JVC GR-DVF31 Instruction Manual - Page 27

MENU/BRIGHT Dial Power Switch EXP. 0 L Iris lock indicator EN27 Iris Lock Use this function in the following situations: ● When shooting a moving subject. ● When the distance to the subject changes (so its size in the LCD monitor or the viewfinder changes), such as when the subject is backing away. ● When shooting on a reflective natural background such as at the beach or when skiing. ● When shooting objects under a spotlight. ● When zooming. When the subject is close, keep the iris locked. Even when the subject moves away from you, the image will not darken or brighten. Before the following steps, perform steps 1 through 4 (੬ pg. 26). 5 Adjust zoom so that the subject fills the LCD monitor or the viewfinder, then press and hold MENU/ BRIGHT for over 2 seconds. The exposure control indicator and " " appear, indicating that the iris is locked. Press MENU/BRIGHT. The indication displayed in the upper left corner changes from "EXP." to "MANUAL". To Return To Automatic Iris Control . . . .... rotate MENU/BRIGHT to display "AUTO" then press it in step 4. The exposure control indicator and " " disappear. Or, set the Power Switch to " ". To Lock The Exposure Control And The Iris . . . .... after step 4, adjust the exposure rotating MENU/ BRIGHT. Then lock the iris in step 5. For automatic locking, rotate MENU/BRIGHT to display "AUTO", then press it in step 4. The iris becomes automatic after about 2 seconds. Iris Like the pupil of the human eye, it contracts in well-lit environments to keep too much light from entering, and dilates in dim environments to allow in more light. RECORDING