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IdeaPad (stylized as IDEAPΛD and formerly ideapad) is a line of consumer-oriented laptop computers designed, developed and marketed by Lenovo. The IdeaPad mainly competes against computers such as Acer 's Aspire , Dell 's Inspiron and XPS , HP 's Pavilion , Envy , Stream , and Spectre , Samsung 's Sens and Toshiba 's Satellite .
Macro or close-up modes tend to direct the camera's focus to be nearer the camera. They may shrink the aperture and restrict the camera to wide-angle in an attempt to broaden the depth-of-field (to include closer objects) – this last mode of operation is often known as Super Macro. Movie mode allows a still camera to take moving pictures.
The first mass-produced autofocus camera was the Konica C35 AF, a simple point and shoot model released in 1977. The Polaroid SX-70 Sonar OneStep was the first autofocus single-lens reflex camera, released in 1978. The Pentax ME-F, which used focus sensors in the camera body coupled with a motorized lens, became the first autofocus 35 mm SLR in ...
A digital camera image without (left) and with focus peaking (right). Focus peaking is a focusing aid in live preview or electronic viewfinders on digital cameras that places a white or coloured highlight on in-focus edges (contours) within an image using an edge detect filter.
Fixed focus can be a less expensive alternative to autofocus, which requires electronics, moving parts, and power.Since fixed-focus lenses require no input from the operator, they are suitable for use in cameras designed to be inexpensive, or to operate without electrical power as in disposable cameras, or in low-end 35 mm film point and shoot cameras, or in cameras featuring simple operation.
Focusing screen on Praktica Super TL1000 Location of focusing screen (6) in an SLR camera. A focusing screen is a flat translucent material, either a ground glass or Fresnel lens, found in a system camera that allows the user of the camera to preview the framed image in a viewfinder.
The hyperfocal distance is, therefore, the most desirable distance on which to pre-set the focus of a fixed-focus camera. It is worth noting, too, that if a camera is focused on s = ∞, the closest acceptable object is at L 2 = sh/(h + s) = h/(h/s + 1) = h (by equation 21). This is a second important meaning of the hyperfocal distance.
A Nikon-style mode dial showing aperture priority mode.. Aperture priority, often abbreviated A or Av (for aperture value) on a camera mode dial, is a mode on some cameras that allows the user to set a specific aperture value while the camera selects a shutter speed to match it that will result in proper exposure based on the lighting conditions as measured by the camera's light meter.