{"product_id":"canon-lens-ef-20mm-f2-8-usm","title":"Canon Lens EF 20mm F2.8 USM","description":"\u003ch3\u003e\u003cspan\u003eCanon EF 20mm F2.8 USM\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003e• \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eLens Type:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Ultra-Wide-Angle Prime Lens\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e• \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eFocal Length:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e 20mm\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e• \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eMaximum Aperture:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e F2.8\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e• \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eMinimum Aperture:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e F22\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e• \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eLens Mount:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Canon EF\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e• \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eFormat Coverage:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Full-Frame\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e• \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eAutofocus:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Yes; Ring-type USM\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e• \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eMinimum Focus Distance:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e 0.25m\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e• \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eMaximum Magnification:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e 0.14×\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e• \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eOptical Construction:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e 11 elements in 9 groups\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e• \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eDiaphragm Blades:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e 6\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e• \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eFilter Size:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e 72mm\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e• \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eFocus Type:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Rear focusing; full-time manual focus\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e• \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eWeight:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Approx. 405g\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e• \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eDimensions:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Approx. 77.5 × 70.6mm\u003c\/span\u003e\u003c\/p\u003e\n\u003cdiv\u003e\u003chr\u003e\u003c\/div\u003e\n\u003ch3\u003e\u003cspan\u003eDescription\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eThe Canon EF 20mm F2.8 USM is a full-frame ultra-wide-angle prime lens introduced in 1992. Its 94° diagonal angle of view provides a broad perspective suited to landscapes, architecture, interiors, travel, and environmental photography.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eThe F2.8 maximum aperture offers useful flexibility in lower-light situations while maintaining a relatively compact design for a full-frame 20mm lens. Its 25cm minimum focusing distance also allows photographers to work close to subjects while emphasizing the surrounding environment.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eThe optical design uses 11 elements in 9 groups with a floating rear-focusing system. Canon's ring-type USM provides fast and quiet autofocus, while full-time manual focus allows manual adjustment without switching out of AF mode.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eWith its fixed 20mm focal length, compact 405g construction, and Canon EF compatibility, the lens remains a practical choice for photographers looking for a classic ultra-wide prime for both film and full-frame digital EOS cameras.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSerial Number: \u003c\/strong\u003e45700060\u003cbr\u003e\u003cstrong\u003eSKU:\u003c\/strong\u003e UN-123-2168\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eCondition : \u003cbr\u003e\u003c\/strong\u003e- Lens is fully functional\u003cbr\u003e- Front lens cap, rear lens cap, protective filter, and RW-75II lens hood included\u003cbr\u003e- Lens glass has no fungus, thin haze, and minor dust\u003cbr\u003e- Lens body has minor scratches\u003cbr\u003e\u003cbr\u003e- เลนส์ ทำงานเต็มระบบ\u003cbr\u003e- เลนส์ ไม่มีรา มีฝ้าบางๆ มีฝุ่นเล็กน้อย\u003cbr\u003e- สภาพตัวเลนส์ มีรอยขีดข่วนเล็กน้อย\u003cbr\u003e- มีฝาปิดหน้า-ท้ายเลนส์ มีFilter มีHood RW-75II\u003cbr\u003e\u003c\/p\u003e","brand":"CAMERA SHOP UNIT","offers":[{"title":"Default Title","offer_id":46308116299820,"sku":"UN-123-2168","price":6500.0,"currency_code":"THB","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0082\/0654\/9051\/files\/IMG_20260829_122812.jpg?v=1790682389","url":"https:\/\/unit-filmcamera.com\/zh\/products\/canon-lens-ef-20mm-f2-8-usm","provider":"UNIT CAMERA SHOP | BKK","version":"1.0","type":"link"}