Originally posted by hray K-x blaze: I thought it might be seconds, but was thinking of angles, degrees, radians..and couldn't figure out how seconds worked there. Duh!!!
Well you're not alone, I first thought it was Inches.
So it's not us, it's just the old brain-dead imperial measurements system doing what it does worst.
The
double prime symbol ″ (no it's actually not double quote ") can stand for
inches,
arcseconds, and (sometimes)
seconds [which the latter is common and can then be confused as angular* or time unit -- *so please... let's all hurry up and adopt radians instead of the present
degree system (that also applies to temperature) and drop all this conflicting bullshit].
.R. -- Prime [sic] source of Trivia and useless information.
And just in case anyone's interested, the triple prime ‴ symbol represents a
ligne. (that predates the metric system and used now only applies to watches though, not cameras - and ironically it's a distance [2.2558 mm], not a time measurement)