0
A normal lens for a camera is one that delivers the human perspective. If you stand before a window and view a vista, you can trace with wax pencil the outline of objects you see. This drawing is called the human perspective.
To duplicate this perspective with a camera, we mount a lens with a focal length that is about equal to the diagonal measurement of the camera film. For example the 35mm camera film image measures 24mm by 36mm. The diagonal measure of this rectangle is rounded up to 50mm. Thus for this format, 50mm is considered normal. Each format size for film and digital cameras has a unique diagonal measure and thus each will have a different focal length for normal.
Most modern cameras are now sold with a zoom lens. The center of the zoom range is likely the normal setting. A lens shorter than normal gives a wide view and we call this lens a wide angle. Generally such a lens is about 70% of normal or shorter. A telephoto lens gives a magnified view and is generally 200% of normal or longer. For portraiture professional photographers prefer a lens 250% of normal. Such a set-up delivers about the same perspective we see in our make-up mirror or shaving mirror.
Wiki User
∙ 13y ago
Add your answer:
Earn +20 pts
What is refraction in photography?
In Photography, refraction has the same rules as in physics. Well, photography is all about engineering and physics. Refraction encompasses the situation where light goes through a semi transparent object and the photons are slightly drifted from its normal course because the surface they hit separates them. You can see this effect inside a pool or when you look at your own reflection at a cracked mirror.
How do camera lenses help in photography?
They zoom the image
Where can one read reviews on Nikon camera lenses?
You can read reviews on Nikon Camera lenses at dedicated photography sites such as Nikon USA, KenRockwell, and Photography Life. You can also read these reviews at stores that sell the lenses, such as Jessops and Amazon.
Have developments in cinematography affected still photography?
Yes... through lenses.
What does the acronym DOF refer to in photography?
In photography, the acronym DOF refers to Depth of Field. This applies mainly in digital photography, and is how focused the lenses are on one area or place.
What has the author William R Hawken written?
William R. Hawken has written: 'You and your lenses' -- subject(s): Photographic lenses 'Close-up photography' -- subject(s): Photography, Close-up 'Evaluating microfiche readers' -- subject(s): Microfilm readers 'What You Really Need to Know About Close-Up Photography' 'You and your camera' -- subject(s): Photography
What equipment do you need for photography?
A camera, a tripod, lenses, filters, developing and printing equipment.
What kinds of lens are used in photography?
In the most general terms, there are normal lenses, short lenses and long (telephoto) lenses. For most film-loaded SLR cameras the normal lens is 50mm. What is normal for one camera is not necessarily normal for others. Normal lenses minimize certain distortions that are inherent in longer or shorter lenses, and produce images that are proportionally most like the way the photographer actually viewed the scene when the image was made. There are lenses that support automatic focus and others that have to be focused manually. There are also zoom lenses that can be adjusted to work over sometimes quite large ranges of focal length; generally there may be some compromise in lens/image quality with some zooms; they are tempting and fun, but be sure you need one before you put out the money. Expensive lenses WILL NOT compensate for sloppy technique. There are probably thousands of different lenses available at any given time, over a dizzying range of prices and for any number of specialized applications.
Where can one buy Canon I lenses?
Canon I lenses can be purchased directly from the Canon website. Canon lenses are also sold at many locations such as RadioShack and Sam's Club; specialists can visit any number of photography-equipment outlets.
What is the difference between normal photography techniques and medical imaging?
normal photography is the exact moment that have you taken on that day and medical imaging is more on technology.
What is best for fast moving sports photography a Nikon D40 or a Canon EOS 400D?
Alas, the lens is more important than the body for sports photography and suitable lenses for fast moving sports are fast, long focal length. These lenses are expensive and will dwarf the cost of the body.
What types of products are sold by Jessops?
Jessops sells photography equipment. They sell cameras, camera lenses, camcorders, binoculars and telescopes, memory cards and card readers and photography accessories.
