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The Nikon FM3A is an interchangeable-lens, focal-plane shutter, 35 mm film, single-lens reflex (SLR) camera. It was manufactured by Nikon Corporation in Japan, on small-volume assembly lines, from 2001 to 2006. The camera was available in two colours: all black and satin chrome. The introductory US list price for the chrome body only (no lens) was $820. The FM3A was the successor to the renowned Nikon FM2N camera of 1984 and was the last member of the successful, semi-professional line of Nikon compact 35 mm film SLRs. The other members were the Nikon FM (released 1977), FE (1978), FM2 (1982) and FE2 (1983). They (and the Nikon FA) all used the superficially similar (but not identical) rugged copper-aluminium alloy chassis and high-quality Nikon vertical bearing-mounted metal shutter and ball-bearing mounted film advance, but with improved feature levels, minor external controls and cosmetic differences. The newer low-budget Nikon FM10 and FE10, while named similarly, are completely different introductory-level cameras manufactured by Cosina. The major improvements in the FM3A compared to the FM2N are the hybrid electro-mechanically controlled aluminium-bladed focal plane shutter, the aperture priority auto-exposure mode, the match-needle exposure control system and provision for through-the-lens (TTL) off-the-film (OTF) electronic flash automation. In other words, the FM3A merged the robust mechanical systems of the FM2N with the proven, reliable electronic exposure controls of the FE2. == Features == The FM3a is built to a high level of workmanship and material quality. It shares the advantages of the FM and the FM2n, both generally regarded as two of the most reliable cameras ever built (both in terms of operation under extreme conditions and in day-to-day reliability reports from repair shops and magazine surveys). It has an extremely strong body of copper silumin alloy. The electronics are well protected within the body and of extremely high quality, including the flexible circuits. The FM3a's film transport consists of high-strength hardened metal gears and moving parts, mounted on clusters of ball bearings. The vertical metal shutter utilises precision tapered high-strength aluminium alloy blades and oilless self-lubricating bearings. The guide rails are made of stainless steel. The mirror is made of titanium. It is large to reduce chances of vignetting with super-telephotos of up to 800 mm, and uses the same mechanism found on Nikon's pro F2, with some improvements designed to further reduce effects of vibration and mirror bounce. The FM3A accepts all of the Nikkor lenses with the Nikon F bayonet mount that support the Automatic Indexing (AI) feature (AI, AIS), first introduced in 1977.〔(【引用サイトリンク】accessdate=2006-01-03 )〕 The chrome FM3A was often sold in a kit that includes a color coordinated chrome finished Nikkor 45 mm f/2.8P lens. This special flat "pancake" lens was manually focused on the FM3a, but contained a CPU which could communicate focal distance to Nikon's later autofocus (AF) camera bodies. Other accessories for the FM3A include the Nikon MD-12 motor drive (automatic film advance up to 3.2 frames per second), as well as the Nikon MF-16 databack (sequential numbering, time or date stamping on the film), and the various compatible Nikon TTL flashes (SB-15, SB-16b, SB-20, etc.) In manual mode, the camera is completely mechanical in operation, and only requires batteries for the light metering information system. In aperture priority mode, the batteries continued to power the meter, but are also utilized for shutter timing and the exposure control electronics. The FM3A's metering information system consisted of a match-needle system using two needles pointing along a vertical shutter speed scale on the left side of the viewfinder to indicate the readings of the built-in 60/40% centerweighted silicon photodiode light meter versus the actual camera settings. This system can be traced back to the Nikkormat EL (Nikomat EL in Japan) of 1972. The viewfinder also has Nikon's fully interchangeable bright focus screen with various options for focus. 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 FM3A」の詳細全文を読む スポンサード リンク
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