I used to be a keen photographer back in the days of 'proper' cameras and film but like many others I've embraced the digital age..... But don't claim to fully understand it!

Have any of you had that strange occurrence where, for some reason, your digital camera doesn't recognise part of your composition during image processing and you end up with a ghostly void?

If so.... What causes it and what was the strangest or most bizarre effect you've seen?