Moonrise & Aurora

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up vote 8 down vote favorite
1

What do the T and v stand for?

Picture of Canon mode dial.
Public-domain image from Wikipedia.

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See also photo.stackexchange.com/questions/7477/…, and my answer there. – mattdm May 22 '11 at 14:20
There's some argument in the comments/answers to the other question over whether the V is value or variable. – mattdm May 22 '11 at 14:51
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Also, as a geek, I am tempted to answer the question in the title with "1:1, of course!" – mattdm May 22 '11 at 14:53
@mattdm - "1:1" would be better, but the system won't let you submit that short answer... – ysap May 22 '11 at 18:01

2 Answers

up vote 32 down vote accepted

Tv stands for "Time value". Similarly Av stands for "Aperture value".

Source: http://en.wikipedia.org/wiki/Shutter_priority

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Okay everyone. It's a fine answer, but I think we can stop voting it up now. A simple one-liner and a pointer to Wikipedia shouldn't be getting the "Good Answer" badge. – mattdm May 23 '11 at 18:06
Not that I don't appreciate your quick helpfulness, @Vikas. :) – mattdm May 23 '11 at 18:08
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@mattdm +1 just for you buddy – rfusca♦ May 24 '11 at 2:20
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@rfusca: funny. But I'm serious that it's detrimental to the site to over-upvote trivial answers, because it causes the really great answers to be relatively undervalued as they get buried under quick things like this. – mattdm May 24 '11 at 3:15
Additionally, while I believe the answer to be correct, the linked source is actually quite poor, as it's merely an unsourced wikipedia article with nothing to back it. See dougkerr.net/Pumpkin/articles/APEX.pdf for a better one. – mattdm May 24 '11 at 3:17
up vote 3 down vote

TV stands for Time Value. This is basically to indicate that you can set the Shutter Speed manually and the aperture will set automatically depending on the other parameters you've set like the exposure and the ISO. This mode is very handy in case of bird photography, sports photography or anything where shutter speed needs to be constant.

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