Canon manual 53

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degree of LED illumination changes in four stages depending on the brightness of the subject seen in the viewfinder. When the subject is brighter, the LED brightness is slightly higher, and it is slightly lower with a darker subject. As a result, the LED maintains an almost consistent degree of brightness to the human eye.

The viewfinder information signal is transmitted to the display every half second. Accordingly, in rapidly varying light con- ditions, the changes in aperture or shutter speed will be indicated slightly behind time. This is a concession to the adjustment limitations of the human eye which in no way affects exposure timing.

Cancelling the Viewfinder Display With the A-1, you have the option of turning off the viewfinder display altogether. This can be done simply by turning the view- finder display lever to the white dot. Metering is taking place and the shutter can be released for a correctly exposed image even when the display is switched off, but it saves battery power and gives you absolute freedom to focus and compose the image undisturbed.

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