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التصوير الفوتوغرافي الحديث
معدات الغرفة المظلمة ..
تخطيط الغرفة المظلمة ..
مدخل الغرفة المظلمة ..
تهوية الغرفة المظلمة ..
DARKROOM LAYOUT
The layout of a darkroom - the orderly arrangement of its working space and facilities - is of the greatest importance . Space alone is not enough ; it is the efficient utilization of that space that makes the difference between a good and bad darkroom . First of all , arrange things so that the flow of work is all in one direction in assembly line style . This means that in an enlarging room , for example , the enlarger is to the extreme left , the developing and fixing trays immediately to the right , and the washing facilities next .
Avoid having waste floor space . The larger the amount of floor space , the more you have to walk between operations and the less handy things are . Bench space , on the other hand , is useful space . For that reason it is usually best to run benches along the full length of at least three of the four walls . Then have the floor space between the two longer walls only wide enough to work in comfortably , but no wider . A good width is about three feet .
THE DARKROOM ENTRANCE
The best entrance to the darkroom is a light - trap or labyrinth , if space permits . A properly designed light - trap permits no light to enter , yet requires no door or curtains . It has two important advantages : ( 1 ) it permits people to enter or leave at will without interference with the operator , and ( 2 ) it simplifies the ventilation problem . Darkrooms fitted with doors are inclined to be stuffy because the doors are kept tightly closed to keep out the light .
When designing the light trap , make an exact scale draw ing first . Only in this way can you be sure the dimensions are right to make the light - trap effec tive . The important thing to bear in mind is that the light traveling in a straight line must be reflect ed at least twice from the walls of the light - trap . Figure 1 shows several suitable designs .
The walls and ceiling of the light - trap should be painted a dull black to absorb as much light as possible , but you will probably have to use a standard gloss or semi - gloss paint for the flooring of the light - trap , as there are no matte floor paints . If black is unavailable , a deep maroon will do as well . Be sure to paint a white stripe along one wall of the labyrinth , about four feet high , to serve as a guide for visitors .
Figure 1 Here are several designs for light - traps . They have many advantages over conventional doors as entrances for your darkroom .
If space is too limited for a light - trap entrance , the darkroom . may have an ordinary door instead , but a much better . arrangement is to build a light tight revolving door or two doors with a small corridor between them . Try to arrange the two doors so that they are not in direct line ; then if one of them is not tightly closed while the other is being opened , there will be less danger of light leaking into the darkroom . Figure 2 illustrates two possible door arrangements .
Figure 2 If you lack a light - trap entrance to your darkroom , double doors , or a door and a curtain will make a suitable entrance .
DARKROOM VENTILATION
The easiest of all darkrooms to ventilate is one that is fitted with a light - trapped entrance . If the darkroom is located in a cool basement , no additional ventilation is required ; otherwise a simple ventilating fan , as illustrated in Figure 3 can be added . It should be installed opposite the light - trapped entrance , but inside the darkroom to blow stale air out .
The usual hermetically sealed darkroom will re quire more drastic treat ment ; installing a single ventilating fan alone isn't enough . You must provide an entrance for fresh air as well as an exit for stale air . This can be done by cutting a light - trapped opening into an opposite wall to the ventilator to permit fresh air to enter , thus providing cross - ventilation . Figure 4 shows several types of light - trapped air vents .
Figure 3 If you spend a good deal of time in your darkroom on hot days , a ventilator like this will be a great aid to comfort .
If your darkroom is to be used only occasionally and for relatively short periods , you can dispense with the fan and build two light - trapped openings at opposite sides of the room . One should be close to the floor for incoming fresh air , and the other near the ceiling to serve as an exit for warm , stale air .
معدات الغرفة المظلمة ..
تخطيط الغرفة المظلمة ..
مدخل الغرفة المظلمة ..
تهوية الغرفة المظلمة ..
DARKROOM LAYOUT
The layout of a darkroom - the orderly arrangement of its working space and facilities - is of the greatest importance . Space alone is not enough ; it is the efficient utilization of that space that makes the difference between a good and bad darkroom . First of all , arrange things so that the flow of work is all in one direction in assembly line style . This means that in an enlarging room , for example , the enlarger is to the extreme left , the developing and fixing trays immediately to the right , and the washing facilities next .
Avoid having waste floor space . The larger the amount of floor space , the more you have to walk between operations and the less handy things are . Bench space , on the other hand , is useful space . For that reason it is usually best to run benches along the full length of at least three of the four walls . Then have the floor space between the two longer walls only wide enough to work in comfortably , but no wider . A good width is about three feet .
THE DARKROOM ENTRANCE
The best entrance to the darkroom is a light - trap or labyrinth , if space permits . A properly designed light - trap permits no light to enter , yet requires no door or curtains . It has two important advantages : ( 1 ) it permits people to enter or leave at will without interference with the operator , and ( 2 ) it simplifies the ventilation problem . Darkrooms fitted with doors are inclined to be stuffy because the doors are kept tightly closed to keep out the light .
When designing the light trap , make an exact scale draw ing first . Only in this way can you be sure the dimensions are right to make the light - trap effec tive . The important thing to bear in mind is that the light traveling in a straight line must be reflect ed at least twice from the walls of the light - trap . Figure 1 shows several suitable designs .
The walls and ceiling of the light - trap should be painted a dull black to absorb as much light as possible , but you will probably have to use a standard gloss or semi - gloss paint for the flooring of the light - trap , as there are no matte floor paints . If black is unavailable , a deep maroon will do as well . Be sure to paint a white stripe along one wall of the labyrinth , about four feet high , to serve as a guide for visitors .
Figure 1 Here are several designs for light - traps . They have many advantages over conventional doors as entrances for your darkroom .
If space is too limited for a light - trap entrance , the darkroom . may have an ordinary door instead , but a much better . arrangement is to build a light tight revolving door or two doors with a small corridor between them . Try to arrange the two doors so that they are not in direct line ; then if one of them is not tightly closed while the other is being opened , there will be less danger of light leaking into the darkroom . Figure 2 illustrates two possible door arrangements .
Figure 2 If you lack a light - trap entrance to your darkroom , double doors , or a door and a curtain will make a suitable entrance .
DARKROOM VENTILATION
The easiest of all darkrooms to ventilate is one that is fitted with a light - trapped entrance . If the darkroom is located in a cool basement , no additional ventilation is required ; otherwise a simple ventilating fan , as illustrated in Figure 3 can be added . It should be installed opposite the light - trapped entrance , but inside the darkroom to blow stale air out .
The usual hermetically sealed darkroom will re quire more drastic treat ment ; installing a single ventilating fan alone isn't enough . You must provide an entrance for fresh air as well as an exit for stale air . This can be done by cutting a light - trapped opening into an opposite wall to the ventilator to permit fresh air to enter , thus providing cross - ventilation . Figure 4 shows several types of light - trapped air vents .
Figure 3 If you spend a good deal of time in your darkroom on hot days , a ventilator like this will be a great aid to comfort .
If your darkroom is to be used only occasionally and for relatively short periods , you can dispense with the fan and build two light - trapped openings at opposite sides of the room . One should be close to the floor for incoming fresh air , and the other near the ceiling to serve as an exit for warm , stale air .
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