process? How would I go about replicating that technique?
[*] It is clear from reading the answers to that question that in this particular case the photographer did not in fact use this technique. But still curious how "525 separate exposures" could work.
Answer
An exposure is what happens in the camera from the time the shutter opens to the time it closes.
525 exposures basically means this happened 525 times. You can combine any number of exposures and some cameras have modes to automatically do that for you. With multiple exposures you can any one of:
...and I probably forgot some but all of those can be used to produce image in very low-light, although an HDR / Exposure-Fusion bracket of 525 would be a bit much. Note that you can combine techniques which causes the number of images needed to multiply.
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