If an aperture of "00" is displayed on the camera's LCD panel, perform the following steps in order. Check after each step to see if the problem remains, and proceed to the next step if it does. (In some cases, you may see "Err 01" displayed on the LCD panel.) 1. Check if the lens is correctly mounted on the camera. If no lens is attached to the camera, "00" will be displayed for the aperture value. 2. Clean the lens contacts. Turn the camera's power switch to OFF, and then detach the lens from the camera to clean the contacts. Use a blower to blow away dust on the lens. Do not touch both the camera's or lens' electrical contacts with your fingers while cleaning the lens. Turn the power switch to ON again and check the aperture value displayed on the LCD panel. Refer to the Instruction Manual provided with your camera for instructions for detaching or mounting the lens. Also, prevent any foreign materials or dust from getting into the camera through the lens mount, and be sure not to damage the contacts. 3. Remove the battery pack. Turn the camera's power switch to OFF and remove the battery pack. Then reinsert the battery pack, and then turn the power switch to ON again.
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