{"product_id":"svbony-sv535-f-2-8-5-element-7-group-apo-astro-camera-lens","title":"SVBONY SV535 f\/2.8 5-Element 7-Group APO Astro Camera Lens","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003e105mm Focal Length\u003c\/li\u003e\n\u003cli\u003eFast f\/2.8 Focal Ratio\u003c\/li\u003e\n\u003cli\u003eApochromatic (APO) 7-Element, 5-Group Optics\u003c\/li\u003e\n\u003cli\u003eHelical Focuser for Fine Adjustment\u003c\/li\u003e\n\u003cli\u003eIntegrated Vixen\/Arca-Swiss Dovetail Plate\u003c\/li\u003e\n\u003cli\u003eM42x0.75 Direct Camera Connection\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\u003eAPO Astro Camera Lense | SVBONY SV535\u003c\/h2\u003e\n\u003cp\u003eThe SVBONY SV535 is a dedicated 105mm f\/2.8 astrograph lens engineered specifically for wide-field imaging. Its apochromatic optical system uses a 7-element, 5-group design to deliver sharp, color-corrected stars across a full-frame sensor. Weighing an estimated 1500g, the SV535 connects directly to your astro camera via a native M42x0.75 male thread for a rigid, secure imaging train.\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\u003eFast f\/2.8 APO Optics: 105mm Wide-Field Imaging\u003c\/h3\u003e\n\u003cp\u003eThe SV535's optical design is built around its fast f\/2.8 focal ratio, allowing you to gather significant signal on faint nebulae and dust structures in a fraction of the time required by slower systems. The 105mm focal length provides a vast field of view, ideal for capturing large targets like the Andromeda Galaxy (M31) or the North America Nebula (NGC 7000) in a single frame. The apochromatic, 7-element design with full multi-coatings (FMC) ensures false color is suppressed, rendering stars as sharp, natural points of light.\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\u003eIntegrated Mounting: Helical Focuser and M42x0.75 Connection\u003c\/h3\u003e\n\u003cp\u003eUnlike standard camera lenses adapted for astronomy, the SV535 incorporates features purpose-built for astrophotography. The body includes an integrated dovetail plate compatible with both Vixen-style and Arca-Swiss saddles, eliminating the need for separate mounting rings. Focusing is achieved with a precise helical focuser, offering smooth, fine control without the image shift common in lens-based focus mechanisms. The rear of the lens terminates in a standard M42x0.75 male thread for direct, secure attachment to dedicated astronomy cameras.\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\u003eM42x0.75 Direct Connection: Bypassing Standard T-Rings\u003c\/h3\u003e\n\u003cp\u003eA critical design feature of the SV535 is its limited back focus, which necessitates a direct M42x0.75 connection to your camera. This lens is intentionally incompatible with standard DSLR or mirrorless T-rings, as they would place the camera sensor outside the focal plane. This design choice favors dedicated astronomy cameras that can achieve focus at this shorter distance, resulting in a more compact and rigid imaging train with fewer potential points of 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\u003eSVBONY SV535 vs. Rokinon 135mm f\/2: A Trade-off in Focal Length and Integration\u003c\/h3\u003e\n\u003cp\u003eImagers considering the SV535 often compare it to the popular Rokinon 135mm f\/2 lens. The choice depends on your specific needs and existing equipment.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eRokinon 135mm f\/2 Advantage:\u003c\/strong\u003e The Rokinon is optically faster at f\/2 and provides a longer 135mm focal length, offering slightly more image scale on smaller targets. It is also a conventional camera lens, making it easily adaptable to any DSLR or mirrorless body with standard adapters.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSVBONY SV535 Advantage:\u003c\/strong\u003e The SV535 is a dedicated astrograph. Its integrated dovetail, helical focuser, and native M42x0.75 thread are designed for astronomical use, providing a more stable and user-friendly platform on an equatorial mount without requiring additional rings or accessories.\u003c\/li\u003e\n\u003c\/ul\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 kind of targets is the SVBONY SV535 105mm lens best for?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe SVBONY SV535 excels at capturing extremely wide-field celestial views. It is ideal for large emission nebulae like the North America Nebula (NGC 7000), vast star-forming regions like the Rho Ophiuchi cloud complex, and sprawling galaxy groups such as the Virgo Cluster.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhy is the SVBONY SV535 incompatible with standard DSLR\/Mirrorless T-rings?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe SV535 is designed with a very short back focus distance. This means the camera sensor must be positioned much closer to the rear lens element than standard T-rings (which add significant length) allow. It is engineered for a \u003cstrong\u003edirect M42x0.75 connection\u003c\/strong\u003e to dedicated astronomy cameras that can accommodate this short distance.