Camera Usage Rules
To use the camera correctly, it is first necessary to follow the instructions provided in the manual that comes with it. The camera should be protected from dirt and mechanical damage, and should not be stored in a damp environment. Humidity causes corrosion of metal parts, leading to damage to the optics and the antireflective coating of the lens film.
It is not recommended to use the camera in bad weather. If raindrops or snowflakes get on the camera, they should be wiped off immediately after the shooting session. If the camera has been in water, it should be fully disassembled and cleaned immediately. The camera should also not be exposed to sudden temperature changes. In cold weather, it is recommended to keep the camera under a coat and only take it out for photographing. If the camera is brought from the cold into a warm room, it will condense, so to avoid this, do not open the case. The camera should remain in the case until it warms up to room temperature. The case protects the camera from mechanical damage and various contaminants. Shocks cause damage to all nodes and parts, especially the lens and rangefinder, which leads to scratches on the film and causes premature wear of the mechanism's surfaces.
When removing the camera from the case, it should be held only by the lower edge of the lens mount. Do not touch the lens and rangefinder lamps to avoid stains and scratches on the lenses and glass. Also, do not touch the viewfinder protective glasses and rangefinder, as well as the internal parts of the mechanism.
The surfaces that rub should be lubricated with clock bone oil.
Spare cassettes with film should be stored in special boxes, as dust and tobacco, getting onto the cassette velvet, can scratch the film. Places that have become exposed inside the camera should be covered with matte varnish.
Lens Usage Rules
The camera lens should always be covered with a cap or filter when not in use. It is strongly recommended not to remove the filter at all, especially when using the SZ-12 filter, which does not significantly affect the results of the photography. Do not touch the surface of the lenses with your fingers, as fingerprints negatively affect the glass. The lens should be stored in a dry place at normal temperature. High temperature is harmful because the oil that lubricates the friction surfaces evaporates and settles on the lenses.
Before cleaning the lens surface, remove the dust with a stream of air from a rubber bulb or brush it off with a cotton swab, as hard particles can scratch the lens surface during wiping. Clean the optical surfaces with a tampon made of hygroscopic cotton wool soaked in a mixture of 90% petroleum ether and 10% alcohol, or if ether is unavailable, use pure alcohol. The use of salt and acid solutions is unacceptable.
To clean the parts and units of the camera, a cotton tampon should be tightly wound on a wooden stick. Do not touch the tampon with your hands, as skin grease can contaminate it, making cleaning difficult. The lens to be cleaned should be wiped in circular motions, starting from the center to the edge. Clean several times in a row, replacing the cotton tampon each time. Do not wet the tampon excessively. There should be no excess liquid in the cotton tampon, as dripping it under the lens. To prevent this, it is recommended to disassemble the lens. Often there are particles and snags on the lens surfaces. Do not wipe the lenses with a cloth, rag, or suede. Brushes and cotton wool soaked in alcohol contaminate the surface. During use, the camera should be kept wrapped in cigarette paper and the lenses and rangefinders should be covered.
The filter is attached to many lenses using a thread on the lens mount and the filter.
Since the surface for threading is small, it is cut with a very small step — 0.5 mm.
The diameter of the filter is relatively large, and the slightest misalignment during tightening leads to thread jamming.
A number of lenses, such as "Jupiter-3", "Jupiter-9", have a lens block that is not attached to the outer mount, but only tightly clamped; you should not exert great effort when unscrewing the filter, as you may unscrew the entire lens block with the diaphragm.
Therefore, when screwing the filter into the lens, you should slightly turn the frame to the left until the threads align, and then slowly screw it in. Do not screw the filter tightly to the end.
A number of lenses, such as "Jupiter-3", "Jupiter-9", have a lens block that is not attached to the outer mount, but only tightly clamped; you should not exert great effort when unscrewing the filter, as you may unscrew the entire lens block with the diaphragm.
Therefore, when screwing the filter into the lens, you should slightly turn the frame to the left until the threads align, and then slowly screw it in. Do not screw the filter tightly to the end.