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The Nikon D4 is a 16.2-megapixel professional-grade full frame (35mm) digital single-lens reflex camera (DSLR) announced by Nikon Corporation on 6 January 2012. It succeeds the Nikon D3S and introduces a number of improvements including a 16.2 megapixel sensor, improved auto-focus and metering sensors and the ability to shoot at an extended ISO speed of 204,800.〔(【引用サイトリンク】url=http://www.engadget.com/2012/01/05/nikon-d4-dslr-camera/ )〕 The camera was released in February 2012 at a recommended retail price of $5999.95.〔 It is the first camera to use the new XQD memory cards. The Nikon D4 is aimed at sports and action photographers and photojournalists. With a continuous shooting rate of 10fps, a 20-second burst would yield 200 full-resolution images with full metering and autofocus for each frame. If exposure and focus are locked, the shooting rate can be increased to 11fps. == Features == *16.4 effective megapixel Full-Frame (36 mm × 24 mm) sensor with ISO 100–12800 (ISO 50–204800 Boost) *Nikon Expeed 3 image/video processor *91,000 pixel RGB metering sensor with Advanced Scene Recognition System *Advanced Multi-CAM3500FX auto-focus sensor (51-point, 15 cross-type) *0.12 s start up time and 0.042 s shutter release delay. *Image sensor cleaning *Ten frames per second in continuous FX mode (eleven frames per second with auto-exposure and auto-focus disabled) *Buffer for 100 RAW or 200 JPEG frames in one burst *Built-in HDR and time lapse modes *Built-in 10/100 base-T Ethernet port for data transfers and tethered shooting. *1080p Full HD movie mode at 24 fps worldwide and 25 or 30 depending on region, 720p at 25/50 or 30/60 fps, HDMI HD video out with support of uncompressed video output, stereo monitor headphone out, and stereo input (3.5-mm diameter) with manual sound level control. *Kevlar/carbon fibre composite shutter with a rating of 400,000 actuations *Live View with either phase detect or improved contrast detect Auto Focus *Virtual horizon indicates in Live View mode, also available during video capture *'Active D-Lighting' with 6 settings and bracketing (adjusts metering and D-Lighting curve) *Dual card slots, one CompactFlash UDMA and one XQD card slot (mirror, overflow, back-up, RAW on 1/JPEG on 2, Stills on 1/Movies on 2, copy) *Fully weather sealed with O-rings * GPS interface for direct geotagging supported by Nikon GP-1 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Nikon D4」の詳細全文を読む スポンサード リンク
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