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Shutter-priority AE

This mode gives users the freedom to make changes to the way a moving subject is captured. The aperture value is set automatically to achieve optimum exposure and the input pitch can be set precisely in 1/3-, 1/2-, or whole stop increments (from C. Fn 6-0 to C. Fn 6-2). This mode also offers a safety shift function (C. Fn 16-1), which ensures optimum exposure by automatically shifting the shutter speed when ideal exposure is not possible with the originally selected shutter speed.

As a result, the user never has to miss a photo opportunity due to under-/over-exposure resulting from abrupt changes in subject brightness. This feature was first made available in a Canon SLR with the T70 of 1984 as well as the T90 of 1986 but the EOS-3 is the first EOS model to incorporate this feature. Personally, I prefer to let the camera record any of the exposure errors that I may have overlooked whenever I am using the EOS-1v in its Tv mode so I can know where I may have gone wrong. That's another good thing about a pro EOS camera, giving you the option of custom-tailoring it to fit one's shooting requirements.

The LCD Panel in Tv mode
World 500cc Champion Alex Criville (135mm)
   

Japanese 125cc rider Youichi Ui (600mm)

250cc rider Anthony West in action (600mm)



All the three photos from the above were shot during the 2000 Malaysian Grand Prix. World Champion Alex Criville was photographed upon his return to the pit at 1/60 sec via panning, hence the feeling of motion. Youichi Ui was photographed while he was speeding through one of the straights at the Sepang F1 circuit. Australian Anthony West was photographed, while he was taking a curve, at 1/200 sec at f/8 with the IS 300mm f/2.8L telephoto lens.

The Tv mode allowed me the freedom to concentrate fully on the final image I want to record on film, not only with the EOS-1v but also on any EOS model. I can, for example, shoot a slanted angle, like the Aprilia 250cc rider shown below. Or the two 250cc riders in approaching-the-camera action scene. 500cc rider Max Biaggi was captured at the peak of the EOS-1v's 9 fps firing rate in AI Servo AF mode with the EF 300mm f/2.8L IS USM telephoto lens fitted with EF Extender 2x.

Aprilia 250cc rider (600mm)

250cc riders in action (600mm)

   

Max Biaggi in action (600mm)

A crew member washing the tyre and wheel (35mm)



The crew member washing the tyre and wheel was photographed with the EF 28-70mm f/2.8L USM zoom lens at 1/250 sec at f/6.3. I had the AF point locked onto his face and the EOS-1v delivered the exposure beautifully despite the brighter highlights of his shirt.

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