Catalogue information

LastDodo number
1719157
Area
Photo and video cameras
Model
B 200
Manufacturer / brand
Type
Collection / set
Number in collection
First year of production
Country of origin
Type of film
Negative size
Shutter
Dimensions
Details

With the PRAKTICA B 200 you have acquired a high-quality compact small change single-lens reflex camera whose shutter speeds are controlled fully automatically over a range of 1/1000 s to 40 s. In addition, the camera's microelectronics makes it possible to work with fixed exposure times between 1/1000 s and 1 s and in position "B" with arbitrarily slow shutter speeds. The light metering is done by electronic transmission of the aperture value from lens to camera body at full aperture and thus with an optimally clear viewfinder image. 16 Light emitting diodes (LEDs) along the edge of the viewfinder image inform you about all important shooting data and functions, such as the expected shutter speed, limit values and fully or semi-automatic exposure control. The selected aperture is also visible at the bottom of the viewfinder image. The machine can be manually corrected for deliberate over- or under-exposure. The PRAKTICA B 200 is equipped with a PRAKTICA bayonet mount that ensures fast and reliable lens changes. Technical properties Automatic SLR camera with image size 24 mm x 36 mm; light metering at full aperture by electronic aperture value transmission. Electronically controlled shutter speed continuously set between 1/1000 s and 40 s. Can be switched from fully automatic to semi-automatic with fixed shutter speeds from 1/1000 s to 1 S. Shutter speed indication in the viewfinder by means of light emitting diodes. Indication for under or over exposure. Set aperture mirrored in the bottom edge of the viewfinder image. Automatically set aperture can be corrected manually over a range of ± 2 light values. Exposure memory. Focus on Fresnel lens with new type of triple adjustment wedge, micro grid and focusing screen. Viewfinder image dimensions: 95% of the image size. Synchronization time electron flash 1/90 s (mechanically controlled). PRAKTICA bayonet mount (support size 44.4 mm; inner size 48 mm). Connection for motor drive. Memo holder on camera back. Battery test in the viewfinder. Power source 6V silver oxide battery (eg Mallory PX 28). Gallium-Arsenide-Phosphide photodiode as a light sensitive cell. Metering range: 0 - 17 EV at 21 DIN and aperture 1.4. Camera body dimensions: 138mm x 87.5mm x 49mm. Weight (body without battery): 530 g. Self-timer (delay approx. 8 s) with clamping lever. Names of the parts 1 Film sensitivity setting ring 2 Rewind button 3 Rewind lever 4 Window for mirroring the aperture value 5 Film advance lever 6 Image counter 7 Depth of field control lever 8 Self-timer tension lever 9 Shutter release button for self-timer 10 Release button 11 Filter thread 12 Aperture ring 13 Flash contact 14 Exposure compensation setting button with setting mark 15 Release button for correction button 16 Button for battery test and for holding the light measurement value 17 Center contact 18 Hot shoe 19 Setting button fixed shutter speeds and "automatic" with setting mark 20 Shutter release 21 Connection for cable release 22 Release lock with setting mark 23 Eye for carrying strap 24 Adjustment mark for changing lenses 25 Depth of field scale 26 Spacer ring 27 Eyepiece with mount for accessories 28 Shutter 29 Film cassette compartment 30 Film take-up roller 31 Film take-up reel 32 Knurled wheel 33 Back wall 34 Lock knob for battery compartment 35 Battery compartment cover 36 Motor Drive Contacts 37 Adjustment for motor drive 38 Clutch for motor drive 39 Film rewind release button 40 Tripod thread 41 Memo holder 42 Eyepiece cover (see p. 40) Brief instructions for automatic exposure control These getting started instructions in no way replace the requisite knowledge of all the instructions given in this booklet regarding the use of the camera. Insert battery When doing so, observe the polarity signs (+) and (-) on the inside of the cover (35) of the battery compartment. Insert film Pull up the rewind button (2); the camera back wall now springs open. Load the film Set the setting dial (19) to "" or a fast, fixed shutter speed. Place 35mm cassette in the film compartment (29). Press the rewind button (2) down again. Insert the film leader sufficiently far into the slot (31) and turn the take-up reel with the knurled wheel (32) in the direction of the center of the camera until the cam wheels engage in the film perforation. Pull the film advance lever (5) all the way to the stop to check that the film is actually fed. Close the back wall Prepare for the recording Pull the film advance lever in turn and press the release button until the number "1" appears in the frame counter (6). Set the setting knob (19) back to "automatic" Set film sensitivity Pull the setting ring (1) up and turn so that the desired number is aligned with the setting mark. Set desired aperture Set the desired aperture with the aperture ring (12). Focus Triple adjustment wedge: The camera is in focus when the contours and lines of the subject appear naturally. Micro grid: The correct image sharpness is achieved when the image is clear and free from light glare. Matte area: Used in low light (e.g. close-up shots): the image should be clear and sharp. Releasing the shutter The machine is switched on by lightly pressing the shutter release button (20); light-emitting diodes indicate the shutter speed. If the shutter speed matches the subject, the shutter release can be released; if not, a different aperture must be selected. Change film Press the release button (39), fold out the rewind lever (3) and turn in the direction of the arrow until the resistance is released. This indicates the end of the movie has been reached. Pull out the rewind button (2) completely (the back wall opens) and remove the film cassette from the camera. Change lens Press the release button (10) and turn the lens anti-clockwise as far as it will go and remove it from the mount. Press the other lens against the camera body so that the red marks line up, and turn clockwise until it clicks into place. Insert battery A silver oxide battery - Mallory PX 28 or a similar type - with a nominal voltage of 6 V is used to power the exposure meter, computer control and light emitting diodes. A new battery lasts approx. 