1) Center the AF from ('[ ]" mark) over the main subject.Do not touch the lens' moving parts during AF focusing.2) Press the shutter button halfway and automatic focus (AF) starts. When correct focus is obtained, the greenAF in-focus indicator lights up in the viewfinder and the AF focus signal (short electronic beeper tone) sounds.· Original focus remains locked, even if the subject or focusing distance changes as long as the shutter button isheld halfway.· When AF is impossible, the green AF in-focus indicator will start blinking and the shutter will not release. (seepp. 54 to 56.)4. Exposure1) Gently press the shutter button halfway to check the exposure.Exposure will be correct if the shutter speed and aperture values remaincontinuously lit at the bottom of the viewfinder.· Once the shutter button is pressed halfway, the display is held on forapproximately eight seconds.· When the automatically-set shutter speed is too slow to hand-hold, thecamera-shake warning sounds (long electronic beeper tone). Werecommend using a tripod or a flash.· If correct exposure is not possible, both the shutter speed and the aperture blink to warn you.Underexposure warning--Switch to flash photography.· In underexposure warning, the maximum aperture of the lens in use blinks. (The blinking shutter speed isalways 30".)Overexposure warning--Use an ND (neutral density) filter.· In overexposure warning, the minimum aperture of the lens in use blinks. (The blinking shutter speed isalways 2000 with the EOS 650 and 4000 with the EOS 620.)Display Panel Illumination (EOS 620Only)2) Compose the picture and while continuing to holddown the shutter button gently press the shutterbutton completely to take the picture.· The camera automatically advances the film to thenext frame.· Set the main switch to "L" to turn off thePress the display panel illumination button to illuminatethe display panel for approximately eight seconds.· To turn off the illumination within eight seconds pressthe display panel illumination button again.This camera is equipped with advanced "evaluative metering" so it automatically recognizes lighting conditions,subject pat" tern, and even subject size in the picture area. Even when there is a difference in brightnessbetween the main subject and the background (e.g. backlit photography), correct exposure can be obtainedwithout exposure compensation.