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understandingPHOTOGRAPHY

“If I knew how to take a good photograph I would do it every time.” ~Robert Doisneau

AndrewViny


understandingPHOTOGRAPHY EXPOSURE FOCUS THECAMERA POSTPROCESSINGDEMO (time permitting)


understandingEXPOSURE ISO shutter speed aperture


understandingEXPOSURE ISO in terms of film is the size of the grain of silver in the negative. The larger the grain the more quickly the film exposes. iso is the speed at which the image making medium (be it film or a digital sensor) responds to light.


understandingEXPOSURE shutter speed is the length of time between the opening and closing of the camera’s shutter.


understandingEXPOSURE aperture is the size of the hole through which light enters the camera. this device controls how much light enters the camera at once.

1.4

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2.8

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5.6

8


understandingFOCUS aperture external factors


understandingFOCUS aperture is used to control the amount of light that enters the camera at any given point, but it also controls something called depth of field.

bokeh is a term used to describe the quality of the out of focus area in an image.


understandingFOCUS blur can occur as result of motion of the photographer. to avoid this type of blur try to keep your shutter speed above 1/focal length. image stabilization helps the photographer prevent this type of blur.


understandingFOCUS blur can occur as result of motion of the subject. in these cases blur can be counter acted by moving the camera with the subject. this is called panning.


understandingCOMPOSITION rule of thirds is a compositional rule which dictates a system for organizing objects within the field of view. the concept is simple divide the image into thirds both vertically and horizontally the places the lines intersect are the points to place your items of interest on. much like s curves and the fibonacci sequence this arrangement is inhertently pleasing to the human eye.


understandingTHECAMERA focal length sensor size camera types


understandingTHECAMERA focal length is a measure of a lens’s field of view. zooming in shrinks the field of view (reducing the amount of the scene that you see). telecompression is a flattening of the image plane at longer focal lengths. At wider focal lengths distortion occurs. Results in an isolation of the subject.


understandingTHECAMERA sensor size is often described by the crop factor of the sensor in relation to a 35mm negative. For example a micro 4/3 sensor is half the size of a 35mm negative so it’s crop factor is 2x. PHASE ONE

35mm APSC Micro 4/3 PS


understandingTHECAMERA sensor size is the most important factor which influences image quality. The larger the sensor, the larger the pixels. The larger the pixels, the more imformation they can pick up. small sensors with too many pixels can create and effect called pixel crowding. Pixel crowding results in higher image noise.


understandingTHECAMERA the two main camera catagories that you will probably encounter are the slr (single lens reflex) and mirrorless cameras.


understandingTHECAMERA image stabilization in some cameras and lenses can also counter act this type of blur. is works by moving either a floating lens element (in the case of in lens stabilization) or the image sensor (in the case of in body stabilization.


theEND

Photography Lecture  

Understanding photography for Mark Gross' Skill Swapping studio 2012 by Andrew Viny

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