{"product_id":"canon-300mm-f4-0l-is","title":"Canon 300mm f4.0L IS - 1890","description":"\u003ch2\u003eCanon 300mm f4.0L IS - 1890\u003c\/h2\u003e\n\u003ch5\u003eWhat our Experts Think\u003c\/h5\u003e\n\u003cul\u003e\n\u003cli data-section-id=\"xgwht2\" data-start=\"27\" data-end=\"198\"\u003e\n\u003cstrong data-start=\"29\" data-end=\"68\"\u003eClassic lightweight telephoto prime\u003c\/strong\u003e — 300 mm reach with \u003cstrong data-start=\"89\" data-end=\"108\"\u003eL‑series optics\u003c\/strong\u003e delivers sharp, high‑contrast results ideal for wildlife, sports, and outdoor shooting.\u003c\/li\u003e\n\u003cli data-section-id=\"1fyuuqo\" data-start=\"199\" data-end=\"317\"\u003e\n\u003cstrong data-start=\"201\" data-end=\"226\"\u003eConstant f\/4 aperture\u003c\/strong\u003e balances light‑gathering ability with a more portable form than faster super‑telephotos.\u003c\/li\u003e\n\u003cli data-section-id=\"ane7l2\" data-start=\"318\" data-end=\"431\"\u003e\n\u003cstrong data-start=\"320\" data-end=\"348\"\u003eImage Stabilization (IS)\u003c\/strong\u003e reduces camera shake, improving handheld shooting performance at long distances.\u003c\/li\u003e\n\u003cli data-section-id=\"kd7ehn\" data-start=\"432\" data-end=\"540\"\u003e\n\u003cstrong data-start=\"434\" data-end=\"466\"\u003eFast, accurate USM autofocus\u003c\/strong\u003e with full‑time manual focus override for confident subject acquisition.\u003c\/li\u003e\n\u003cli data-section-id=\"15rlcy8\" data-start=\"541\" data-end=\"627\"\u003e\n\u003cstrong data-start=\"543\" data-end=\"577\"\u003eWeather‑sealed pro‑grade build\u003c\/strong\u003e stands up to demanding conditions in the field.\u003c\/li\u003e\n\u003cli data-section-id=\"1o30e7v\" data-start=\"628\" data-end=\"739\"\u003e\n\u003cstrong data-start=\"630\" data-end=\"677\"\u003eCompact and lighter than f\/2.8 alternatives\u003c\/strong\u003e, making it easier to carry and handle during long sessions.\u003c\/li\u003e\n\u003cli data-section-id=\"1a4tty5\" data-start=\"740\" data-end=\"831\"\u003e\n\u003cstrong data-start=\"742\" data-end=\"780\"\u003eBest with support for extended use\u003c\/strong\u003e — monopod\/tripod recommended for all‑day shoots.\u003c\/li\u003e\n\u003cli data-section-id=\"h3b5o7\" data-start=\"832\" data-end=\"920\"\u003e\n\u003cstrong data-start=\"834\" data-end=\"878\"\u003eNot as fast in low light as f\/2.8 lenses\u003c\/strong\u003e — trade‑off for weight and affordability.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch5\u003e\n\u003cbr\u003eQ\u0026amp;A\u003c\/h5\u003e\n\u003cp data-start=\"64\" data-end=\"298\"\u003e\u003cstrong data-start=\"64\" data-end=\"125\"\u003eQ1: What type of lens is the Canon EF 300 mm f\/4L IS USM?\u003c\/strong\u003e\u003cbr data-start=\"125\" data-end=\"128\"\u003eA: It’s a \u003cstrong data-start=\"138\" data-end=\"186\"\u003eprofessional full‑frame telephoto prime lens\u003c\/strong\u003e in Canon’s L‑series, ideal for sports, wildlife, and outdoor photography. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-start=\"300\" data-end=\"516\"\u003e\u003cstrong data-start=\"300\" data-end=\"353\"\u003eQ2: What focal length and aperture does it offer?\u003c\/strong\u003e\u003cbr data-start=\"353\" data-end=\"356\"\u003eA: Fixed \u003cstrong data-start=\"365\" data-end=\"388\"\u003e300 mm focal length\u003c\/strong\u003e with a \u003cstrong data-start=\"396\" data-end=\"429\"\u003econstant f\/4 maximum aperture\u003c\/strong\u003e, delivering strong reach and subject separation. