Focus range

Focus Range
The difference between the closest and farthest distances a lens can focus on.
Focal Length Multiplier ...

Focus Range The range within which a camera is able to focus on the selected picture subject - 4 feet to infinity - for example.

Focus Range Limiter : Features that have on the Newer lenses of Nikon, the AF-I and AF-S Nikkors.

Focus range. The minimum and maximum distances within which a camera is able to produce a sharp image, such as two inches to infinity.

Focus Range
The ratio of Spot to Flood for a given light. Example: 800 fc to 100 fc = 8:1. The more the better, if it's also smooth.

Closest focus range
Shortest distance on which can be focused.
Contrast
The degree of difference between a subject's tones, which is a function of its inherent shades and colors and also the quality of light.

Focus range
Normal: 80 cm (2.6 ft)
Macro: 20 cm (0.6 ft)
Normal: 60 cm (2.0 ft)
Macro: 20 cm (0.6 ft) ...

Note how the focus range increases as the aperture is stopped down.
The range of the depth of field varies with the focal length of lens being used - the wider the angle of the lens, the more the depth of field so focusing is much less critical.

Extension tube: The extension tube has no glass inside, but does move the lens farther from the sensor plane, thereby shifting the focus range.

focus range, n thats it.
U have set every thing manually, so now, ur camera don't have to do any pre-pic configuration or calculate nething.
The way I do, when I don't use "manual",is
1) prefix the focus distance
2) lock the exposure ...

Contax G2: an auto/manual focus rangefinder camera, a lot like a classic Leica; interchangeable lenses; much much larger than a point and shoot camera, about $1400 with 45/2 lens ($1075 for gray market and $1500 for USA) ...

The Nikkor is working at its sweet spot, while the Canon lens is at the end of its focus range. I spent all day shooting a lens-off to pick the sharpest lenses for these conditions before I got to shooting the ISO tests.

Focus-Priority AF An autofocus mode in which the shutter cannot be released until the subject is in focus. Focus Range The range within which a lens can focus on a selected subject.

With one menu or dial selection you are instantly telling the camera how to adjust a dozen or more diffrerent things: white balance, focus range, metering, shutter speed, aperture, ISO, whether or not to use flash, ...

Since your focus range will be so limited though, actual gains will likely be modest.

boost contrast (to some degree) via an imaging application today. Beyond contrast there's no quantitative way to classify the characteristic of the bokeh (out-of-focus blur), the degree of flare and the performance variations across the focus range.

See also: Lens, Focus, Camera, Image, Time