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HP LaserJet 4. The HP LaserJet 4 (abbreviated sometimes to LJ4 or HP4) is a group of monochrome laser printers produced in the early to mid-1990s as part of the LaserJet series by Hewlett-Packard (HP). The 4 series has various models, including the standard LaserJet 4 for business use, the 4L for personal use and the 4P for small businesses. [1]
D – HP Deskjet Dxxxx printer; D – HP Photosmart Dxxxx Single Function photo printer; F – HP Deskjet Fxxx All-in-One printer; G – HP Scanjet Gxxxx photo/flatbed scanner; K – HP Officejet Pro Kxxx color printer; M – HP Mono LaserJet Mxxxx Multifunction printer; N – HP Scanjet Nxxxx document/professional image scanner; P – HP Mono ...
In photography, the shutter-release button (s just shutter release or shutter button) is a push-button found on many cameras, used to record photographs. [1] When pressed, the shutter of the camera is "released", so that it opens to capture a picture, and then closes, allowing an exposure time as determined by the shutter speed setting (which ...
The Bulb setting (abbreviated B) on camera shutters is a momentary-action mode that holds shutters open for as long as a photographer depresses the shutter-release button. The Bulb setting is distinct from shutter's Time ( T ) setting, which is an alternate-action mode where the shutter opens when the shutter-release button is pressed and ...
The shutter speed dial of a Nikkormat EL Slow shutter speed combined with panning the camera can achieve a motion blur for moving objects. In photography , shutter speed or exposure time is the length of time that the film or digital sensor inside the camera is exposed to light (that is, when the camera 's shutter is open) when taking a ...
The Latitude 9420 and 9520 laptops come with a feature called SafeShutter. Dell says it’s the industry’s first automatic webcam shutter, which can open or close on its own by syncing with ...
This is an accepted version of this page This is the latest accepted revision, reviewed on 5 February 2025. Optical device for recording images For other uses, see Camera (disambiguation). Leica camera (1950s) Hasselblad 500 C/M with Zeiss lens A camera is an instrument used to capture and store images and videos, either digitally via an electronic image sensor, or chemically via a light ...
A San Francisco cable car, imaged using an Alkeria Necta N4K2-7C line scan camera with a shutter speed of 250 microseconds, or 4000 frames per second. A line-scan camera traditionally has a single row of pixel sensors, instead of a matrix of them. The lines are continuously fed to a computer that joins them to each other and makes an image.