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Image stabilization (IS) is a family of techniques that reduce blurring associated with the motion of a camera or other imaging device during exposure.. Generally, it compensates for pan and tilt (angular movement, equivalent to yaw and pitch) of the imaging device, though electronic image stabilization can also compensate for rotation about the optical axis (). [1]
The top and side of an iPhone 5S, externally identical to the SE (2016).From left to right, sides: wake/sleep button, silence switch, volume up, and volume down. The touchscreen on the iPhone has increased in size several times over the years, from 3.5 inches on the original iPhone to iPhone 4S, to the current 6.1 and 6.7 inches on the iPhone 14 and 14 Pro series. [1]
In order to see a clear image, the eye must focus rays of light on to the light-sensing part of the eye – the retina, which is located in the back of the eye.This focusing – called refraction – is performed mainly by the cornea and the lens, which are located at the front of the eye, the anterior segment.
[10] Macular degeneration: Macular degeneration cause loss of central vision, blurred vision (especially while reading), metamorphopsia (seeing straight lines as wavy), and colors appearing faded. [11] Macular degeneration is the third main cause of blindness worldwide, and is the main cause of blindness in industrialised countries. [12]
Sights can be a simple set or system of physical markers that serve as visual references for directly aligning the user's line of sight with the target (such as iron sights on firearms), [3] or optical instruments that provide an optically enhanced—often magnified—target image aligned in the same focus with an aiming point (e.g. telescopic ...
View through a 4× telescopic sight Leupold and Stevens Mark 6 scope with variable magnification X3-X18, mounted on an M24 SWS German military sniper rifle with a mounted telescopic sight and dismounted NSV80 clip on optoelectronic image intensifier. A telescopic sight, commonly called a scope informally, is an optical sighting device based on ...
scope (equipment) – A sight housing that resembles a scope, containing one or more pins used to align the bow with the target. Some housings, mainly used in target archery and often sold separately from the rest of the sight, can accept lenses (see clarifier). self bow (equipment) – A bow made from a single piece of material (normally wood)
In the expression 6/x vision, the numerator (6) is the distance in metres between the subject and the chart and the denominator (x) the distance at which a person with 6/6 acuity would discern the same optotype. Thus, 6/12 means that a person with 6/6 vision would discern the same optotype from 12 metres away (i.e. at twice the distance).