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-start=\"518\" data-end=\"734\"\u003e\u003cstrong data-start=\"518\" data-end=\"559\"\u003eQ3: Does it have image stabilization?\u003c\/strong\u003e\u003cbr data-start=\"559\" data-end=\"562\"\u003eA: Yes — built‑in \u003cstrong data-start=\"580\" data-end=\"613\"\u003eOptical Image Stabilizer (IS)\u003c\/strong\u003e that can help you shoot handheld at shutter speeds approximately two stops slower. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-start=\"736\" data-end=\"934\"\u003e\u003cstrong data-start=\"736\" data-end=\"770\"\u003eQ4: How fast is the autofocus?\u003c\/strong\u003e\u003cbr data-start=\"770\" data-end=\"773\"\u003eA: Ring‑type \u003cstrong data-start=\"786\" data-end=\"812\"\u003eUltrasonic Motor (USM)\u003c\/strong\u003e provides quick, quiet, and accurate autofocus with full‑time manual focus override. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-start=\"936\" data-end=\"1181\"\u003e\u003cstrong data-start=\"936\" data-end=\"980\"\u003eQ5: What optical quality can you expect?\u003c\/strong\u003e\u003cbr data-start=\"980\" data-end=\"983\"\u003eA: Two \u003cstrong data-start=\"990\" data-end=\"1034\"\u003eUltra‑Low Dispersion (UD) glass elements\u003c\/strong\u003e and Super Spectra coatings reduce chromatic aberration, flare, and ghosting for sharp, high‑contrast images. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-start=\"1183\" data-end=\"1384\"\u003e\u003cstrong data-start=\"1183\" data-end=\"1225\"\u003eQ6: What’s the close‑focus capability?\u003c\/strong\u003e\u003cbr data-start=\"1225\" data-end=\"1228\"\u003eA: Minimum focus distance is \u003cstrong data-start=\"1257\" data-end=\"1276\"\u003e~1.5 m (4.9 ft)\u003c\/strong\u003e with up to \u003cstrong data-start=\"1288\" data-end=\"1311\"\u003e0.24× magnification\u003c\/strong\u003e, useful for tight telephoto shots. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-start=\"1386\" data-end=\"1600\"\u003e\u003cstrong data-start=\"1386\" data-end=\"1431\"\u003eQ7: How about build quality and handling?\u003c\/strong\u003e\u003cbr data-start=\"1431\" data-end=\"1434\"\u003eA: L‑series build includes weather sealing and a \u003cstrong data-start=\"1483\" data-end=\"1519\"\u003eremovable rotating tripod collar\u003c\/strong\u003e for stable support on tripods or monopods. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-start=\"1602\" data-end=\"1783\"\u003e\u003cstrong data-start=\"1602\" data-end=\"1654\"\u003eQ8: Is this lens compatible with teleconverters?\u003c\/strong\u003e\u003cbr data-start=\"1654\" data-end=\"1657\"\u003eA: Yes — works with Canon EF \u003cstrong data-start=\"1686\" data-end=\"1716\"\u003e1.4× and 2× teleconverters\u003c\/strong\u003e to extend reach when needed. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-start=\"1785\" data-end=\"1972\"\u003e\u003cstrong data-start=\"1785\" data-end=\"1823\"\u003eQ9: What cameras is it suited for?\u003c\/strong\u003e\u003cbr data-start=\"1823\" data-end=\"1826\"\u003eA: Canon \u003cstrong data-start=\"1835\" data-end=\"1853\"\u003eEF‑mount DSLRs\u003c\/strong\u003e (full‑frame and APS‑C); on APS‑C bodies it gives an equivalent reach of ~480 mm.