Tuesday, February 16, 2010
Thursday, February 11, 2010
Although amateurs may break into this field without formal training, photojournalism is often limited to professionals. One reason photojournalism is generally practiced by professionals is that serious photojournalists must be sure that their shots maintain the integrity of the original scene.
Photojournalism requires the photographer to shoot only the facts: no alteration or embellishment of the photo is permitted. Photojournalism pictures are often powerful images that engage the viewer with the news story. Knowing how to take such shots to capture the original emotion is often learned only through years of practice and experience.
Documentary photographs tell stories with images. The main difference between photojournalism and documentary photography is that documentary photography is meant to serve as a historical document of a political or social era while photojournalism documents a particular scene or instance.
A documentary photographer may shoot a series of images of the inner city homeless or chronicle the events of international combat. Any topic may be the subject of documentary photography. As with photojournalism, documentary photography seeks to show the truth without manipulating the image.
While professionals who take action shots may specialize in a variety of different subjects, sports photography is one of the fastest and most exciting types of photography. As with any action shot, a good sports photographer has to know his or her subject well enough to anticipate when to take pictures. The same rule goes for photographers taking action shots of animals in nature or of a plane taking off.
Macrophotography describes the field of photography in which pictures are taken at close range. Once restricted to photographers with advanced and expensive equipment, macrophotography is now easier for amateurs to practice with digital cameras with macro settings. Macrophotography subjects may include insects, flowers, the texture of a woven sweater or any object where close-up photography reveals interesting details.
Microphotography uses specialized cameras and microscopes to capture images of extremely small subjects. Most applications of microphotography are best suited for the scientific world. For example, microphotography is used in disciplines as diverse as astronomy, biology and medicine.
Glamour photography seeks to capture its subject in suggestive poses that emphasize curves and shadows. As the name implies, the goal of glamour photography is to depict the model in a glamorous light. Consequently, many glamour shots carry flirtatious, mysterious and playful tones.
An aerial photographer specializes in taking photos from the air. Photos may be used for surveying or construction, to capture birds or weather on film or for military purposes. Aerial photographers have used planes, ultralights, parachutes, balloons and remote controlled aircraft to take pictures from the air.
Underwater photography is usually employed by scuba divers or snorkelers. However, the cost of scuba diving, coupled with often expensive and unwieldy underwater photography equipment, makes this one of the less common types of photography. Similarly, if an amateur has the equipment and the scuba know-how, taking shots underwater can be complicated, as scuba goggles are magnified and distort the photographer’s vision.
Artistic photography can embrace a wide variety of subjects. While a nature photographer may use underwater photography to create an art show based on sea life, a portrait photographer’s show may feature black and white artistic portraitures. In all cases, the photographs must have aesthetic value to be considered art.
Portraiture is one of the oldest types of photography. Whether the subject is your family or your pet, the goal of portraiture is to capture the personality of the subject or group of subjects on film.
Wedding photography is a blend of different types of photography. Although the wedding album is a documentary of the wedding day, wedding photos can be retouched and edited to produce a variety of effects. For example, a photographer may treat some of the pictures with sepia toning to give them a more classic, timeless look.
Because photography plays a vital role in advertising, many professional photographers devote their careers to advertising photography. The need for unique and eye-catching advertising copy means the photographer may work with multiple types of photography, including macrophotography and glamour photography.
Travel photography may span several categories of photography, including advertising, documentary or vernacular photography that depicts a particularly local or historical flavor. A travel photographer can capture the feel of a location with both landscapes and portraiture.
-Digital single-lens reflex camera
-Lenses for SLR and DSLR cameras
-List of photographic equipment makers
-Perspective control lens
-Single-lens reflex camera
-Twin-lens reflex camera
Referred to the lensdiaphragm 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 or f-stops. 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. Each of this value represents one time the amount of light either more or less in quantity. Meaning to say, f/16 will let in 1X the amount of light than a diaphragm opening of f/22 and so forth; while on the other hand, an aperture of f/4.0 will let in 1X lesser than that of f/2.8 etc.
The shutter blocks all light from exposing the film until you press the button. Then it quickly opens and closes, giving the film a brief flash of light.
You can control the length of time the shutter remains open by setting the shutter speed.
The current International Standard for measuring the speed of colour negative speed is called ISO 5800:1987 from the International Organization for Standardization (ISO). Related standards ISO 6:1993and ISO 2240:2003 define scales for speeds of black-and-white negative film and color reversal film. This system defines both anarithmetic and a logarithmic scale, combining the previously separateASA and DIN systems.
In the ISO arithmetic scale, corresponding to the ASA system, a doubling of the sensitivity of a film requires a doubling of the numerical film speed value. In the ISO logarithmic scale, which corresponds to theDIN scale, adding 3° to the numerical value that designates the film speed constitutes a doubling of that value. For example, a film rated ISO 200/24° is twice as sensitive as a film rated ISO 100/21°.
Commonly, the logarithmic speed is omitted, and only the arithmetic speed is given; for example, “ISO 100”.
Spot metering takes a reading from a very small part of the image (between 1 and 5 per cent), and ignores the exposure of the rest of the scene. While this area is usually in the middle of the scene, some cameras allow the user to select a different part of the image from which to take a reading, or to recompose the shot after taking a reading. Spot metering is good choice for high contrast and backlit scenes but needs to be used with care, and aimed at an area that will form the mid-tone part of the final image.
A type of metering first introduced by the Nikon, zone is a type of metering which takes readings from several different areas - or zones - within the scene to produce a calculated average. The number of different zones used can vary dramatically from one camera to another, but the end result is usually just an average of them all. This is useful for general scenes with low contrast.
There are other various types of metering, but these tend to be a variation of the three types mentioned above.
Having different metering modes available becomes more useful for when you start to progress to more advanced photography, for example, subjects backlit by the sun. This is when modes such as Spot or Centre -weighted metering will become appropriate.
Here a metering is taken from the whole of the scene first, then the central spot. The result is the average reading, but with extra weight given to the central part. Some cameras allow the user to change the amount of weight given to the central area but as a general rule, around 60 to 80 per cent of the sensitivity is directed towards the central part of the image, making it a good choice for portraits.
White balance (WB) is the process of removing unrealistic color casts, so that objects which appear white in person are rendered white in your photo. Proper camera white balance has to take into account the "color temperature" of a light source, which refers to the relative warmth or coolness of white light. Our eyes are very good at judging what is white under different light sources, however digital cameras often have great difficulty with auto white balance (AWB). An incorrect WB can create unsightly blue, orange, or even green color casts, which are unrealistic and particularly damaging to portraits. Performing WB in traditional film photography requires attaching a different cast-removing filter for each lighting condition, whereas with digital this is no longer required. Understanding digital white balance can help you avoid color casts created by your camera's AWB, thereby improving your photos under a wider range of lighting conditions.