Photography can be referred to as a process of creating still or inviting pictures by the methods of capturing the live data by observing the radiations and storing it on a sensitive medium such as electromagnetic film or electronic sensors.
The light patterns emitted are obtained in a photographic film start a chemical or electrical sensor in the storing material. This is regularly done through a camera lens which is extremely sensitive.
Underwater Photographer
Functions of a camera
The Underwater Photographer, Third Edition: Digital and Traditional Techniques Best
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The Underwater Photographer, Third Edition: Digital and Traditional Techniques Overview
A superb hand-on manual containing a wealth of underwater tips, hints and advice - all beautifully illustrated with brand new, full colour images.Martin Edge, a leading authority on underwater photography, will help you capture stunning effects using his popular 'think and consider' system - offering a heightened awareness and understanding of the subject matter, lighting and environment to take the perfect picture. Practical examples take you step-by-step through the basic techniaques from photographing shipwrecks, divers, marine life and abstract images to taking photographs at night and 'dual lighting'.
In 1999 the late Jim Church, guru of underwater photography, said: 'As a member of the new generation of underwater photography writers, [Martin has] set a standard that will only be surpassed when [he writes] a third edition.' Here it is, we hope you enjoy it.
* Learn 'how that shot was taken' with practical case studies
* Beautifully illustrated throughout with inspirational full colour underwater images
* Covers the highly respected philosophy of the 'Think & Consider' System
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The camera is the image forming device. The electronic image sensors or a photographic film is the recording medium. Nowadays digital cameras are also ready which have electronic medium as the storing medium.
The basic principle of the camera is that, it controls the amount of light and time of the exposure of the camera to the outer world by using a lens. When there is adequate light, then we can form an image on a film. This raw image can then be industrialized to procure a real time traditional image.
Movie camera is someone else type of camera in which the total movements are captured and not only the still. The basic idea behind the movie camera is that the data are captured in a sequence of photographs with no delay in between them. This forms a inviting frame which is often captured with the voice.
Controls of a camera
To ensure that we procure a sharp and clear photograph, we have to make sure that we adjust the camera either manually or automatically. Below are some of the controls and its descriptions.
Focus
Focus is the adjustment that is made to bring the desired area or the desired part to the sharpest point possible. This is regularly done manually, but this is also done automatically in some most recent digital cameras.
Aperture
Aperture can be referred to as the adjustments of the iris. It is also known as the f number. This amount regularly controls the amount of light that will pass through the lens. The gap ,break has also known to have some result on the focus and the depth of the field.
Shutter speed
The controls over the speed of the shutter with which it closes and opens are called as shutter speed. This is regularly in the speeds of milliseconds. This is the time of which the imaging medium and the light are exposed to the storing medium.
White balance
The white equilibrium is a special highlight in the digital cameras that is used to ensure that the white light is captured as it was in the real medium so that the colors that are in the imaging area appear naturally.
Metering
Metering is the determination of the amounts of the exposure of the light. This is done manually so that the inviting light areas and the shadow regions are captured according to the photographer's wish.
Auto-focus point
Auto-focus point is an additional highlight that is employed in many of the new digital cameras to ensure that the focus is done so that it satisfies the photographer's wish. Nowadays multiple auto focus points in the view finder are also available.
Basic Functions of a Digital CameraAdventures in Oceanography Video Clips. Duration : 58.72 Mins.Join research oceanographer and photographer Dale Stokes for a global photographic journey featuring ships, submarines, underwater habitats, and both poles. This presentation includes a decade of images documenting exotic locations underwater and topside and a variety of unusual vessels and research instruments. Series: Perspectives on Ocean Science [6/2009] [Science] [Show ID: 16075]
Tags: oceanography, Scripps, marine, life
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