User manual POLAROID MICROCAM

[. . . ] User Guide (ENGLISH VERSION) MicroCam 1 a b 2 c d h g f 3 e i 4 6 j A m k O I + 331 337 339 o n 5 l m ­ 7 8 9 10 11 12 13 14 15 + 1 16 339 ­ x 4. 0 x 2. 0 x 1. 0 x . 50 x . 25 17 c b a 18 q r 19 d e f g h i j k l 6 OFF 4 m n 20 21 22 3. 5 2 p o 23 English 3 Introduction The Polaroid MicroCam is designed to provide instant photographic capability to a wide variety of light microscopes. The camera is simple to operate, and is easily attached to the microscope's viewing tube, in place of the eyepiece. (Note: The camera also can be attached to the phototube, if preferred. ) The camera can make automatic exposures ranging from 1/60 sec. to 161/2 minutes; it also can be set for manual operation to make longer exposures. [. . . ] Press the button a second time to end the exposure. > 16:30 Special exposure techniques Exposure meter The camera has a built-in exposure meter that is used in Automatic mode. When you press the shutter button, the meter measures the light from the specimen, calculates the exposure time and then displays the time for a few seconds before beginning the exposure. You can cancel the exposure before it starts by pressing the shutter button a second time, and use the exposure indicated when making manual exposures. Reciprocity correction When set for Automatic mode, the camera will automatically adjust the exposure time to compensate for reciprocity failure. The camera contains a built-in color conversion filter that moves into position when needed. The filter adjusts the color temperature of the tungsten/halogen microscope illuminator (2800-3400°K) to more closely match the color balance of the film (5500°K). Additional light-balancing filtration will not be necessary for most situations. English 9 Xenon lighting Microscope information Because of the great variety of microscopes that are compatible with the MicroCam, this booklet cannot provide specific details for all equipment. You should refer to the instructional material provided with your microscope, or contact the supplier for more information. One of the most important microscope adjustments for photography is the illumination. The microscope illumination must meet specific criteria: The beam of light must be correctly concentrated and adjusted to provide even illumination over the entire picture area, as the camera cannot compensate for uneven lighting. Please refer to the "universal" microscope illustration (17) for the location of microscope controls. Note: Some older microscopes utilize optics in the eyepiece to correct for chromatic aberration. An adapter will be required to produce optimum resolution with the MicroCam. (Contact Polaroid Technical Assistance for information. ) If using a Xenon (daylight) microscope illuminator with color film, set the camera for Type 331 black & white film, to remove the built-in filter. Koehler illumination provides even lighting and, in addition, enables the objective lens to produce optimum resolution. Alignment and focus of the substage condenser and the field diaphragm 1 Place a specimen on the stage and focus it accurately. Slowly close the aperture diaphragm of the substage condenser to a point where you see a distinct reduction in brightness through the eyepiece. (See also Adjusting the aperture diaphragm. ) 2 Close the field diaphragm to its smallest setting. Viewing through the eyepiece, raise or lower the substage condenser until the edge of the field diaphragm is sharply focused with the specimen image (19). 3 Open the field diaphragm to about 3/4 of the visual field and refocus the edge of the diaphragm, as above (20). English 11 4 Align the substage condenser by centering the image of the field diaphragm, using the condenser's radial centering screws (21). If necessary, refocus the condenser once again, to keep the field diaphragm in sharp focus with the specimen image. 5 Open the field diaphragm until it is just outside the field of view or, for photography, until it is just beyond the area of the film format (22). Do not open it any farther, since this could cause flare and a loss in contrast. Adjusting the aperture diaphragm The simplest method of adjustment is to close the aperture only far enough to notice a loss of brightness. [. . . ] The camera should be packed in its original shipping carton or other sturdy container, and shipped, prepaid and insured, to the nearest Polaroid Office (addresses at end of book). Polaroid Service Centers and Offices California Polaroid Corporation 3232 West MacArthur Boulevard P. O. Box 25200 Santa Ana 92799-5200 Tel: (714) 641-1200 Deutschland Polaroid GmbH Sprendlinger Landstrasse 109 6050 Offenbach 1 Tel: (069) 8404-1 New Zealand Polaroid New Zealand Ltd. Camera Services 24-26 Anzac Avenue Auckland Tel: (09) 377 3773 Mailing address: P. O. Box 37-046 Parnell, Auckland 1 España Polaroid (España) S. A. [. . . ]