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Feb 21, 2011 at 5:08 comment added jrista My Canon manual used the term "variable", and many of the books I've read use the same term (others are based on Nikon gear, which seems to use A and S for the same things.) It makes logical sense, given that when set to that mode, you have the control to "vary" a setting. If you are using Av, the Aperture is a variable setting controlled by a dial, and the same goes for Tv.
Feb 21, 2011 at 3:52 comment added mattdm @jrista: why do you say that it means "... variable"? I just looked in the manual for the Canon 7D, and it says "<Av> stands for Aperture value".....
Jan 23, 2011 at 12:50 comment added Joey Interestingly, I'd rather consider the exposure time variable when shooting in Av since I select an aperture and the camera varies the exposure time. Of course, both are variables, but somehow it feels odd that it's more variable when I'm the one who varies them ;-)
Jan 23, 2011 at 12:24 vote accept gerikson
Jan 23, 2011 at 7:37 comment added jrista Tv does indeed mean "Time Variable", as Av does indeed mean "Aperture variable".
Jan 23, 2011 at 7:30 history answered labnut CC BY-SA 2.5