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow would the SVBONY SV535 frame the Andromeda Galaxy (M31) with a full-frame camera?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eWith its 105mm focal length, the SVBONY SV535 on a full-frame sensor provides a field of view of approximately 19.4° x 13.0°. This is more than enough to comfortably frame the entire Andromeda Galaxy (M31), which spans about 3°, including its faint outer extensions and satellite galaxies M32 and M110.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use the SVBONY SV535 for imaging the Rho Ophiuchi cloud complex?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, absolutely. The Rho Ophiuchi complex is a large, sprawling target that benefits greatly from the wide field of view provided by the SV535's 105mm focal length. The lens's fast f\/2.8 focal ratio is also a significant advantage for capturing the faint, colorful dust and nebulosity in this region.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat do I need to mount the SVBONY SV535 to my equatorial mount?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe SVBONY SV535 has an integrated dovetail plate built into its body. This plate is compatible with both \u003cstrong\u003eVixen-style\u003c\/strong\u003e and \u003cstrong\u003eArca-Swiss\u003c\/strong\u003e saddle clamps, so it can be mounted directly to most modern equatorial mounts and trackers without needing any additional rings or hardware.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the benefit of a helical focuser on the SVBONY SV535?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eA helical focuser allows for very fine, precise focus adjustments by rotating a collar on the lens body. Unlike the focus rings on many camera lenses, it is designed to move the optics smoothly without rotation or wobble, ensuring that your target remains centered and that focus is critically sharp, which is essential for astrophotography.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eObjective Type\u003c\/td\u003e\n\u003ctd\u003e7-Elements in 5 Groups, Apochromatic\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocal Length\u003c\/td\u003e\n\u003ctd\u003e105mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocal Ratio\u003c\/td\u003e\n\u003ctd\u003ef\/2.8\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOptical Coatings\u003c\/td\u003e\n\u003ctd\u003eFully Multi-Coated (FMC)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocuser\u003c\/td\u003e\n\u003ctd\u003eHelical\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMount Type\u003c\/td\u003e\n\u003ctd\u003eIntegrated Dovetail Plate (Vixen \u0026amp; Arca-Swiss compatible)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCamera Connection\u003c\/td\u003e\n\u003ctd\u003eM42x0.75 Male Thread\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEstimated Weight\u003c\/td\u003e\n\u003ctd\u003e1500g\u003c\/td\u003e\n\u003c\/tr\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\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/SVBONY_SV535_Manual.pdf\" target=\"_blank\"\u003e\u003csvg class=\"DAV-img-box\" viewbox=\"0 0 512 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"\u003e\u003cpath d=\"M0 64C0 28.7 28.7 0 64 0L224 0l0 128c0 17.7 14.3 32 32 32l128 0 0 144-208 0c-35.3 0-64 28.7-64 64l0 144-48 0c-35.3 0-64-28.7-64-64L0 64zm384 64l-128 0L256 0 384 128zM176 352l32 0c30.9 0 56 25.1 56 56s-25.1 56-56 56l-16 0 0 32c0 8.8-7.2 16-16 16s-16-7.2-16-16l0-48 0-80c0-8.8 7.2-16 16-16zm32 80c13.3 0 24-10.7 24-24s-10.7-24-24-24l-16 0 0 48 16 0zm96-80l32 0c26.5 0 48 21.5 48 48l0 64c0 26.5-21.5 48-48 48l-32 0c-8.8 0-16-7.2-16-16l0-128c0-8.8 7.2-16 16-16zm32 128c8.8 0 16-7.2 16-16l0-64c0-8.8-7.2-16-16-16l-16 0 0 96 16 0zm80-112c0-8.8 7.2-16 16-16l48 0c8.8 0 16 7.2 16 16s-7.2 16-16 16l-32 0 0 32 32 0c8.8 0 16 7.2 16 16s-7.2 16-16 16l-32 0 0 48c0 8.8-7.2 16-16 16s-16-7.2-16-16l0-64 0-64z\" fill=\"#0047a7\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eDownload Manual\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\n\u003cli\u003e\u003ca href=\"https:\/\/davidastro.com\/pages\/svbony-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eSVBONY Warranty Policy\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"SVBONY","offers":[{"title":"Default Title","offer_id":52861222715677,"sku":"SV-W9317A","price":239.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/SVBONY-APO-Astro-Camera-Lense-SVBONY-SV535-1_fcb16ce7-c759-4f02-9f76-73c15aeed6be.jpg?v=1788884078","url":"https:\/\/davidastro.com\/en-us\/products\/svbony-sv535-f-2-8-5-element-7-group-apo-astro-camera-lens","provider":"David Astro","version":"1.0","type":"link"}