Q1:The optical element is the lens, the chemical element is the film and the mechanical element is the camera.
Q2: An SLR camera stands for single-lens reflex. A SLR camera lets the photographer see the same picture that is exposed to the film. On this type of camera everything is adjusted by turning dials and clicking buttons.
Q3: The purpose of a camera's aperture is to be able to increase and decrease the amount of light passing through the lens.
Q4: The shutter speed on the camera controls how long the film is exposed.
Q5: the three things you need to get the right exposure for a picture are balance film speed, aperture size and shutter speed to fit the light level in the shot.
Q6: If you take pictures outside on a sunny day you would use a high film speed so there would be less time for light to get in.
Q7: 1.The first step is to place the film in a developing agent that is actually a reducing agent. 2.Then complete the developing process by rinsing the film with water or a "stop" bath.
3.then put the film in a fixing bath to remove the unexposed silver- halide crystals.
4. Then wash with water to remove chemicals.
Q8: Three things that are needed to make a black and white print are an enlarger, black and white paper, and processing chemicals.
Q9:In a black and white print the final image is silver.