The document provides information on camera basics and components for different types of cameras. It discusses the differences between rangefinder and single lens reflex cameras. It also covers important factors to consider when buying a camera like lens quality, resolution, file formats, batteries, memory cards, and special features. The document provides information on exposure settings like aperture, shutter speed, and ISO and how they affect the photo.
A 35-mm camera having a 50-mm focal length lens subtends a 45-degree viewing angle. Lenses with focal lengths greater than 50-mm are referred to as telephoto and zoom lenses (a variable telephoto). Lenses with focal lengths less than 50-mm are referred to as wide-angle lenses.
A 35-mm camera having a 50-mm focal length lens subtends a 45-degree viewing angle. Lenses with focal lengths greater than 50-mm are referred to as telephoto and zoom lenses (a variable telephoto). Lenses with focal lengths less than 50-mm are referred to as wide-angle lenses.
The "amount" of light allows to strike the film plus the duration (time) for the light to strike the film forms an exposure. The camera has two mechanisms to control exposure, the lens diaphragm (lens section - aperture ) and the timing of the OPEN/CLOSE of the shutter curtain (camera section - shutter speed ). If this confuses you, the lens diaphragm (inside a typical SLR camera lens) consists of multiple blades which can be open and closed to certain size openings, the variations in the lens opening is called aperture . The size of the aperture determines the amount of light which will fall on the film. Various sizes of the lens opening are indicated by a set /series of numbers called f /stops or f/numbers . Each f/stop represents a specific quantity of light that pass through the lens. The smaller numbers are called large f/stops while the larger numbers are called small f/stops. This is because the larger numbers represent smaller apertures and allow less light to pass through the picture taking lens. Each time you move from one f/stop to the next smaller f/stop (larger number the amount of light allowed through is exactly halved. In effect, the amount of exposure itself is also halved. Using f/2 as an example, the amount of light reaching the film will change according to f/stop as indicated below:
Aperture is referred to the lens diaphragm opening inside a photographic lens. The size of the diaphragm opening in a camera lens REGULATES amount of light passes through onto the film inside the camera the moment when the shutter curtain in camera opens during an exposure process. The size of an aperture in a lens can either be a fixed or the most popular form in an adjustable type (like an SLR camera). Aperture size is usually calibrated in f-numbers . i.e. those little numbers engraved on the lens barrel like f22 (f/22),16 (f/16), f/11, f/8.0, f/5.6, f/4.0, f/2.8, f/2.0, f/1.8 etc. The MOST confusing part for any new photographer: JUST remember in photographic term: a BIG aperture is actually referring to a smaller number engraved on the aperture ring of the lens i.e. f/1.4, f/2, f/2.8, f/4.0 etc. while small apertures means bigger numbers i.e. f/22, f/16, f/11, f/8 etc. Once you have "overcome" such "mental block" in calculation, it should help you greatly understand and enjoy more in other sections to follow. So, you OUGHT to digest this paragraph.
Depth of field is the amount of distance between the nearest and farthest objects that appear in acceptably sharp focus in a photograph. A preferred selection Depth of field ("DOF") in a focused subject in an image can be quite subjective. Remember this, adequate selection of DOF for one situation, application may be unacceptable for another photographer. It is all a matter of personal preference when trying to determine the appropriate use of DOF to enhance an effect in a photograph.
Depth of field is the amount of distance between the nearest and farthest objects that appear in acceptably sharp focus in a photograph. A preferred selection Depth of field ("DOF") in a focused subject in an image can be quite subjective. Remember this, adequate selection of DOF for one situation, application may be unacceptable for another photographer. It is all a matter of personal preference when trying to determine the appropriate use of DOF to enhance an effect in a photograph.