Why does the ISO value displayed in the viewfinder blink when it is set to ISO 2000 or higher?
At high ISO’s such as 800 and 1600, image noise in the E-30 is very clean and resembles film grain. At ISOs of 2000 and higher, the noise is still relatively clean, but the photographer may not want to change the setting of the NOISE FILTER to reduce image noise-in camera. The blinking ISO serves as a reminder to refer to the NOISE FILTER setting before shooting at high ISOs. The NOISE FILTER options are OFF, LOW, STANDARD and HIGH. Changing the NOISE FILTER option does not stop the ISO value displayed in the viewfinder from blinking.