{"product_id":"svbony-sv194-wide-48mm-t-ring-adapter-for-nikon-f-mount","title":"SVBONY SV194 Wide 48mm T-Ring Adapter for Nikon F-Mount","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eConnects Nikon F-Mount cameras to M48 (2-inch filter) threads\u003c\/li\u003e\n\u003cli\u003eWide 48mm clear aperture minimizes vignetting on full-frame sensors\u003c\/li\u003e\n\u003cli\u003ePrecision-machined for a secure, no-flex connection\u003c\/li\u003e\n\u003cli\u003eDurable all-metal construction\u003c\/li\u003e\n\u003cli\u003eMatte-black interior to reduce internal reflections\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- more --\u003e\n\u003cul class=\"tabs\"\u003e\n\u003cli class=\"active\"\u003eDescription\u003c\/li\u003e\n\u003cli\u003eFAQ\u003c\/li\u003e\n\u003cli\u003eSpecifications\u003c\/li\u003e\n\u003cli\u003eIn the Box\u003c\/li\u003e\n\u003cli\u003eWarranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul class=\"tabs-content\"\u003e\n\u003cli class=\"active\"\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section-center\"\u003e\n\u003ch2\u003eSVBONY SV194 Photography Adapter for Nikon Camera w\/ F-Mount\u003c\/h2\u003e\n\u003cp\u003eThe SVBONY SV194 Photography Adapter creates a dedicated mechanical connection between a Nikon F-mount camera body and any telescope focuser, field flattener, or corrector with M48x0.75 threads. This wide T-ring is engineered to provide a stable, secure link for astrophotography, ensuring your camera sensor is held perfectly parallel to the focal plane without flexure.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eSecure Connection: The SV194 Nikon F-Mount to 48mm T-Adapter\u003c\/h3\u003e\n\u003cp\u003eThis adapter provides a direct, camera-specific connection that is more stable and precise than universal adapters. By matching the Nikon F-mount bayonet on one side and the common M48 accessory thread on the other, the SV194 eliminates potential points of failure or misalignment in your imaging train. The result is a rigid connection that reliably supports the weight of a DSLR camera for long-exposure astrophotography.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003e48mm vs. 42mm T-Rings: Why Wider Matters for Full-Frame Sensors\u003c\/h3\u003e\n\u003cp\u003eWhile standard T-rings use a 42mm (M42) thread, the SVBONY SV194 adapter utilizes the larger 48mm (M48) standard. This wider aperture is critical for imagers using full-frame DSLR cameras, such as the Nikon D810 or D850. A 42mm thread can act as a bottleneck, causing vignetting (darkening) in the corners of large sensors, while the 48mm opening of the SV194 ensures the entire sensor is fully illuminated by the corrected field from your flattener or reducer.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the primary use for the SVBONY SV194 adapter?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe SVBONY SV194 is a T-ring adapter designed specifically for astrophotography. It allows you to securely attach a \u003cstrong\u003eNikon F-mount DSLR camera\u003c\/strong\u003e body directly to a telescope's focuser, field flattener, or other imaging accessory that uses a standard \u003cstrong\u003eM48x0.75 thread\u003c\/strong\u003e (often called a \"wide\" T-thread or 2-inch filter thread).\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWill the SV194 adapter work with my Nikon D850 on a telescope with a 2-inch focuser?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, this is an ideal combination. The Nikon D850 is a full-frame camera, and the SV194's wide 48mm aperture is designed to prevent vignetting on large sensors. You will typically thread the SV194 onto a 2-inch nosepiece or directly onto a field flattener that terminates in M48 threads, which then inserts into your 2-inch focuser.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhy should I choose this 48mm SV194 T-Ring over a standard 42mm version?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eChoose the 48mm SV194 T-Ring if you are using a \u003cstrong\u003efull-frame camera\u003c\/strong\u003e or an imaging system with a large, corrected image circle. The wider 48mm opening passes more light to the corners of the sensor than a 42mm ring, significantly reducing or eliminating mechanical vignetting that can be difficult to correct with flat frames.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eDoes the SVBONY SV194 adapter add any optical elements?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNo. The SV194 is a purely mechanical adapter. It contains no lenses or glass and does not alter the focal length or optical properties of your telescope. Its sole function is to create a secure physical connection between the camera and the telescope.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use the SV194 to image the Andromeda Galaxy (M31) with my full-frame Nikon and a field flattener?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eAbsolutely. This is a perfect application for the SV194. When imaging a large target like the Andromeda Galaxy (M31), you want to use the entire area of your full-frame sensor. The SV194's 48mm aperture ensures that the light cone from your field flattener isn't clipped before it reaches the sensor, preserving brightness and detail in the corners of your image.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs the SV194 compatible with Nikon Z-mount mirrorless cameras?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNo. This adapter is designed exclusively for the \u003cstrong\u003eNikon F-mount\u003c\/strong\u003e, which is the standard for Nikon DSLR cameras. It will not physically attach to a Nikon Z-mount mirrorless camera body. You would need a different T-ring specifically made for the Z-mount.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eSV194 Photography Adapter for Nikon F-Mount\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\n\u003cli\u003e\n\u003ca href=\"https:\/\/davidastro.com\/pages\/svbony-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eSVBONY 2-Year Warranty\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"SVBONY","offers":[{"title":"Default Title","offer_id":52861267575069,"sku":"SV-W1077B","price":9.59,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/SVBONY-SV194-Photography-Adapter-for-Nikon-Camera-w-F-Mount-1_612176eb-8e45-4e5d-8e6a-31b175d7d1b2.jpg?v=1788660863","url":"https:\/\/davidastro.com\/fr-us\/products\/svbony-sv194-wide-48mm-t-ring-adapter-for-nikon-f-mount","provider":"David Astro","version":"1.0","type":"link"}