{"product_id":"sigma-18-35mm-f1-8-dc-pentax-k-mount-52471570","title":"Sigma 18-35mm f1.8 DC Pentax K Mount 52471570 - 1804118","description":"\u003ch2\u003eSigma 18-35mm f1.8 DC Pentax K Mount 52471570 - 1804118\u003c\/h2\u003e\n\u003cp\u003eThis Sigma 18-35mm f1.8 DC Pentax K Mount is in great cosmetic condition with minor handling wear found throughout, please see photos for visual reference. Cosmetically, this lens has been rated at a (9) condition. This lens is in proper working order; the zoom and the focus ring turn smoothly, the autofocus is accurate, and the glass is clean and clear with no signs of fungus, haze, or marks present. This lens includes the hood and rear cap.\u003c\/p\u003e\n\u003ch5\u003eWhat our Experts Think\u003c\/h5\u003e\n\u003cul\u003e\n\u003cli data-section-id=\"fsrqmx\" data-start=\"27\" data-end=\"215\"\u003e\n\u003cstrong data-start=\"29\" data-end=\"73\"\u003eGame‑changing zoom with f\/1.8 throughout\u003c\/strong\u003e\u003cbr data-start=\"73\" data-end=\"76\"\u003eOne of the \u003cstrong data-start=\"89\" data-end=\"140\" data-is-only-node=\"\"\u003eonly zoom lenses with a constant f\/1.8 aperture\u003c\/strong\u003e, delivering exceptional low‑light performance and shallow depth of field\u003c\/li\u003e\n\u003cli data-section-id=\"dbgpv0\" data-start=\"217\" data-end=\"366\"\u003e\n\u003cstrong data-start=\"219\" data-end=\"250\"\u003eOutstanding optical quality\u003c\/strong\u003e\u003cbr data-start=\"250\" data-end=\"253\"\u003eDC optical design produces \u003cstrong data-start=\"282\" data-end=\"314\" data-is-only-node=\"\"\u003esharp, high‑contrast results\u003c\/strong\u003e across the zoom range with controlled aberrations\u003c\/li\u003e\n\u003cli data-section-id=\"w7zci2\" data-start=\"368\" data-end=\"509\"\u003e\n\u003cstrong data-start=\"370\" data-end=\"407\"\u003ePerfect for APS‑C Pentax shooters\u003c\/strong\u003e\u003cbr data-start=\"407\" data-end=\"410\"\u003eOptimized for crop sensor bodies, giving a versatile \u003cstrong data-start=\"465\" data-end=\"489\" data-is-only-node=\"\"\u003e27–52.5mm equivalent\u003c\/strong\u003e on Pentax K mount\u003c\/li\u003e\n\u003cli data-section-id=\"zw4ay2\" data-start=\"511\" data-end=\"616\"\u003e\n\u003cstrong data-start=\"513\" data-end=\"539\"\u003eFast, smooth autofocus\u003c\/strong\u003e\u003cbr data-start=\"539\" data-end=\"542\"\u003eReliable AF performance ideal for both \u003cstrong data-start=\"583\" data-end=\"614\" data-is-only-node=\"\"\u003estill photography and video\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch5\u003e\n\u003cbr\u003eQ\u0026amp;A\u003c\/h5\u003e\n\u003cp data-start=\"80\" data-end=\"271\"\u003e\u003cstrong data-start=\"80\" data-end=\"136\"\u003eQ1: What type of lens is the Sigma 18-35mm f\/1.8 DC?\u003c\/strong\u003e\u003cbr data-start=\"136\" data-end=\"139\"\u003eA: A fast, wide-to-standard zoom lens designed for APS-C Pentax DSLR cameras, ideal for general photography and creative projects.\u003c\/p\u003e\n\u003cp data-start=\"273\" data-end=\"435\"\u003e\u003cstrong data-start=\"273\" data-end=\"313\"\u003eQ2: What is this lens best used for?\u003c\/strong\u003e\u003cbr data-start=\"313\" data-end=\"316\"\u003eA: Perfect for portraits, landscapes, street photography, and low-light shooting thanks to its bright f\/1.8 aperture.\u003c\/p\u003e\n\u003cp data-start=\"437\" data-end=\"583\"\u003e\u003cstrong data-start=\"437\" data-end=\"476\"\u003eQ3: What is the focal length range?\u003c\/strong\u003e\u003cbr data-start=\"476\" data-end=\"479\"\u003eA: 18–35mm provides a versatile wide-to-standard zoom, equivalent to ~27–52.5mm on full-frame cameras.\u003c\/p\u003e\n\u003cp data-start=\"585\" data-end=\"733\"\u003e\u003cstrong data-start=\"585\" data-end=\"616\"\u003eQ4: Does it have autofocus?