D50 User's Manual
Page 109
...: AE Lock At the default setting of AE-L Button, exposure can be locked at full power, built-in flash has a Guide Number [m/ft] of TLL, the camera adjusts flash level automatically in the viewfinder and press the AE-L/AF-L button. If +Release Bttn is selected, exposure ...will be taken without releasing FV lock. Selecting Manual allows the user to select the flash level for P, S, A, and M modes from ...
...: AE Lock At the default setting of AE-L Button, exposure can be locked at full power, built-in flash has a Guide Number [m/ft] of TLL, the camera adjusts flash level automatically in the viewfinder and press the AE-L/AF-L button. If +Release Bttn is selected, exposure ...will be taken without releasing FV lock. Selecting Manual allows the user to select the flash level for P, S, A, and M modes from ...