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With 35 mm film cameras, the 35 mm refers to the film size, not to be confused with the lens size. A 50 mm lens is usually considered the normal or neutral size, with a magnification factor of one. A 50 mm lens has no magnification. So, as the size (millimeters) of the lens become larger, the magnification of the image becomes greater. A 100 mm lens gives 2 times magnification, and makes the subject appear 2 times closer and gives less viewing area; a 200 mm lens gives 4 times magnification, and so on.

A 25 mm lens would make the subject look farther away by a factor of 2 and give a wider viewing area. Fisheye lenses, usually about 8 to 15 mm, give a very wide view and negative magnification. The increased area appears as a distorted "fisheye" view.

Digital cameras have electronic image sensors which are usually smaller than the area of film exposed in a 35 mm camera, and lenses will have a different magnifing effect. It is not a problem, though, as the manufacturer almost always gives a calculation of the equivalence of the lens with the digital camera compared to a 35 mm film camera, and calculates the magnification of the lens of the digital camera.

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Q: How does mm convert to lens magnification?
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Related questions

12x lens equals how many mm?

In standard film camera reference which is commonly used, a 50 mm lens equals a neutral value, or 1x magnification, so a 12x lens would be 600 mm.


What do the numbers 6x24x50 represent for a rifle scope?

6-24 magnification, 50 mm lens


What is the difference between a 200mm lens and a 20 times lens?

It depends on the actual focal length. For a 35 mm format lens, 200 mm is about 4x magnification, to get 20x you'd need a 1000 mm lens. For smaller formats, such as 8 mm or a camcorder, find the focal length for normal view, then multiply by 20.


What is the magnification of a reflecting telescope with an eyepiece of focal length 25 mm and an objective lens of focal length 2000 mm?

That's 80 power.


What is the total magnification of a microscope with two lens when one lens has a magnification of 15 and the other lens has a magnification of 30?

15 * 30 = 450 ------------


Total magnification is determined by?

the eyepiece lens magnification X the magnification of the objective lens.


How you find the magnification of a microscope?

Simply, multiply the magnification of the ocular lens times the magnification of the objective lens you have in place.


If a light microscope has an eyepiece lens of magnification x15 what magnification of objective lens would be needed to get a total magnification of x1500?

The total magnification is equal to the magnification of the eyepiece multiplied by the magnification of the objective lens. So in this case the objective lens would need to be 100X.


What is the total magnification of a microscope with two lenses when one lens has a magnification 15 and the other lens has a magnification 30?

15 * 30 = 450 ------------


What is the toal magnification of a microscope with two lenses when one lens has a magnification of 15 and the other lens has a magnification of 30?

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10 times eye piece 40 times objective lens?

Each objective lens has a different magnification. Multiply the magnification of the eyepiece by the magnification of the objective lens to produce total magnification. For example, a 10X ocular lens and a 40X objective lens will produce a total magnification of 400X (10 x 40 = 400).


What is the total magnification of a microscope when the eyepiece lens by the magnification of the the high objective lens?

multiply the magnification of the eyepiece by the magnification of the high objective lens. for example, if the eyepiece magnifies x10, and the high objective magnifies x40, then the total magnification would be 400x