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.
...An Exposure Value is a method of stating exposure settings using a single number to represent a range of equivalent combinations of aperture and shutter speed. The Exposure Value unit is one stop. EV0 is a shutter speed of 1 sec at f/1.0...
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.
...Bracketing is intentional over- and underexposure from the indicated exposure, usually done in whole or half stops. When the best exposure may not be that indicated by the light meter, bracketing gives the photographer a choice of images...
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.
...A neutral density (ND) filter reduces light intensity equally across the spectrum. It can be used to adjust exposure when it is not desirable or not possible to change the lens aperture – as with some reflex (mirror) lenses). ND filters let...
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.
...Aperture is just another word for hole. The hole in question is that in the centre of the lens iris (or diaphragm). Adjusting the size of the hole controls the intensity of the light passed by the lens. Changing aperture therefore becomes...
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.
...Reflected light meters – like the one in your camera – are calibrated to provide an exposure reading that will reproduce an average scene, i.e. mid-grey. An overall dark scene will be overexposed to produce a grey image and a light scene...
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.
...With film cameras, a double exposure was a common hazard of forgetting to wind the film on between pictures. Two or more images can be made on the same piece of film (double or multiple exposures). A subject can appear two or three times...
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.
...This chapter looks at what is actually a side effect of using a mechanism to change the brightness of the image cast inside the camera by the lens. This adjustable hole or aperture produces the appearance of increased sharpness in front...
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.
...Dodging and burning are both forms of local area exposure control. Dodging (sometimes called holding back) makes things lighter; burning or burning-in makes them darker. The words come from darkroom usage where a board with a hole...
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.
...In order to get a good exposure every time with both shadow and highlight detail, some way of measuring exposure, rather than guesswork or estimation, is needed. This chapter opens with a review of the development of the modern...
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.
...Ansel Adams’s Zone System was his revision of work by John L Davenport originally published in 1940 in US Camera magazine. In 1941, Adams and his co-worker, Fred Archer, created the Zone System as a series of practical tests and processes...
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