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Chromatic Aberration

David Präkel

David Präkel has enjoyed a successful and diverse career in journalism, photography and education. He has taught photography at all levels in the UK and America, at the prestigious Kodak Imaging Training Centre and in his own training workshops in Northumberland. Author affiliation details are correct at time of print publication.

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The Visual Dictionary of Photography

AVA Publishing SA, 2010

Book chapter

...Chromatic aberration (CA) is a lens fault that occurs when the lens cannot focus different colours at the same spot. There are two types: longitudinal and lateral. The bending power of a lens (refractive index [RI]) varies with the colour...

Additive Colour

David Präkel

David Präkel has enjoyed a successful and diverse career in journalism, photography and education. He has taught photography at all levels in the UK and America, at the prestigious Kodak Imaging Training Centre and in his own training workshops in Northumberland. Author affiliation details are correct at time of print publication.

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The Visual Dictionary of Photography

AVA Publishing SA, 2010

Book chapter

...White light passing through a prism creates all the colours of the rainbow but only three colours are necessary to make up all the others. These are called the additive primary colours (red, green and blue). Equal quantities of red, green...

Colour Filter Array

David Präkel

David Präkel has enjoyed a successful and diverse career in journalism, photography and education. He has taught photography at all levels in the UK and America, at the prestigious Kodak Imaging Training Centre and in his own training workshops in Northumberland. Author affiliation details are correct at time of print publication.

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The Visual Dictionary of Photography

AVA Publishing SA, 2010

Book chapter

...Tri-linear array with strips of red, blue and green sensors.Bayer pattern mosaic with twice as many green photo sites as red or blue.Three-layer structure of the Foveon image sensor.The process by which a digital image is created is known...

Colour captured

Phil Malpas

Phil Malpas is a freelance photographer and writer based in Swindon. He was previously a director of Photofolio, a commercial gallery in the north of England, and is a regular contributor to various magazines. Working with both large-format and digital cameras, Phil teaches photographic techniques both locally and with photographic tours around the world. Author affiliation details are correct at time of print publication.

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Basics Photography 03: Capturing Colour

AVA Publishing SA, 2007

Book chapter

...In this section are featured images by photographers who, in my opinion, demonstrate a true mastery of colour. In each case I have described why I believe they have succeeded and which combination of techniques they have employed....

Colour Cast

David Präkel

David Präkel has enjoyed a successful and diverse career in journalism, photography and education. He has taught photography at all levels in the UK and America, at the prestigious Kodak Imaging Training Centre and in his own training workshops in Northumberland. Author affiliation details are correct at time of print publication.

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The Visual Dictionary of Photography

AVA Publishing SA, 2010

Book chapter

...A colour cast is an unwanted, overall colour change in an image. The colour shift causing the cast can be identified from a ‘ring-around’, as shown here. Some ring-arounds also show the strength of the cast along a dimension moving out from...

Chromogenic Film

David Präkel

David Präkel has enjoyed a successful and diverse career in journalism, photography and education. He has taught photography at all levels in the UK and America, at the prestigious Kodak Imaging Training Centre and in his own training workshops in Northumberland. Author affiliation details are correct at time of print publication.

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The Visual Dictionary of Photography

AVA Publishing SA, 2010

Book chapter

...Chromogenic simply means ‘made from colour’. Chromogenic black-and-white film produces black-and-white negatives but is processed in colour film chemistry at any mini-lab (C-41 process). The film is virtually grain-free, with a velvety...

Colour Reversal Film

David Präkel

David Präkel has enjoyed a successful and diverse career in journalism, photography and education. He has taught photography at all levels in the UK and America, at the prestigious Kodak Imaging Training Centre and in his own training workshops in Northumberland. Author affiliation details are correct at time of print publication.

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The Visual Dictionary of Photography

AVA Publishing SA, 2010

Book chapter

...In 2009 Kodak announced the discontinuance of Kodachrome after 74 years.Colour reversal film produces a negative image in the camera but is processed to give a final positive colour image. This material is referred to by many names...

Colour Correction Filters

David Präkel

David Präkel has enjoyed a successful and diverse career in journalism, photography and education. He has taught photography at all levels in the UK and America, at the prestigious Kodak Imaging Training Centre and in his own training workshops in Northumberland. Author affiliation details are correct at time of print publication.

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The Visual Dictionary of Photography

AVA Publishing SA, 2010

Book chapter

...Colour correction or colour compensating (CC) filters are used to make changes in the overall colour balance of images and to correct colour casts. They can also be used to correct for batch variations in colour film, slight colour...

Colour Conversion Filters

David Präkel

David Präkel has enjoyed a successful and diverse career in journalism, photography and education. He has taught photography at all levels in the UK and America, at the prestigious Kodak Imaging Training Centre and in his own training workshops in Northumberland. Author affiliation details are correct at time of print publication.

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The Visual Dictionary of Photography

AVA Publishing SA, 2010

Book chapter

...A comparison of the European and Wratten systemsColour conversion filters let the photographer match the colour temperature of the lighting to the film being used. They are little used with digital cameras. In Europe, the filters...

Colour Management

David Präkel

David Präkel has enjoyed a successful and diverse career in journalism, photography and education. He has taught photography at all levels in the UK and America, at the prestigious Kodak Imaging Training Centre and in his own training workshops in Northumberland. Author affiliation details are correct at time of print publication.

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The Visual Dictionary of Photography

AVA Publishing SA, 2010

Book chapter

...Colour management is the suite of computer software that attempts to match colour from input, through display to output. Colour management systems need a profile of each device (camera, screen, printer, scanner) in order to do...