{"product_id":"optolong-l-pro-ut-eos-ff-ultra-thin-clip-in-filter","title":"Optolong L-Pro UT EOS-FF Ultra-Thin Clip-In Filter","description":"\u003cdiv style=\"padding:20px;border-left:4px solid #168b9b;background:#f3f8fa;\"\u003e\n\u003ch2\u003eBroadband astrophotography with your Canon full-frame DSLR\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eThe Optolong L-Pro UT EOS-FF is an ultra-thin clip-in light pollution filter for compatible Canon EOS full-frame DSLR cameras.\u003c\/strong\u003e It combines the L-Pro multi-bandpass response with Optolong's UT design, intended to reduce the edge-image effects that some wide-angle lenses can show when a filter is placed behind the lens.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0523\/1650\/4241\/files\/S6c280e24bd3e4d359e3f649a6325789cD.jpg?v=1794073660\" alt=\"Optolong L-Pro UT filter with rectangular Canon EOS-FF clip-in frame and L-Pro UT marking\" width=\"800\" height=\"800\" loading=\"lazy\" style=\"display:block;max-width:100%;height:auto;margin:24px auto;\"\u003e\u003c\/p\u003e\n\u003ch2\u003eWhy choose the L-Pro UT?\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eUltra-thin optical design:\u003c\/strong\u003e intended to reduce the image-edge effects associated with using clip-in filters behind some wide-angle, ultra-wide-angle and fisheye lenses.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBroadband target coverage:\u003c\/strong\u003e the L-Pro response suits subjects such as galaxies, reflection nebulae and globular clusters.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSelective light pollution reduction:\u003c\/strong\u003e suppresses selected wavelengths from sodium and mercury-vapour lighting and atmospheric skyglow.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBalanced spectral transmission:\u003c\/strong\u003e retains broad transmission regions alongside important nebular emission lines.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCanon EOS-FF fit:\u003c\/strong\u003e a dedicated in-camera clip format for the compatible DSLR bodies listed below.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eCamera compatibility — check before ordering\u003c\/h2\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth scope=\"col\"\u003eCamera or system\u003c\/th\u003e\n\u003cth scope=\"col\"\u003eCompatibility\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eCanon EOS 6D\u003c\/th\u003e\n\u003ctd\u003eCompatible\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eCanon EOS 5D Mark II\u003c\/th\u003e\n\u003ctd\u003eCompatible\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eCanon EOS 5D Mark III\u003c\/th\u003e\n\u003ctd\u003eCompatible\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eCanon EOS 6D Mark II\u003c\/th\u003e\n\u003ctd\u003eNot compatible\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eCanon EOS 5D Mark IV\u003c\/th\u003e\n\u003ctd\u003eNot compatible\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eCanon EOS R mirrorless \/ EOS-C APS-C\u003c\/th\u003e\n\u003ctd\u003eRequire their own camera-specific filter format\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003eUse with compatible Canon EF lenses on the supported full-frame DSLR bodies. If your camera is not listed above, please check with Dark Clear Skies before ordering.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eLive View is required:\u003c\/strong\u003e Optolong's EOS-FF clip-in design holds the DSLR mirror raised, affecting the optical viewfinder. Compose and focus using Live View with the filter installed.\u003c\/p\u003e\n\u003ch2\u003eWhat the L-Pro response does\u003c\/h2\u003e\n\u003cp\u003eThe L-Pro selectively reduces unwanted wavelengths while transmitting broad portions of the visible spectrum. This makes it useful for broadband subjects as well as nebular emission, with colour balance forming part of the filter's design.\u003c\/p\u003e\n\u003cp\u003eImportant transmitted emission lines include H-beta, OIII, H-alpha, NII and SII. The benefit is improved contrast against the sky background where the unwanted light falls within the filter's rejection bands. It does not increase the object's brightness or remove all light pollution.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0523\/1650\/4241\/files\/7c815045ba97fb81bf0f0f6ebcf30612.jpg?v=1794073659\" alt=\"Optolong L-Pro reference transmission graph showing wavelength in nanometres and transmission percentage\" width=\"860\" height=\"459\" loading=\"lazy\" style=\"display:block;max-width:100%;height:auto;margin:20px auto;\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003csmall\u003eOptolong L-Pro reference transmission curve. This illustrates the L-Pro family's spectral response; it is not an individual test certificate for the supplied UT filter.\u003c\/small\u003e\u003c\/p\u003e\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eBrand\u003c\/th\u003e\n\u003ctd\u003eOptolong\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eModel\u003c\/th\u003e\n\u003ctd\u003eL-Pro UT EOS-FF\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eFilter design\u003c\/th\u003e\n\u003ctd\u003eUltra-thin, multi-bandpass light pollution filter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eMounting format\u003c\/th\u003e\n\u003ctd\u003eCanon EOS full-frame DSLR clip-in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eConfirmed camera bodies\u003c\/th\u003e\n\u003ctd\u003eEOS 6D, EOS 5D Mark II, EOS 5D Mark III\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eLens system\u003c\/th\u003e\n\u003ctd\u003eCanon EF on compatible DSLR bodies\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eShooting method\u003c\/th\u003e\n\u003ctd\u003eLive View\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch2\u003eUsing your filter\u003c\/h2\u003e\n\u003cp\u003eHandle the filter carefully by its frame and follow Optolong's fitting guidance. Lens designs vary, so the ultra-thin construction should not be taken as a guarantee of identical corner performance with every lens. Check focus and the edges of your first test exposure before beginning an imaging session.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eNot a solar filter.\u003c\/strong\u003e Do not use this filter to observe or photograph the Sun.\u003c\/p\u003e\n\u003ch2\u003eChoosing the right Optolong filter\u003c\/h2\u003e\n\u003cp\u003eExplore our \u003ca href=\"https:\/\/www.darkclearskies.co.uk\/collections\/optolong-hub-camera-clips\"\u003eOptolong camera clip filters\u003c\/a\u003e or browse the \u003ca href=\"https:\/\/www.darkclearskies.co.uk\/collections\/optolong\"\u003eOptolong range at Dark Clear Skies\u003c\/a\u003e. For the manufacturer's body-fit information, see the \u003ca href=\"https:\/\/optolong.com\/cms\/document\/detail\/id\/108.html\"\u003eOptolong camera compatibility guide\u003c\/a\u003e.\u003c\/p\u003e","brand":"Optolong","offers":[{"title":"Default Title","offer_id":55729640800632,"sku":"L-PRO-UT-EOS-FF","price":179.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0523\/1650\/4241\/files\/S6c280e24bd3e4d359e3f649a6325789cD.jpg?v=1794073660","url":"https:\/\/www.darkclearskies.co.uk\/products\/optolong-l-pro-ut-eos-ff-ultra-thin-clip-in-filter","provider":"Dark Clear Skies ","version":"1.0","type":"link"}