Nikon 1723 Instruction Manual - Page 80

Auto Exposure Lock When you want to control the exposure of a specific area within a scene, measure the exposure on that area and press the f:1D button to lock the exposure, then recompose the picture. This function is useful when there is a pronounced difference between the brightness of an area you want to set the exposure on and the area surrounding it. Set exposure to a mode other than .M.a.n.ua.l 1 Position focus area on subject and lightly press the shutter release button, then press the tID button. Confirm focus indicator. appears in the viewfinder. r • When the tID button is pressed , Center-Weighted metering is automatically selected and exposure at the 12mm-diameter circle at center of frame is locked and remains locked as long as the button is kept pressed . mI!lliI i : Metering system in the Auto Exposure lock can be changed (page 75). • At initial setting , the exposure metering system automatically changes to CenterWeighted Metering when Auto Exposure lock is performed. However, it can be set to Matrix or Spot Metering using the Custom Setting. • When Spot Metering is selected, exposure on the 4mm-diameter area within the focus brackets (approx. 1% of the total frame) is measured . Note that the measured focus area differs with the AF Area mode selected . • When Dynamic AF Mode with Closest-Subject Priority (p. 47) or Dynamic AF Mode with Center-Subject Priority or Center Area Mode (p. 47) is selected: Exposure on the center focus area is measured. • When Dynamic AF Mode or Single Area Mode is selected (p. 47): Exposure on the selected focus area is measured . 80