2 years with normal use. To insert the battery, turn the locking knob (34) of the battery compartment cover (35) counterclockwise until the cover can be opened. Wipe contacts in the battery compartment and the new battery with a dry cloth. Place the battery with the positive pole against the contact spring (note the polarity signs on the inside of the cover) and allow it to tilt into the battery compartment. Press the lid closed and close with the locking button. Battery test The shutter must be cocked. Press the shutter release button (20) and battery test button (16). If the light-emitting diodes are clearly visible, the battery still has sufficient voltage. When the battery is exhausted, the LEDs light up almost or not at all. No battery test is possible in "B" and flash recording "" mode. Particular attention should be paid to the battery and the associated contact points. These should be checked regularly and cleaned if necessary. The battery is sensitive to very low temperatures and must be protected against this if necessary. If the camera will not be used for an extended period of time, remove the battery. Insert film Pay attention! Before the film is placed in the camera, the shutter speed dial (19) must be set to flash recording "" (approx. 1/90 s) because long exposure times can occur in "automatic" mode. The transport lever cannot be pulled until the shutter is released. Do not force anything. If necessary, a slow shutter speed can be canceled by switching from "automatic" to "B". Open the back wall Pull the backwash button (2) out completely so that the back wall pops open. Unfold the back panel completely, the image counter (6) automatically jumps to zero. Place the cassette in the cassette compartment (29), press the rewind button (2) all the way in and, if necessary, turn it slightly. Insert the leading edge of the film at least 1 cm into the slot in the film take-up reel (31). Then turn the take-up reel on the thumbwheel (32) about one full turn in the direction of the center of the camera. The teeth of the film transport roller (30) must engage in the film perforation. Check that the film is properly "caught" by the take-up reel by carefully pulling the transport lever (5). Close the back wall Grasp the rear wall in the middle of the clasp and press against the camera housing until the clasp audibly clicks shut. Prepare for recording The transport lever (5) can be set to a free position without transporting the film. This ready position ensures a better hand-fit when shooting quickly in succession. Turn the transport lever all the way to the stop, return it to the starting position and then release the shutter with the shutter release (20). Repeat the procedure until the automatic frame counter (6) shows the number "1". Set film sensitivity Pull up the film sensitivity setting ring (1) and turn until the desired DIN / ASA value aligns with the corresponding setting mark. When released, the ring clicks back in. As an extra reminder about the type of film inserted, you can slide the torn-off lid of the film box into the memo holder (41). Automatic exposure control The PRAKTICA B 200 works automatically in "automatic" mode and with a shutter speed set continuously between 1/1000 s and 40 s. The required shutter speed is determined electronically on the basis of the light conditions, the preset aperture and the film sensitivity. Light-emitting diodes along the edge of the viewfinder image indicate the automatically selected shutter speed. Any over or under exposure is also indicated (OVER / UNDER). Because light is measured through the lens, factors that affect exposure such as focal length of the lens, filters, focal lengthening accessories, etc., are automatically taken into account. When using lenses with PRAKTICA thread (M 42 x 1) by means of an adapter, the light is measured at working aperture. Aperture priority By turning the aperture ring (12), the desired aperture value is set opposite the setting mark on the lens mount. The set aperture value is displayed at the bottom of the viewfinder image. As a guideline for the aperture to be used, the following value could be used for a film with a sensitivity of 20 DIN / 80 ASA: Diaphragm Sun 8-11 Cloudy 4 - 5.6 Close-ups no smaller than 8 The aperture can also be determined according to the desired depth of field of the subject (foreground, intermediate range, background), whereby the shutter speed indicated in the viewfinder must be observed due to the risk of camera movement. See also the chapter "depth of field". A large aperture value produces a large depth of field, a small aperture value a correspondingly smaller depth of field. Automatic exposure indication Turn shutter speed dial (19) to "automatic". The electronics are switched on by lightly pressing the shutter release button (20). In the viewfinder, the shutter speed selected by the automatic transmission can be read next to an illuminated light-emitting diode. If the shutter speed selected by the automatic mode turned out not to be in accordance with the subject, it could be corrected by selecting a different aperture value. This is for all normal times over the range of 1/1000 s. . . 