Nikon EL2 instruction manual Focusing, Infrared Photography

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FOCUSING-continued

Infrared Photography

The plane of sharpest focus for infrared light is slightly more distant than its counterpart for visible light as seen through the camera's viewfinder. Thus, for sharpest fo- cus in infrared photography, adjustments must be made. To compensate for this shift in focus, first focus the image sharply through the viewfinder. Then, turn the focusing ring counterclockwise until the point fo- cused is aligned with the red dot (or line) provided on the lens barrel. For example, in the picture below, the lens has been focused for infinity (°°) infrared shooting. Note that when lenses having a focal length of 50mm or less are used stopped down to f/8 or below, no ad- justment is necessary due to the large depth of field available.

Note: Some new optics using Nikon's Extra-low Dispersion (ED) glass, as well as reflex (catadioptric) lenses, do not require refocusing for infrared photography. Refer to individual lens instruction manuals for details.

Film-Plane Indicator

Under various precision shooting situations, such as close-up photography, it is often necessary to measure the film-to-subject distance to ensure the sharpest focus. The camera's film plane is indicated by the spe- cial mark (-0-) on the upper right top of the camera body. Note that this indicator is 46.5mm from the front surface of the camera's lens mounting flange.

mounting flange front surface)

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Contents Nikon Nomenclature Frame counter Brief Guide to Camera Handling Page Contents Foreword Installing the Battery Preparation for USERemoving the Battery Preparation for USE Prior to Shooting Setting the Film Speed Operation of Camera ControlsSetting the Shutter Speed Operation of Camera CON Setting the ApertureFilm-Advance Lever Frame Counter Shutter Release Button LockOperation of Camera Controls Unloading Film Holding the Camera Shutter Release Operation Operation via Cable ReleasePage Out of focus Focus Focusing Infrared PhotographyDepth of Field Depth of Field Page Exposure Measurement MEn j Exposure Measurement Manual Shutter Speed SelectionAmount of light reaching the film plane is deter Metering Range Metering with a bright area in the center will STOP-DOWN Exposure Measurement 0T\ For automatic diaphragm lenses with no coupling ridgeExposure Compensation Adjustments B4WEV Range of the Camera Auto exposure control at full apertureHow to read the EV range chart Full-aperture meteringSection C Flash Synchronization NikonMirror Lockup Tips on Camera Care Page Changing the Lens Coupling Lever Lock/Release Operation Accessories Auto Winder AW-1Page FEATURES/SPECIFICATIONS Page Nippon Kogaku K.K
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