{"product_id":"starizona-m42-to-m48-step-ring","title":"Starizona M42 to M48 Step Ring","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eAdapts M42 Female Threads to M48 Male Threads\u003c\/li\u003e\n\u003cli\u003eAdds 0mm to the Optical Path\u003c\/li\u003e\n\u003cli\u003eUltra-Thin Step-Up Ring Design\u003c\/li\u003e\n\u003cli\u003eConnects M42 Male Accessories to M48 Female Ports\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\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\u003eStarizona M42 to M48 Step Ring\u003c\/h2\u003e\n\u003cp\u003eThe Starizona M42 to M48 Step Ring adapts internal M42 female threads to external M48 male threads, adding precisely 0mm of optical path length to your 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\u003eA 0mm Path from M42 to M48\u003c\/h3\u003e\n\u003cp\u003eThis adapter provides a direct conversion from the smaller M42 thread standard to the larger M48 format common on 2-inch accessories like filter wheels and camera adapters. Its key feature is a zero-profile design that adds 0mm of length to your optical train.\u003c\/p\u003e\n\u003cp\u003eMaintaining exact back focus is critical when using focal reducers and field flatteners. By consuming no optical path length, the Starizona M42 to M48 Step Ring allows you to connect M42-threaded components to M48-threaded hardware without altering the carefully calculated spacing your corrector requires. This makes it an essential component for building a rigid, threaded imaging train with mixed components.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\n\u003cli\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the primary function of the Starizona M42 to M48 Step Ring?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe Starizona M42 to M48 Step Ring is designed to connect two components with different thread sizes. An accessory with M42 male threads (such as a T-ring or camera adapter) threads into the ring, and the ring then threads into a device with M48 female threads (such as a 2-inch filter holder or field flattener).\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eDoes the Starizona M42 to M48 Step Ring increase the length of my imaging train?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNo. The adapter is specifically engineered to add \u003cstrong\u003e0mm of optical path length\u003c\/strong\u003e. This means it does not consume any of your available back focus, which is crucial for ensuring that field flatteners and focal reducers work at their designed distance.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat are the thread types on the Starizona M42 to M48 Step Ring?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe adapter features \u003cstrong\u003eM42 female threads\u003c\/strong\u003e on the inside and \u003cstrong\u003eM48 male threads\u003c\/strong\u003e on the outside, allowing you to \"step up\" from the smaller M42 format to the larger M48 format.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\n\u003cli\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eInner Thread\u003c\/td\u003e\n\u003ctd\u003eM42 female\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOuter Thread\u003c\/td\u003e\n\u003ctd\u003eM48 male\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAdded Optical Path\u003c\/td\u003e\n\u003ctd\u003e0mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/li\u003e\n\n\u003cli\u003e\n\u003ca href=\"https:\/\/davidastro.com\/pages\/starizona-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eStarizona Warranty\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Starizona","offers":[{"title":"Default Title","offer_id":68045003063581,"sku":"STZ-STEP-M42-M48","price":15.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Starizona-M42-to-M48-Step-Ring-1_69461880-7697-4c87-ab59-00d021ee0cab.jpg?v=1794410542","url":"https:\/\/davidastro.com\/en-us\/products\/starizona-m42-to-m48-step-ring","provider":"David Astro","version":"1.0","type":"link"}