8 s a light diode present; intermediate values of the stepless setting are indicated by simultaneously lighting up two adjacent diodes. Shutter speeds between 8 s and 40 s are indicated by a steady light emitting diode next to "UNDER". Undershooting of the value 1/1000 s resp. exceeding 40 s is indicated by a flashing LED next to "OVER" or "UNDER" respectively. In these cases the shutter is always set at 1/1000 s resp. 40 s sent. The use of a tripod is recommended at shutter speeds of 1/15 s and slower. Releasing the shutter After checking the shutter speed in the viewfinder, the shutter can be released by further pressing the shutter release button (20). The electronics are automatically switched off when the shutter release is released. Releasing the shutter during slower shutter speeds will not affect exposure. In this case, the automatic transmission will not turn off until the shutter speed has elapsed. If the shutter speed is to be stopped prematurely at a very slow shutter speed (for example after accidental release of the shutter), the shutter speed dial (19) can be briefly set to "B". If the eye is not behind the viewfinder with automatic exposure control (for example, when shooting from a tripod), the eyepiece cover (42) supplied with the camera must be slid onto the mount of the eyepiece (27). Memory of the exposure automatic Is the subject particularly high in contrast, such as dark-clad persons in sunlit snow, or bright subjects against a dark background, then the exposure value must be determined by an individual light measurement at the most important picture elements from close by. The metering value obtained with this close-up measurement is remembered and the image composition can then be changed without changing the exposure. To memorize the measurement value, the shutter release (20) is pressed lightly (light measurement) and the memory button (16) is pressed briefly (memorized measurement value). The shutter must be cocked! After that, no further measurement takes place until the shutter is released; the shutter chooses a shutter speed according to the exposure value stored in memory. By releasing the shutter release button, which switches off the electronics, the stored measured value is deleted again. Correction Another option to individually influence the exposure is provided by the adjustment dial for the exposure compensation (14). Such corrections are necessary for high contrast images, for example dark objects against a light background (+1; +2) or light objects against a very dark background (-1; -2). To do this, press the release button (15) and turn the button (14) to the desired position. Based on the basic measurement, when setting to +1 resp. +2 increased shutter speed by 1 and 2 exposure values respectively. Similarly, ar is shortened when set to -1 and -2 respectively. The correction knob is adjustable in half values. At the limits of the film sensitivity range - 12 DIN and 36 DIN - a correction with 2 steps is also possible (which then corresponds to 6 DIN or 42 DIN). An extension of the shutter speed range beyond the values 1/1000 s and 40 s is not possible with the correction button. Pay attention! After such a correction, the knob must be returned to its home position (O position). Fixed shutter speeds The PRAKTICA B 200 can be switched to fixed shutter speeds, so that you can work with fixed shutter speeds for reproduction work, technical-scientific images, etc. You then have access to fixed shutter speeds from 1 s to 1/1000 s and in position "B" over arbitrarily slow shutter speeds. The desired time can be set in advance with the shutter speed button (19). The camera is thereby simultaneously switched to semi-automatic. As with automatic exposure, a light press on the shutter release activates the camera's electronics. Exposure control is also possible with the help of the light emitting diodes in the viewfinder. In this case, the light emitting diode corresponding to the set shutter speed flashes while another simultaneously indicates the optimum shutter speed according to the lighting conditions, film sensitivity and selected aperture by means of constant lighting. (For words in between, two adjacent light emitting diodes light up.) The camera is now set by changing the aperture or shutter speed so that the flashing light emitting diode (LED) in the viewfinder moves to the steadily lit light emitting diode, once the correct setting is reached. , to disappear entirely. When set to the flash symbol "" and "B", no LED indication is given. If a shutter speed of 1/15 s or slower is chosen, a tripod is required. The flash time (1/90 s) is mechanically controlled, all other shutter speeds including "B", electronically controlled. I.e. Shooting without the battery in the camera is not possible, except for the flash time. However, the automatic aperture of the lenses will always work. Hold the camera TN The illustrations opposite show the different ways to hold the camera when shooting in vertical and horizontal format. Hold the camera steadily and firmly and rest your elbows against your body. In this way you achieve flicker-free recording. Flash photography The use of a flash is recommended when the available light (eg indoors) is insufficient to be able to photograph safely and from the dog or when the subject needs extra "brightening". All types of electronic flashes can be used. Slide the flash into the hot shoe (18), the electrical connection is automatically established (center contact). Flash units without center contact are connected to the flash contact (13) at the front of the camera sleeve. The simultaneous use of two flash units is possible because the two connections (center contact and flash contact) are completely electronically separated from each other. For electronic flash units, set the shutter speed dial (19) to "". The required shutter speed (approx. 