Nikon P5100 P5100 User's Manual - Page 39
Using the Zoom, Digital Zoom and Image Quality
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Using the Zoom Use the zoom control to activate optical zoom. Rotate the zoom control to f (h) to zoom out, increasing the area visible in the frame, or g (i) to zoom in so that the subject fills a larger area of the frame. Step 2 Frame a Picture Zoom out Zoom in Basic Photography and Playback: Auto Mode When the camera is zoomed in to the maximum magnification (3.5×), rotating and holding the zoom control at g (i) triggers digital zoom. The subject is magnified up to 4×, for a total magnification of 14×. When digital zoom is in effect, the camera will focus on the subject in the center focus area. A monitor indicator shows the current zoom ratio. Zoom indicator is displayed when the zoom control is rotated Optical zoom V Zoom indicator turns yellow when digital zoom is in effect B Digital Zoom and Image Quality If possible, digital zoom will create a picture by cropping the area visible in the monitor to the current image size (A 92), increasing magnification without affecting quality. If the crop would be smaller than the current image size, additional pixels are added through a process known as interpolation, creating a slightly "grainy" image. The amount of zoom available before interpolation is used depends on the option currently selected for image size, as shown in the following table. The camera pauses temporarily in its zooming operation when it reaches the maximum zoom ratio possible before interpolation is used. V is displayed when interpolation is in effect. Maximum zoom ratio without interpolation Image size Zoom ratio Image size Zoom ratio F, I, 3.5× (up to the maximum G, H optical zoom ratio) B 8.4× (digital zoom up to 2.4×) A 10.5× (digital zoom up to 3.0×) E 4.2× (digital zoom up to 1.2×) J 13.3× (digital zoom up to 3.8×) D 4.9× (digital zoom up to 1.4×) K 14× (digital zoom up to 4×) C 6.3× (digital zoom up to 1.8×) Digital zoom can be limited to the range at which interpolation is not in effect, or it can be turned off (A 129). 25