Nikon EM Owner’s manual– 15 –IX. Tips on camera careDon’t force your camera’scontrols — they are designed towork with a minimum ofpressure.Clean all lens surfacesperiodically with a blower-typebrush or lens tissue moistenedwith an approved photo lenscleaning liquid.Avoid touching the camera’sinterior surfaces, especially thereflex mirror shutter curtainsand film pressure plate.If you drop the cameraaccidentally, take it to a Nikonauthorized dealer or servicecenter for immediate servicing.Store your camera, lensesaccessories in a cool, dry place.Remove the batteries when thecamera or accessories are not tobe used for an extended period.Dispose of used batteriesproperly — never throw theminto fire. For batteryperformance by brand, refer tomanufacturer’s literature.X. SpecificationsType of camera 35mm single-lens reflex (SLR), aperture-priority automatic.Picture format 35 mm (24 mm × 36 mm film size).Lens mount Nikon bayonet type.Lenses usable Nikon Series E 50 mm ƒ/1.8 as Standard; other Series E lenses; Al-typeNikkor lenses and others.Shutter Electronically controlled, vertical-travel, metal focal-plane shutter;stepless speeds from 1 sec. to 1/1000 sec. when shutter operation modeselector is set to AUTO; 1/90 sec. mechanical shutter speed when setto M90; B setting also provided for long exposures.Film advance Film winding lever provided completed stroke of 144° simultaneouslyadvances film, cocks shutter and operates frame counter; choice of onecontinuous stroke or series of shorter strokes.Viewfinder Fixed eyelevel pentaprism full aperture viewing type with built in TTLexposure meter; shutter speed scale and exposure needle visible inside;ready-light lights up when SB-E or SB-10. Speedlight is in use, center ofscale’s bracket indicates 1/90 sec.; finder coverage approx. 92% of picturefield; 0.86ˣ magnification with 50mm lens set at infinity.Focusing screen Fixed-type Nikon “K” screen; comprises matte fresnel field with centralsplit-image range finder spot surrounded by microprism ring and 12mm-dia. reference circle which denotes area of center- weighted metering.Reflex mirror Instant return, non-lockable type.Self-timer Lever provided can be set for up to approx. 10-sec. exposure delay; settingcancellable before shutter release button is pressed.