\u003c\/p\u003e\n\u003ch5\u003e\n\u003cbr\u003eMaintenance Tips\u003c\/h5\u003e\n\u003cdiv class=\"flex flex-col text-sm pb-25\"\u003e\n\u003csection class=\"text-token-text-primary w-full focus:outline-none [--shadow-height:45px] has-data-writing-block:pointer-events-none has-data-writing-block:-mt-(--shadow-height) has-data-writing-block:pt-(--shadow-height) [\u0026amp;:has([data-writing-block])\u0026gt;*]:pointer-events-auto scroll-mt-[calc(var(--header-height)+min(200px,max(70px,20svh)))]\" dir=\"auto\" data-turn-id=\"request-WEB:24b48ce8-ef80-482f-be1b-ede769e7ea15-15\" data-testid=\"conversation-turn-32\" data-scroll-anchor=\"true\" data-turn=\"assistant\"\u003e\n\u003cdiv class=\"text-base my-auto mx-auto pb-10 [--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 data-message-author-role=\"assistant\" data-message-id=\"1c1506bc-0289-485e-9918-c807c2c19abf\" dir=\"auto\" data-message-model-slug=\"gpt-5-mini\" 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\" data-turn-start-message=\"true\" tabindex=\"0\"\u003e\n\u003cdiv class=\"flex w-full flex-col gap-1 empty:hidden\"\u003e\n\u003cdiv class=\"markdown prose dark:prose-invert w-full wrap-break-word light markdown-new-styling\"\u003e\n\u003cul data-start=\"48\" data-end=\"708\" data-is-last-node=\"\" data-is-only-node=\"\"\u003e\n\u003cli data-section-id=\"1nk2rpb\" data-start=\"48\" data-end=\"152\"\u003e\n\u003cstrong data-start=\"50\" data-end=\"77\"\u003eClean optics carefully:\u003c\/strong\u003e Use a blower and microfiber cloth; avoid direct contact with lens glass.\u003c\/li\u003e\n\u003cli data-section-id=\"1quwp92\" data-start=\"153\" data-end=\"275\"\u003e\n\u003cstrong data-start=\"155\" data-end=\"181\"\u003eProtect lens elements:\u003c\/strong\u003e Always use front\/rear caps, UV\/filter, and lens hood to prevent scratches, dust, and flare.\u003c\/li\u003e\n\u003cli data-section-id=\"1gg9wvv\" data-start=\"276\" data-end=\"374\"\u003e\n\u003cstrong data-start=\"278\" data-end=\"297\"\u003eStore properly:\u003c\/strong\u003e Keep in a dry, padded case with silica gel to prevent moisture and fungus.\u003c\/li\u003e\n\u003cli data-section-id=\"h3kaw1\" data-start=\"375\" data-end=\"456\"\u003e\n\u003cstrong data-start=\"377\" data-end=\"406\"\u003eHandle focus \u0026amp; IS gently:\u003c\/strong\u003e Operate rings smoothly; never force mechanisms.\u003c\/li\u003e\n\u003cli data-section-id=\"r1h0rq\" data-start=\"457\" data-end=\"535\"\u003e\n\u003cstrong data-start=\"459\" data-end=\"488\"\u003eAvoid extreme conditions:\u003c\/strong\u003e Protect from rain, dust, heat, and humidity.\u003c\/li\u003e\n\u003cli data-section-id=\"5spema\" data-start=\"536\" data-end=\"624\"\u003e\n\u003cstrong data-start=\"538\" data-end=\"560\"\u003eInspect regularly:\u003c\/strong\u003e Check for dust inside, mechanical wear, and IS functionality.\u003c\/li\u003e\n\u003cli data-section-id=\"j32tit\" data-start=\"625\" data-end=\"708\" data-is-last-node=\"\"\u003e\n\u003cstrong data-start=\"627\" data-end=\"648\"\u003eTransport safely:\u003c\/strong\u003e Use a tripod collar and dedicated case for secure handling.\u003c\/li\u003e\n\u003c\/ul\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","brand":"Canon","offers":[{"title":"Default Title","offer_id":46395454587030,"sku":"1890","price":1011.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0680\/3128\/3350\/files\/1890-00.jpg?v=1779693603","url":"https:\/\/paw-counter.com\/products\/canon-300mm-f4-0l-is","provider":"Move Better Every Day","version":"1.0","type":"link"}