{"product_id":"nikon-nikkor-300mm-f4-5-ai","title":"Nikon Nikkor 300mm F4.5 Ai","description":"\u003cdiv class=\"qMYqUG_convSearchResultHighlightRoot\"\u003e\n\u003cdiv class=\"\"\u003e\n\u003csection class=\"text-token-text-primary w-full focus:outline-none has-data-writing-block:pointer-events-none [\u0026amp;:has([data-writing-block])\u0026gt;*]:pointer-events-auto R6Vx5W_threadScrollVars scroll-mb-[calc(var(--scroll-root-safe-area-inset-bottom,0px)+var(--thread-response-height))] scroll-mt-[calc(var(--header-height)+min(200px,max(70px,20svh)))]\" dir=\"auto\"\u003e\n\u003cdiv class=\"text-base my-auto mx-auto pb-8 [--thread-content-margin:var(--thread-content-margin-xs,calc(var(--spacing)*4))] @w-sm\/main:[--thread-content-margin:var(--thread-content-margin-sm,calc(var(--spacing)*6))] @w-lg\/main:[--thread-content-margin:var(--thread-content-margin-lg,calc(var(--spacing)*16))] px-(--thread-content-margin)\"\u003e\n\u003cdiv class=\"[--thread-content-max-width:40rem] @w-lg\/main:[--thread-content-max-width:48rem] mx-auto max-w-(--thread-content-max-width) flex-1 group\/turn-messages focus-visible:outline-hidden relative flex w-full min-w-0 flex-col agent-turn\"\u003e\n\u003cdiv class=\"flex max-w-full flex-col gap-4 grow\"\u003e\n\u003cdiv dir=\"auto\" class=\"min-h-8 text-message relative flex w-full flex-col items-end gap-2 text-start break-words whitespace-normal outline-none keyboard-focused:focus-ring [.text-message+\u0026amp;]:mt-1\" tabindex=\"0\"\u003e\n\u003cdiv class=\"flex w-full flex-col gap-1 empty:hidden\"\u003e\n\u003cdiv class=\"markdown prose dark:prose-invert wrap-break-word w-full light markdown-new-styling\"\u003e\n\u003ch3\u003e\u003cb\u003eNikkor 300mm f\/4.5 AI\u003c\/b\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eLens Mount:\u003c\/b\u003e \u003cb\u003eNikon F Mount (AI - Aperture Indexing)\u003c\/b\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eProduction Period:\u003c\/b\u003e 1977 – 1978 (ซีเรียลนัมเบอร์: 480001 – 520286)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eFormat Coverage:\u003c\/b\u003e 35mm Full-Frame (FX)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eFocal Length:\u003c\/b\u003e 300mm (เทียบเท่า \u003cb\u003e450mm\u003c\/b\u003e บนกล้องนิคอนเซนเซอร์ DX \/ APS-C)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eMaximum Aperture:\u003c\/b\u003e f\/4.5\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eMinimum Aperture:\u003c\/b\u003e f\/32\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eOptical Construction:\u003c\/b\u003e 6 Elements in 5 Groups (โครงสร้างเลนส์ดั้งเดิม Classic optical layout)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eAngle of View:\u003c\/b\u003e 8° 10' (บนกล้อง Full-Frame)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eMinimum Focus Distance:\u003c\/b\u003e \u003cb\u003e4.0 m (13 ft)\u003c\/b\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eFocusing System:\u003c\/b\u003e Manual Focus (เฮลิคอยด์หมุนนุ่มนวล ระยะหมุนโฟกัสยาวช่วยให้หมุนได้แม่นยำ)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eDiaphragm Blades:\u003c\/b\u003e 6 Blades\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eFilter Size:\u003c\/b\u003e \u003cb\u003e72 mm\u003c\/b\u003e (Screw-in filter)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eBuilt-in Features:\u003c\/b\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eBuilt-in Telescopic Hood:\u003c\/b\u003e ฮู้ดโลหะสไลด์ดึงออก\/เก็บได้ในตัว\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eRotating Tripod Collar:\u003c\/b\u003e คอลลาร์ยึดขาตั้งกล้องแบบหมุนได้ 360 องศา ปรับแนวตั้ง-แนวนอนได้สะดวก (ถอดแยกไม่ได้)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eDimensions:\u003c\/b\u003e Approx. \u003cb\u003e78.5 × 200 mm\u003c\/b\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eWeight:\u003c\/b\u003e Approx. \u003cb\u003e1,100 g\u003c\/b\u003e (1.1 kg)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eDescription\u003c\/h3\u003e\n\u003cp\u003eThe \u003cb\u003eNikkor 300mm f\/4.5 AI\u003c\/b\u003e is a classic manual-focus telephoto prime lens introduced by Nikon in 1977. Serving as a refined update to the earlier non-AI 300mm variants, this lens implemented Nikon’s factory \u003cb\u003eAutomatic Maximum Aperture Indexing (AI)\u003c\/b\u003e system, allowing seamless exposure metering with AI-compatible film SLRs, modern DSLRs, and mirrorless bodies via FTZ adapters.\u003c\/p\u003e\n\u003cp\u003eBuilt like a tank, the lens features an all-metal barrel, a tactile diamond-patterned rubber focus ring with a long focus throw for precise adjustments, an \u003cb\u003eintegrated built-in telescopic lens hood\u003c\/b\u003e, and a \u003cb\u003e360-degree rotating tripod collar\u003c\/b\u003e. Its optical construction consists of \u003cb\u003e6 elements in 5 groups\u003c\/b\u003e, delivering sharp central resolution, contrast-rich color rendition, and impressive background compression when stopped down to f\/5.6 or f\/8.\u003c\/p\u003e\n\u003cp\u003eWith a maximum aperture of f\/4.5, a minimum focus distance of \u003cb\u003e4.0 meters\u003c\/b\u003e, and a standard \u003cb\u003e72mm filter thread\u003c\/b\u003e, the Nikkor 300mm f\/4.5 AI remains a durable, accessible, and high-performing vintage telephoto tool for collectors, film enthusiasts, and nature\/landscape photographers seeking classic manual telephoto optics.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp\u003e\u003cstrong\u003eSerial Number:\u003c\/strong\u003e 531515\u003cbr\u003e\u003cstrong\u003eSKU:\u003c\/strong\u003e UN-124-2214\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eCondition\u003c\/strong\u003e:\u003cbr\u003e- Lens is fully functional\u003cbr\u003e- Front lens cap, rear lens cap, and protective filter included\u003cbr\u003e- Lens glass has no fungus, thin haze, and minor dust\u003cbr\u003e- Lens body has moderate scratches\u003cbr\u003e\u003cbr\u003e- เลนส์ ทำงานเต็มระบบ\u003cbr\u003e- เลนส์ ไม่มีรา มีฝ้าบางๆ มีฝุ่นเล็กน้อย\u003cbr\u003e- สภาพตัวเลนส์ มีรอยขีดข่วนปานกลาง\u003cbr\u003e- มีฝาปิดหน้า-ท้ายเลนส์ มีFilter\u003cbr\u003e\u003cstrong\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\u003c\/ul\u003e","brand":"CAMERA SHOP UNIT","offers":[{"title":"Default Title","offer_id":46255665709100,"sku":"UN-124-2214","price":4000.0,"currency_code":"THB","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0082\/0654\/9051\/files\/IMG_20260821_133040.jpg?v=1790252250","url":"https:\/\/unit-filmcamera.com\/zh\/products\/nikon-nikkor-300mm-f4-5-ai","provider":"UNIT CAMERA SHOP | BKK","version":"1.0","type":"link"}