\u003c\/strong\u003e\u003cbr data-start=\"616\" data-end=\"619\"\u003eA: Yes, it features a Hyper Sonic Motor (HSM) for fast and quiet autofocus with full-time manual focus override.\u003c\/p\u003e\n\u003cp data-start=\"735\" data-end=\"856\"\u003e\u003cstrong data-start=\"735\" data-end=\"784\"\u003eQ5: Is it compatible with full-frame cameras?\u003c\/strong\u003e\u003cbr data-start=\"784\" data-end=\"787\"\u003eA: No, it is designed exclusively for APS-C Pentax K-mount cameras.\u003c\/p\u003e\n\u003cp data-start=\"858\" data-end=\"1020\"\u003e\u003cstrong data-start=\"858\" data-end=\"893\"\u003eQ6: What is the aperture range?\u003c\/strong\u003e\u003cbr data-start=\"893\" data-end=\"896\"\u003eA: Constant f\/1.8 aperture throughout the zoom range, allowing excellent low-light performance and shallow depth of field.\u003c\/p\u003e\n\u003cp data-start=\"1022\" data-end=\"1142\"\u003e\u003cstrong data-start=\"1022\" data-end=\"1068\"\u003eQ7: What is the minimum focusing distance?\u003c\/strong\u003e\u003cbr data-start=\"1068\" data-end=\"1071\"\u003eA: 28 cm, allowing for close-up shots with strong subject separation\u003c\/p\u003e\n\u003ch5\u003e\n\u003cbr\u003eMaintenance Tips\u003c\/h5\u003e\n\u003cul\u003e\n\u003cli data-section-id=\"59k9hk\" data-start=\"66\" data-end=\"174\"\u003e\n\u003cstrong data-start=\"68\" data-end=\"92\"\u003eUse lens hood \u0026amp; caps\u003c\/strong\u003e: Protect the large front element and minimize flare; always store with caps on.\u003c\/li\u003e\n\u003cli data-section-id=\"1xk5gcu\" data-start=\"175\" data-end=\"314\"\u003e\n\u003cstrong data-start=\"177\" data-end=\"203\"\u003eClean optics carefully\u003c\/strong\u003e: Start with a blower, then use a microfiber cloth; avoid harsh chemicals to preserve the multi-coated glass.\u003c\/li\u003e\n\u003cli data-section-id=\"1j8j51d\" data-start=\"315\" data-end=\"432\"\u003e\n\u003cstrong data-start=\"317\" data-end=\"349\"\u003eProtect from dust \u0026amp; moisture\u003c\/strong\u003e: Not fully weather-sealed—store in a dry case with silica gel to prevent fungus.\u003c\/li\u003e\n\u003cli data-section-id=\"1vbpkcp\" data-start=\"433\" data-end=\"582\"\u003e\n\u003cstrong data-start=\"435\" data-end=\"473\"\u003eHandle zoom and focus rings gently\u003c\/strong\u003e: Smooth internal zoom and HSM focus require careful handling to maintain alignment and autofocus accuracy.\u003c\/li\u003e\n\u003cli data-section-id=\"gvuo94\" data-start=\"583\" data-end=\"695\"\u003e\n\u003cstrong data-start=\"585\" data-end=\"614\"\u003eCheck electronic contacts\u003c\/strong\u003e: Clean periodically for reliable communication with the Pentax K mount camera.\u003c\/li\u003e\n\u003cli data-section-id=\"13jxfet\" data-start=\"696\" data-end=\"829\"\u003e\n\u003cstrong data-start=\"698\" data-end=\"726\"\u003eAvoid extreme conditions\u003c\/strong\u003e: Excessive heat, humidity, or sudden temperature changes can degrade internal elements and coatings.\u003c\/li\u003e\n\u003cli data-section-id=\"fx03sd\" data-start=\"830\" data-end=\"934\"\u003e\n\u003cstrong data-start=\"832\" data-end=\"854\"\u003eRegular inspection\u003c\/strong\u003e: Look for dust, haze, or fungus, especially in the 17-element optical design.\u003c\/li\u003e\n\u003cli data-section-id=\"1osimqf\" data-start=\"935\" data-end=\"1031\"\u003e\n\u003cstrong data-start=\"937\" data-end=\"971\"\u003eStore upright in a padded case\u003c\/strong\u003e: Keeps internal components stable and prolongs lens life.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Sigma","offers":[{"title":"Default Title","offer_id":43530436280394,"sku":"1804118","price":337.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0638\/2387\/2074\/files\/1804118-00.jpg?v=1776776359","url":"https:\/\/wen0d6-q0.myshopify.com\/products\/sigma-18-35mm-f1-8-dc-pentax-k-mount-52471570","provider":"Power Gear for Every Journey","version":"1.0","type":"link"}