Focus tracking

Focus Tracking
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3D Focus Tracking An invaluable feature for sports, action and wildlife photography, 3D focus tracking, available in select Nikon D-SLRs, automatically shifts the focus point to follow the movement of the subject. Find out more.

Predictive Focus Tracking System
Autofocus is a function that automatically focuses the camera lens on a subject when the shutter release button is at the half-pressed position.

Focus Tracking
Focus Tracking refers to the automatic mechanical feature in which the camera's on-board computer calculates the relative speed of a moving subject in order to effectively focus the lens on the subject.

Focus Tracking : Enables the camera to analyze the speed of the movi ing subject according to the focus data detected, and to obtain correct focus by anticipating the subject's position and driving the lens to that position&; ...

Focus tracking. The ability of the automatic focus feature of a camera to change focus as the distance between the subject and the camera changes.

Focus tracking
Predictive focus tracking automatically activated according to subject status in continuous-servo AF
Focus area
Can be selected from 11 focus points
Focus lock ...

Focus Tracking Focus Tracking refers to the mechanism on a camera that can calculate the speed of a moving subject in order to properly focus and position the camera's lens to capture ...
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Pre-focus if you need to, or use focus tracking if you like, or focus manually if it works for you. Whatever you do, you need to have the camera to your eye and your finger mostly down on the trigger.

Nikon's Article on the Predictive Focus Tracking System
Detailed Explanation of Contrast Detection Method
Principle of the Split Image Focusing Aid and the Phase Comparison Autofocus Detector in Single Lens Reflex Cameras ...

Autofocus tracking and acquisition have been improved A new Black-and-white (sRGB) mode has been added, and you can now download up to 3 custom tone curves (with Nikon Capture version 4.4.2 Camera Control).

If you have a camera with automatic focus tracking you can let the camera do the focussing for you by half pressing the shutter button (depending upon it's speed and whether it can keep up with the subject) ...

Since it requires a lot of computer power to do this all accurately, generally speaking newer models do a better job of this focus tracking than older models.

You can either use focus tracking (AI-Servo mode) or single shot which may be better if you know what you are doing, since tracking is not perfect.

Actual maximum tracking speeds also depend on how erratic the subject is moving, the subject contrast and lighting, the type of lens and the number of autofocus sensors being used to track the subject. Also be warned that using focus tracking can ...

And as well as the current D1H and D1X focus, any speed or performance improvement would be icing on the cake. In particular I would like to see a little better focus tracking in low light, ...

There are a number of manufacturers who do do housings for canon (INON, Sea and Sea) but these generally are for the cheap machines such as the Kiss (rebel i believe in the US) which doesn;t even have auto-focus tracking.

A 4fps burst shooting mode, 11-point autofocus system with 3D Focus Tracking, High Dynamic Range mode, Active D-Lighting and seven different special effects for stills and movies complete the Nikon D5100's headline specs.

The former is best for portraits and still life photography while the latter is used for wildlife and sports work. The speed of autofocus is key and some high-end cameras offer autofocus tracking as fast as 6 frames per second, ...

See also: Track, Focus, Image, Photograph, Sensor