Samsung NX1000 User Manual - Page 38

Lens markings, Find out what the numbers on the lens signify.

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My Camera > Lenses Lens markings Find out what the numbers on the lens signify. SAMSUNG 18-200 mm F3.5-6.3 ED OIS lens (example) 1 2 345 No. Description Aperture value 1 A range of supported aperture values. For example, 1:3.5-6.3 means the maximum aperture value range from 3.5 to 6.3. Focal length The distance from the middle of the lens to its focal point 2 (in millimeters). This figure is expressed in a range: minimum focal length to maximum focal length of the lens. Longer focal lengths result in narrower angles of view and the subject is magnified. Shorter focal lengths result in wider angles of view. ED 3 ED stands for Extra-low Dispersion. Extra-low dispersion glass is effective in minimizing chromatic aberration (a distortion that occurs when a lens fails to focus all colors to the same convergence point). OIS (p. 71) 4 Optical Image Stabilization. Lenses with this feature can detect camera shake and effectively cancel out the movement inside the camera. Ø 5 The lens diameter. When you attach a filter to the lens, make sure that the diameters of the lens and the filter are the same. 37

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My Camera >
Lenses
37
Lens markings
Find out what the numbers on the lens signify.
SAMSUNG 18-200 mm F3.5-6.3 ED OIS lens (example)
1
2
345
No.
Description
1
Aperture value
A range of supported aperture values. For example, 1:3.5-6.3 means
the maximum aperture value range from 3.5 to 6.3.
2
Focal length
The distance from the middle of the lens to its focal point
(in millimeters). This figure is expressed in a range: minimum
focal length to maximum focal length of the lens.
Longer focal lengths result in narrower angles of view and the subject
is magnified. Shorter focal lengths result in wider angles of view.
3
ED
ED stands for Extra-low Dispersion. Extra-low dispersion glass is
effective in minimizing chromatic aberration (a distortion that occurs
when a lens fails to focus all colors to the same convergence point).
4
OIS (p. 71)
Optical Image Stabilization. Lenses with this feature can detect
camera shake and effectively cancel out the movement inside the
camera.
5
Ø
The lens diameter. When you attach a filter to the lens, make sure
that the diameters of the lens and the filter are the same.