ثانياً : أجزاء غير أساسية .. كتاب أسس التصوير الضوئي

Second: non-essential parts.

These are improvements that may be available in one machine over the other: such as:

(1) The Range Finder, whose function is to accurately estimate the distance in meters or feet, to prevent error in its estimation.

(2) A water meter. To check if the camera is in a horizontal position.

(3) A self-timer device whose function is to delay the opening of the Creator for a period that may be approximately thirty seconds, which is a sufficient period for the photographer to take his place in front of the lens.

(4) A statement to show the Depth of Field Scale) and its explanation will come.

(5) An indication of how rapidly spreads, sensitivities and types (Fig. 8)

(6) An Exposure Meter whose purpose is to determine the aperture of the diaphragm and the speed that suits it, while noting the speed of the sensitivity of the used film.

(7) A hole for connecting the flash light wire to the shutter speed.

And there are a lot of improvements that factories compete to introduce into cameras. We have listed the aforementioned as an example