Konica Minolta Dimage X1
 

The 3x optical zoom lens was mounted vertically completely inside the
camera body, looking at the outside world via a 90-degree reflecting
prism, in the manner of a submarine’s periscope. This meant that the
camera could be much thinner - just 20mm - than contemporary models with
conventional lenses, and without the delay of extending a long zoom lens
it could be ready to take a picture in just 1.8 seconds, which at the
time was unbelievably fast and is still pretty respectable today. There
have been eight further models in the series, all sharing the same basic
core technology.

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