The name for shutter priority mode on Canon and some other cameras. Tv stands for "time value". You choose the shutter speed, and the camera sets the aperture to give the correct exposure. Other brands mark the same mode with S.
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Martin Kaninsky
Martin is the creator of About Photography Blog. With over 15 years of experience as a practicing photographer, Martin’s approach focuses on photography as an art form, emphasizing the stories behind the images rather than concentrating on gear.