How does the TTL meter work?
Instructions for use of the Kiev 88 TTL metering prism finder: • Prism requires three (3) Maxell LR-44 batteries or equivalent. • Turn innermost dial (w/red arrow) to set ASA/ISO in window. • Rotate silver ring to line up maximum aperture opening of lens with arrow. • Depress red button with forefinger while looking through prism. Notice two red lights which will stay on for approximently 20 seconds. During this time, rotate outermost ring on the lens until both lights are on simultaneously. If just one light comes on it denotes either under- or over-exposure. When both lights are on at once (or blinking together), correct shutter speed will read in line with desired aperture on the lens ring. Set the shutter speed on camera body and shoot.
