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Nikon D90
The Nikon D90 is a 12.3-megapixel digital single-lens reflex camera (DSLR) model announced by Nikon on August 27, 2008. It is a prosumer model that replaces the Nikon D80, fitting between the company's entry-level and professional DSLR models. It has a Nikon DX format crop sensor. Nikon gave the estimated selling Price in the United States as US$ 899.95 for the body alone and as $1299.99 with the Nikkor AF-S DX 18-105mm f/3.5-5.6G ED VR, which by itself sold for $399.95. The D90 was the first DSLR with video recording capabilities. In May 2009, the D90 won the TIPA European Photo & Imaging Award, in the "Best D-SLR Advanced" category. Features Some of the improvements the D90 offers over the D80 include 12.3-megapixel resolution, extended light sensitivity capabilities, live view and automatic correction of lateral chromatic aberration. The D90 is the first DSLR to offer video recording, with the ability to record HD 720p videos, with mono sound, at 24 frames per second. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nikon
(, ; ) is a Japanese optics and photographic equipment manufacturer. Nikon's products include cameras, camera lenses, binoculars, microscopes, ophthalmic lenses, measurement instruments, rifle scopes, spotting scopes, and equipment related to Semiconductor device fabrication, semiconductor fabrication, such as Stepper, steppers used in the photolithography steps of such manufacturing. Nikon is the world's second largest manufacturer of such equipment. Since July 2024, Nikon has been headquartered in Nishi-Ōi, Shinagawa, Shinagawa, Tokyo where the plant has been located since 1918. The company is the eighth-largest chip equipment maker as reported in 2017. Also, it has diversified into new areas like 3D printers, 3D printing and regenerative medicine to compensate for the shrinking digital camera market. Among Nikon's many notable product lines are Nikkor imaging lenses (for Nikon F-mount, F-mount cameras, large format photography, photographic enlargers, and other applicatio ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chromatic Aberration
In optics, chromatic aberration (CA), also called chromatic distortion, color aberration, color fringing, or purple fringing, is a failure of a lens to focus all colors to the same point. It is caused by dispersion: the refractive index of the lens elements varies with the wavelength of light. The refractive index of most transparent materials decreases with increasing wavelength. Since the focal length of a lens depends on the refractive index, this variation in refractive index affects focusing. Since the focal length of the lens varies with the color of the light different colors of light are brought to focus at different distances from the lens or with different levels of magnification. Chromatic aberration manifests itself as "fringes" of color along boundaries that separate dark and bright parts of the image. Types There are two types of chromatic aberration: ''axial'' (''longitudinal''), and ''transverse'' (''lateral''). Axial aberration occurs when different wavelengt ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
JPEG
JPEG ( , short for Joint Photographic Experts Group and sometimes retroactively referred to as JPEG 1) is a commonly used method of lossy compression for digital images, particularly for those images produced by digital photography. The degree of compression can be adjusted, allowing a selectable trade off between storage size and image quality. JPEG typically achieves 10:1 compression with noticeable, but widely agreed to be acceptable perceptible loss in image quality. Since its introduction in 1992, JPEG has been the most widely used image compression standard in the world, and the most widely used digital image format, with several billion JPEG images produced every day as of 2015. The Joint Photographic Experts Group created the standard in 1992, based on the discrete cosine transform (DCT) algorithm. JPEG was largely responsible for the proliferation of digital images and digital photos across the Internet and later social media. JPEG compression is used in a number of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Expeed
The Nikon Expeed image processor, image/video processors (often styled ''EXPEED'') are media processors for Nikon dslr, Nikon's digital cameras. They perform a large number of tasks: * Bayer filtering * demosaicing * image sensor corrections/dark-frame subtraction * image noise noise reduction, reduction * Unsharp masking, image sharpening * image scaling * gamma correction * image enhancement/Active D-Lighting * colorspace conversion * chroma subsampling * framerate conversion * image distortion, lens distortion/chromatic aberration correction * image compression/JPEG encoding * video compression * Electronic visual display, display/HDMI, video interface driving * digital image editing * face detection * Audio signal processing, audio processing/Audio compression (data)#Audio, compression/MP3, encoding and * computer data storage/data transmission. Expeed's Multiprocessor, multi-processor system on a chip solution integrates an image processor in multi-core processor architec ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Active Pixel Sensor
An active-pixel sensor (APS) is an image sensor, which was invented by Peter J.W. Noble in 1968, where each pixel sensor unit cell has a photodetector (typically a pinned photodiode) and one or more active transistors. In a metal–oxide–semiconductor (MOS) active-pixel sensor, MOS field-effect transistors (MOSFETs) are used as amplifiers. There are different types of APS, including the early NMOS APS and the now much more common complementary MOS (CMOS) APS, also known as the CMOS sensor. CMOS sensors are used in digital camera technologies such as cell phone cameras, web cameras, most modern digital pocket cameras, most digital single-lens reflex cameras (DSLRs), mirrorless interchangeable-lens cameras (MILCs), and lensless imaging for, e.g., blood cells. CMOS sensors emerged as an alternative to charge-coupled device (CCD) image sensors and eventually outsold them by the mid-2000s. The term ''active pixel sensor'' is also used to refer to the individual pixel sensor its ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Megapixel
