sentences:  In aperture priority mode, a steadily lit LED indicated the shutter speed automatically set by the electronic microprocessor in response to the light reaching the built-in, open aperture, through-the-lens (TTL), centre-weighted gallium arsenide phosphide photodiode (GPD) light meter and the set lens aperture.The LEDs for the speeds between 1/2000th and 1/60th second were green, while those for 1/30th to 4 seconds were yellow to warn of possible picture blur at the slower speeds.A steadily lit red OVER or UNDER LED came on if the scene was out of the meter's exposure range.