DESCRIPTION OF THE INSTRUMENTZEISS Controls and functional elements on microscope components Axioscope 5/7/Vario36 430035-7344-001 03/20182.5 Controls and functional elementson microscope components2.5.1 Binocular photo tube 30°/23(100:0/0:100)The photo port (710HFig. 2-8/2) of the binocular tubecan be used to mount a reflex camera, amicroscope camera or a video camera with the aidof appropriate adapters.Using the shift knob (or the push-pull rod on otherphoto tubes), the light can be directed to theeyepieces or to the mounted camera.− Shift knob (711HFig. 2-8/3) in forward position(eye symbol):100% light to the eyepieces− Shift knob (712HFig. 2-8/3) in back position(camera symbol):100% light to the camera− Push-pull rod (713HFig. 2-8/1) pushed in:Eyepiece shutter is closed.− Push-pull rod (714HFig. 2-8/1) pulled out:Eyepiece shutter is open.− Whenever you want to take photos with a long exposure time, we recommend that you block anyambient light from entering the eyepieces by using the tube shutter or the eyepiece cover (includedin the dust protection kit). If neither is available, remove the eyepiece and place the included dustprotection caps over the eyepiece barrels.− Vary eyepiece distance by moving the eyepiece barrels apart or together.NOTEFor polarization microscopy, we recommend using the Pol photo tube with upright image andone eyepiece reticle (graticule).Fig. 2-8 Binocular photo tube
