Big burly men with large impact drills pounding away on the roof.
Wiseacre camera shop assistants who are outraged when summarily banished for ineptitude,
Photos that come back creased, or incorrectly cut from the lab.
Batteries that inexplicably go flat.
The sun shining brightly when cloud cover is wanted.
The best thing about a bad day is that it ends.
As for the technical details of this picture of I have no idea,
and am too lazy to look.