The Nikon N50, released in 1994, features a dot-matrix LCD panel, comprehensive exposure modes, 6-segment Matrix Sensor, 3D Matrix Metering, built-in flash and 6V rechargeable lithium battery. The N50 is a 35mm camera that is a good match for those new to SLR photography, as it comes equipped with advanced auto-focusing and a simple control panel that uses easy-to-identify icons. Troubleshooting the Nikon N50 is quick and easy due to the simple controls and intuitive status screen.
Incorrect Camera Settings
If the settings for the memory mode on your Nikon N50 are unacceptable, change them by entering the "Exposure Mode" menu and press the "Menu" button. This will cause the light above the frame counter to begin to blink. At this point, select the setting you wish to save by pressing the button above the setting, selecting the appropriate value, and then pressing the button above the setting being adjusted again.
"Err Min" Message
The "Err Min" error message is one of the most common errors experienced by new users of the Nikon N50. You will get this error when the camera requires that the aperture be set to 22, which is the smallest setting, for automatic aperture functions and other lens controls to work. The aperture setting can be changed by rotating the selector found on the base of the lens counterclockwise. Once this change has been made, the error message should go away, and the camera should now be able to handle its automatic lens control capabilities.
"Err DX" Message
If your Nikon N50's LCD screen is displaying the error message "Err DX," then you are not using a properly coded DX (Digital indeX) film. DX coding allows the camera to determine the proper speed of the film. To eliminate the "Err DX" error message, switch the camera to "Advanced" mode, where you can set the film speed manually. Check the label on the film package to determine the proper speed setting.
The error codes "Err CPU" or "CPU" indicate that there is either no lens attached to the camera or the lens that is attached does not have a CPU (Central Processing Unit). As a result of the automatic lens features the Nikon N50 has, an AF (Auto-Focus) Nikkor or AI-P lens is required on this camera. When using non-CPU Nikkor lenses, you will need to use an external exposure meter and set the exposure to "Manual." The shutter speed can still be adjusted using the "Set/Adjust" button, but the aperture must be set by rotating the lens' aperture ring. Also, using non-CPU Nikkor lenses means that you will need to adjust the focus manually by rotating the focusing ring on the lens itself.
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