FAQs
1)What is a camera?
Answer:The Camera is one of the significant tools used for generating Visuals. It is a device that captures optical image of objects with the help of light on photosensitive material.
2)Name some of the essential parts of a Camera.
Answer: Some of theessential parts of a camera are light tight chamber, lens, viewfinder and arrangement to hold the film at the focal plane.
3)Name the different controls you have in the camera.
Answer: The different controls available in a camera include the Lens Controls that is controls with Focusing Ring, Aperture Ring, Zoom Ring and the Shutter Control that is the with the help of Shutter Speed Dial.
4)Define focal length of a lens.
Answer:The distance between the principal focus and the centre of the lens is known as focal length of the lens.
5)How do the lenses of different focal length influencethe pictures of the same scene?
Answer:The lenses of different focal length can result remarkably different pictures of the same scene. It can influence the field of view and the magnification of the image.
6)What do you understand as covering power of a lens?
Answer:Covering power of a lens refer to the maximum area of focal plane over which the lens is capable of giving an evenly illuminated image of an acceptable standard of definition.
7)Why did parallax error take place while viewing through a direct vision viewfinder?
Answer: Some time parallax error takes place while viewing through direct vision viewfinder systemas the viewfinder is offset from the lens axis and the view was seen from a point above and usually to one side of the lens.
8)What is the drawback of micro prism focusing aid?
Answer:The drawback is that the micro prisms have considerable light loss, making low-light focusing almost impossible.
9)What do you understand by the term Relative aperture?
Answer:Relative aperture or the f/number is the ratio between the focal length and the actual opening of the lens.
10)What is the relation between f/number and the lens opening?
Answer:The smaller the f-number or stop, greater is the lens opening and greater the f-number, smaller is the lens opening.