Focal length: f=4.2–126.0 mm, equivalent to 24–720 mm on a 35 mm camera
Focal length f=6.3 mm-63 mm, equivalent to 35 mm film's 38 mm-380 mm
Lens Optical zoom 3.6 x, Focal length 5.0 - 18.2 mm (equiv. 35mm: 28 – 102 mm), LCD Resolution 230000 dots
Run-length encoding | Planck length | Length overall | Focal length | Amplified fragment length polymorphism | foot (length) | Focal plane array | Focal infection theory | 35 mm equivalent focal length | Variable-length code | Unequal leg length | Stadion (unit of length) | Powder chamber of a ''Veuglaire'', caliber 130 mm, length 1.07 m, wrought iron, early 15th century, La Fère | ''Notes'' was the only full-length book published by Thomas Jefferson | Length scale | length | Foot (length) | Focal Press | focal plane array (FPA) | focal length | Focal adhesion | focal adhesion | Debye length | Cut-to-length logging | Arm's length principle | arm's length management organisation | arm's length | arc length |
The process requires the taking of multiple exposures of a scene in a manner that allows for later image stitching using a fast lens, generally of a focal length of 50mm or above.
Additionally, wide angle anamorphic lenses of less than 40 mm focal length produce a cylindrical perspective, which some directors and cinematographers, particularly Wes Anderson, use as a stylistic trademark.
The Canon PowerShot SX50 HS is a 12.1-megapixel PowerShot made by Canon, and super-zoom sporting a 50x zoom lens which is equivalent to a focal length of 24-1200mm .
Their use in long focal length lens assemblies was pioneered by Leitz.
Close-up lenses are usually specified by their optical power, the reciprocal of the focal length in meters.
This problem is resolved by constructing the lens as an inverted telephoto, or retrofocus with the front element having a very short focal length, often with a highly exaggerated convex front surface and behind it a strongly negative lens grouping that extends the cone of focused rays so that they can be brought to focus at a reasonable distance.