In digital imaging, a pixel (abbreviated px), pel, or picture element is the smallest addressable element in a Raster graphics, raster image, or the smallest addressable element in a dot matrix display device. In most digital display devices, pixels are the smallest element that can be manipulated through software. Each pixel is a Sampling (signal processing), sample of an original image; more samples typically provide more accurate representations of the original. The Intensity (physics), intensity of each pixel is variable. In color imaging systems, a color is typically represented by three or four component intensities such as RGB color model, red, green, and blue, or CMYK color model, cyan, magenta, yellow, and black. In some contexts (such as descriptions of camera sensors), ''pixel'' refers to a single scalar element of a multi-component representation (called a ''photosite'' in the camera sensor context, although ''wikt:sensel, sensel'' is sometimes used), while in yet ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Global Positioning System
The Global Positioning System (GPS) is a satellite-based hyperbolic navigation system owned by the United States Space Force and operated by Mission Delta 31. It is one of the global navigation satellite systems (GNSS) that provide geolocation and time information to a GPS receiver anywhere on or near the Earth where there is an unobstructed line of sight to four or more GPS satellites. It does not require the user to transmit any data, and operates independently of any telephone or Internet reception, though these technologies can enhance the usefulness of the GPS positioning information. It provides critical positioning capabilities to military, civil, and commercial users around the world. Although the United States government created, controls, and maintains the GPS system, it is freely accessible to anyone with a GPS receiver. Overview The GPS project was started by the U.S. Department of Defense in 1973. The first prototype spacecraft was launched in 1978 an ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nikon F3
The Nikon F3 is Nikon (, ; ) is a Japanese optics and photographic equipment manufacturer. Nikon's products include cameras, camera lenses, binoculars, microscopes, ophthalmic lenses, measurement instruments, rifle scopes, spotting scopes, and equipment related to S ...'s third professional single-lens reflex camera body, preceded by the F and F2. Introduced in March 1980, it has manual and semi-automatic exposure control whereby the camera would select the correct shutter speed (aperture priority automation). The Nikon F3 series cameras has the most model variations of any Nikon F camera. It is also the first of numerous Nikon F-series cameras to be styled by Italian designer Giorgetto Giugiaro, and to include a red stripe on the handgrip – a feature that would later become (with variants of stripes and various other shapes) a signature feature of many Nikon cameras. The F2AS was a current model when the F3 was introduced, and for a while both were sold concurrently. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Photographic Lens
A camera lens, photographic lens or photographic objective is an optical lens (optics), lens or assembly of lenses (compound lens) used in conjunction with a camera body and mechanism to Imaging, make images of objects either on photographic film or on other media capable of storing an image Photosensitivity, chemically or Image sensor, electronically. There is no major difference in principle between a lens used for a still camera, a video camera, a telescope, a microscope, or other apparatus, but the details of design and construction are different. A lens might be permanently fixed to a camera, or it might be interchangeable lens camera, interchangeable with lenses of different focal lengths, apertures, and other properties. While in principle a simple lens, simple convex lens will suffice, in practice a compound lens made up of a number of optical lens elements is required to correct (as much as possible) the many optical aberrations that arise. Some aberrations will be prese ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Autofocus
An autofocus (AF) optical system uses a sensor, a control system and a motor to focus on an automatically or manually selected point or area. An electronic rangefinder has a display instead of the motor; the adjustment of the optical system has to be done manually until indication. Autofocus methods are distinguished as active, passive or hybrid types. Autofocus systems rely on one or more sensors to determine correct focus. Some AF systems rely on a single sensor, while others use an array of sensors. Most modern SLR cameras use through-the-lens optical sensors, with a separate sensor array providing light metering, although the latter can be programmed to prioritize its metering to the same area as one or more of the AF sensors. Through-the-lens optical autofocusing is usually speedier and more precise than manual focus with an ordinary viewfinder, although more precise manual focus can be achieved with special accessories such as focusing magnifiers. Autofocus accur ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nikon D5000
The D5000 is a 12.3-megapixel DX-format DSLR Nikon F-mount camera, announced by Nikon on 14 April 2009. The D5000 has many features in common with the Nikon D90, D90. It features a 2.7-inch 230,000-dot resolution Articulating screen, tilt-and-swivel LCD monitor (D90 is , 920,000 pixel, without swivel or tilt), Live preview, live view, ISO 200–3200 (100–6400 with Boost), 3D tracking Multi-CAM1000 11-point AF system, active D-Lighting system and automatic correction of lateral chromatic aberration. The D5000 seems to have been discontinued in November 2010. It was the second Nikon DSLR camera to feature movie mode after the feature was introduced by the Nikon D90, D90, though this capability has now been extended to other models as well, such as the Nikon D300S, D300S and the Nikon D3S, D3S. Some newer models are even capable of 1080p 24 frame/s video, such as the Nikon D3100, Nikon D5100 and the Nikon D7000. As with the D90, each uninterrupted movie shot at 720p is limited to 5 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nikon D3000
The Nikon D3000 is a 10.2-megapixel DX format DSLR Nikon F-mount camera announced by Nikon on 30 July 2009. It replaces the D40 as Nikon's entry level DSLR. It features a 3.0-inch 230,000-dot resolution LCD monitor, CCD sensor with ISO 100–1600 (3200 with Boost) and 3D tracking Multi-CAM1000 11-point AF system which makes it quite similar to the Nikon D200 in these main parts. Initially priced with $899 MSRP, actual prices are much lower. The D3000 was superseded by the D3100 on August 19, 2010. The D3000 is the final Nikon DSLR to use a CCD sensor. Features * Nikon's 10.2-megapixel Nikon DX format CCD sensor. * Nikon EXPEED image processor. * Camera assisted "Guide" mode. * Active D-Lighting. * Sensor cleaning. * 3.0-inch 230,000-dot resolution fixed TFT LCD * Continuous Drive up to 3 frames per second. * 3D Color Matrix Metering II with Scene Recognition System. * 3D Tracking Multi-CAM 1000 autofocus sensor module with 11 AF points. * ISO sensitivity 100 to 1600 (3200 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
