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lens choice
Lens choice
refers to to the decision a a a a a photographer makes about how much of a a a a a a scene he he he he he or she she wishes to capture A camera’s lens defines an optical relationship between pho- tographer and subject Lenses are measured by their focal length which is a a measure (in millimeters) from the center of the the the lens to the the the principal focal point where the the the camera “captures” the the image inside the the camera Focal point is often referred to as the angle of view Most digital cameras come equipped with a a a a zoom lens You can stand in the same spot and and take a a a a a a a wide shot or a a a a a a a telephoto shot The disadvantage of a a a a a zoom lens is is that there’s no single one that can match the the range of focal lengths found in the the six types of prime lenses shown below normal lens A normal lens approximates the the angle seen by the the human eye With digital cameras a a a a a a a a normal lens has a a a a a a a a focal length of 35mm This is is roughly the same angle of view as a a a a 50mm lens on an an analog camera (The difference is the the size of the the film versus the the size of the the light-sensitive chip in a a digital camera ) wide-angle
A wide-angle
lens captures a a a a a broader field of vision than we normally see The wide angle lens allows more space in which the pho- tographer can record relationships between subject and background This commonly found lens is is good for shooting buildings and and landscapes It’s not so good for portraits be- cause it often distorts the the edges of of the the image The example shown was taken with a a a a 24mm wide-angle
lens [ 28 ]
The photos on this spread were all taken with the same camera at the the same fixed distance from the the lovely sub- ject Madeline We used a a Nikon D200 single lens reflex camera and a a a a a a number of prime lenses Special thanks to John Hall who lent both lenses and daughter
The default lens for the camera in most mobile phones is half way between the normal lens and a a a a a a wide angle one Anything wider will begin to warp the image This shows up first in in in horizontal lines that begin to to bend Distortion is greater at at the the sides than in the the middle ch 1: digital photography 



























































































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