1/90 s) is reached by mechanical means. Shutter speeds can also be set slower than 1/125 s. The aperture setting depends on the guide number (for a given film sensitivity) of your flash and the distance. Changing the lenses Press the release button (10) and turn the lens anti-clockwise as far as the stop. Remove the lens from the camera. Place the lens in the camera so that the red markings (24/10) on the lens and camera are opposite each other. Press the lens against the camera body and turn it clockwise until the lock engages audibly. With the help of the PRAKTICA adapter, all original PRAKTICA lenses with M 42 x 1 thread can be used. Lenses from other manufacturers with M 42 x 1 screw thread must be suitable for PRAKTICA cameras and for measurement at working aperture. The PRAKTICA B 200 also works fully automatic in combination with threaded lenses without any restrictions. Only the light metering takes place at working aperture. Focus Focusing is possible on a triple adjustment wedge, a micro grid or the focusing screen. Triple adjustment wedge (1) The image sharpness can be set very precisely with this adjustment wedge. The image is optimally sharp when contours and lines follow their natural course. In case of blur, a clear shift is visible. Micro grid (2) The correct image sharpness is set when the image within this grid is clear, calm and without glare. Frosted glass (3) Particularly beneficial for loupe and micro pictures as well as for lenses with relatively low brightness (aperture value greater than 4). The image should appear bright and clear on the frosted glass. Depth of field scale The limits of the depth of field at the different aperture values can be read from the depth of field scale (25) of the lens: Example: Distance: 3 m Aperture Number: 8 Depth of field: ranges from approx. 2m to 5m Infrared recordings For infrared images, a small correction of the focus is necessary, turn the distance value found during focusing opposite the infrared setting mark (see arrow) on the lens. Depth of field control Depth of field can also be judged in the viewfinder. To do this, the depth-of-field control button is moved upwards. Metering should not be carried out or the shutter released, as otherwise incorrect exposure may occur. Relaxer The shutter release (20) contains several functions for easy operation. The electronics are switched on by slightly pressing the shutter release button up to the pressure point. Pressing the shutter release button further releases the shutter. To prevent unnecessary power consumption by accidentally switching on the electronics and inadvertently releasing the shutter, it is a good idea to lock the shutter before storing the camera in the ready or combi bag. Locking the shutter release It can be locked by turning the ring (22) fitted around the release button clockwise. To release the shutter release, the ring is turned counterclockwise. Pay attention! Never lock the shutter in the depressed state. Self timer Tension the shutter, turn the clamping lever (8) of the self-timer down to the stop and start the self-timer by pressing the shutter release button (9) in the pivot point of the lever. Running time approx. 8 s. Do not cock the shutter while the self-timer expires! In automatic operation, cover the eyepiece with the eyepiece cover to prevent incorrect light measurement. Change film The frame counter (6) indicates the number of exposed frames in the film. If the film has been exposed according to the number of frames in the film (red marks at 20 or 36), the film must be changed. Press the release button (39) until it clicks into place. Fold out the rewind lever (3) to turn, not too quickly, in the direction of the arrow (clockwise) until the increasing resistance followed by very light turning of the lever indicates the end of the film. Pull the rewind button all the way out. The back wall will now click open. Remove the film cassette from the camera. Never change films in direct sunlight. Pay attention! If more pictures have been taken on the film than indicated on the packaging, it is possible that the transport lever could no longer be folded out completely. Do not force anything else, but rewind the film. Maintenance of the camera Never use organic solvents such as spirit paint thinner, etc. to clean the camera. You should protect the camera against impact, dust and dirt. Clean the film compartment, film channel and back wall from time to time with a soft brush. In particular, do not press against the shutter blades or touch the shutter blades with your fingers. Only in extreme cases dust the mirror very carefully with a brush. In the range of 40 ° C to -10 ° C the camera works without problems. Outside this range, deviations can occur for various reasons in the mechanical and electrical / electronic functions. Sudden temperature changes can cause condensation to form, which in turn can lead to corrosion damage. We request that you carefully follow all instructions given in this manual. Improper use of the camera could lead to malfunctions, repairs falling outside our warranty terms. Due to further developments of the PRAKTICA B 200, minor deviations in these operating instructions may occur.

This text has been translated automatically from Dutch

Click here for the original text