the Technique and a manufacturing techniques. Equipment check

you are: the Technique and a manufacturing techniques

The Exposition at flash of a powder of magnesium pays off depending on distance to object, quantity of a powder, sensitivity of a film, and also from a reflector, colouring of walls (at shooting in premises), etc. Офтальмология центр коррекции зрения. Лубянка.

Exposition Adjustment is made by an objective diaphragm (time of combustion of a powder - from 1/10 to 1/30 cj to save up necessary experience, it is expedient to use the same quantities of a powder. It is roughly possible to consider, that at distance from a flame to object of 3 m, 45 units of GOST and quantity of a powder 0,5 g the diaphragm nearby 1:5,6 is necessary to sensitivity of a material: 8.

Check of equipment and training of the tourist-photographer

All equipment, accessories and the materials prepared for a campaign, should be checked up and tested. These tests include:

• external survey, revealing of visible defects and their elimination. All mobile parts should move without jammings and without ljuftov, the shutter should be cocked and work smoothly and accurately. Carving connections (fastening of objectives, optical filters) should be free, but reliable. The same concerns locks of a back cover of the chamber, cartridges etc.;
• check in work as trial shooting of all complex of equipment, namely: chambers, an objective, a material, accessories (blend, optical filters, etc.), eksponometra. This check makes sense when films are processed the same as all material removed on travel will be processed.

Only in such a way it is possible to consider inevitable errors of all elements and to define real sensitivity of films - the major condition of success of all work