{"product_id":"takahashi-wide-mount-t-ring-for-canon-eos-dx-wr","title":"Takahashi Wide Mount T-Ring for Canon EOS (DX-WR)","description":"\u003ch3\u003e\u003cstrong\u003eProduct Overview\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eTakahashi's Wide T-Mount DX-WR for Canon EOS, part TKA01251, is the camera-side ring that mounts a Canon EOS DSLR or mirrorless body onto a Takahashi telescope's wide-mount system. Takahashi lists its telescope-side thread as M54 x 0.75 male, and the camera side bayonets straight onto an EF mount — mirrorless Canon bodies need an EF adapter in addition.\u003c\/p\u003e\u003cp\u003eIt sits at the very back of the imaging train, the last ring before the camera itself.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eWho It's For\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eThis is a good match if you shoot with a Canon EOS body and are building or completing a Takahashi wide-mount imaging train — the DX-WR wide ring, your Canon body, and this T-ring connecting the two.\u003c\/p\u003e\u003cp\u003eTakahashi builds the DX-WR to two different taper diameters, 52 mm for Canon and 49 mm for Nikon, and the rings aren't interchangeable between mounts — Nikon shooters need the separate Nikon version.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eKey Features \u0026amp; Design\u003c\/strong\u003e\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eM54 x 0.75 male telescope-side thread:\u003c\/strong\u003e threads onto Takahashi's wide-mount ring system.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCanon EF-mount camera side:\u003c\/strong\u003e bayonets directly onto a Canon EOS body.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWide taper design:\u003c\/strong\u003e Takahashi's DX-WR series uses a wider taper than the standard T-mount DX-S, aimed at reducing play with heavier bodies.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003e\u003cstrong\u003eRecommended Uses\u003c\/strong\u003e\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrime-focus imaging with a Canon EOS body\u003c\/strong\u003e through a Takahashi telescope's wide-mount system.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompleting a DX-WR imaging train\u003c\/strong\u003e alongside the matching wide ring.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003e\u003cstrong\u003eCompatibility and Accessory Notes\u003c\/strong\u003e\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCanon EOS (EF mount) only.\u003c\/strong\u003e It isn't compatible with the Nikon version of this ring — the two use different taper diameters.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThreads onto Takahashi's M54 x 0.75 wide-mount ring,\u003c\/strong\u003e not directly onto a telescope's drawtube.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBackfocus contribution:\u003c\/strong\u003e as the last part before the camera body, its contribution to total backfocus is normally worked out from your camera's own flange distance instead — send us your telescope and camera body and we'll work out the full spacing with you, alongside our \u003ca href=\"\/pages\/takahashi-back-focus-guide\"\u003eTakahashi Back Focus Guide\u003c\/a\u003e.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003e\u003cstrong\u003eGood to Know Before You Order\u003c\/strong\u003e\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eIt needs the matching DX-WR wide ring\u003c\/strong\u003e ahead of it to complete the train — this ring alone doesn't attach to a telescope. Tell us what you already have and we'll confirm the parts list.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMirrorless Canon bodies\u003c\/strong\u003e — an EOS R-series body, for instance — need an EF-to-mirrorless adapter alongside this ring, since it's built for the EF-mount bayonet.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003e\u003cstrong\u003eFrequently Asked Questions\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eIs it difficult to set up?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eNo — it threads onto the wide ring and the camera bayonets on the way any T-ring mounts.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes it fit Nikon cameras?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eNo. Nikon F-mount bodies need the separate Nikon DX-WR ring, built to a different taper.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes it come with the wide ring itself?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eNo — this is the camera-side T-ring only. The wide ring is a separate part.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes it add optical path length?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eIts contribution to backfocus comes from your camera's flange distance rather than the ring itself — send us your imaging train and we'll confirm the full spacing.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eBottom Line\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eIn short: Takahashi's Canon EF-mount T-ring for the DX-WR wide-mount system — M54 x 0.75 to the wide ring, EF bayonet to the camera. It's what connects a Canon EOS body to a Takahashi wide-mount imaging train.\u003c\/p\u003e","brand":"Takahashi","offers":[{"title":"Default Title","offer_id":54047922159727,"sku":"TAK-TKA01251","price":185.9,"currency_code":"CAD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/tka01251_6.jpg?v=1786936670","url":"https:\/\/ontariotelescope.com\/products\/takahashi-wide-mount-t-ring-for-canon-eos-dx-wr","provider":"Ontario Telescope and Accessories","version":"1.0","type":"link"}