{"product_id":"borg-4511-m42extension-barrel-ssb","title":"BORG 4511 M42EXTENSION Barrel SSB","description":"\u003ch2\u003eBORG 4511 M42EXTENSION Barrel SSB | Add extension to an M42 setup\u003c\/h2\u003e\n\u003cp\u003eWhen a lens setup calls for an extension barrel, this is the part to consider: the BORG 4511 M42EXTENSION Barrel SSB. Its name identifies it as an extension barrel with an M42 designation, in BORG’s 4511 line. That makes it relevant to photographers and other image-makers assembling a setup where those exact identifiers matter. The practical aim is to add extension within that arrangement, rather than to choose a standalone lens or a complete imaging system. I’d approach it as a specific component for a planned build: start with the part name your setup requires, then see whether this is the matching barrel. The product sits in the Standard lens category at Renz. Its title gives a useful starting point for identifying it, but doesn’t describe a particular lens, camera, or intended subject. Keep the decision tied to the wording of your setup, rather than assuming the name alone covers every detail.\u003c\/p\u003e\n\u003cdiv class=\"specialist-note\"\u003e\n\u003ch3\u003eSpecialist Note\u003c\/h3\u003e\n\u003cp\u003eThe awkward part of building around extension is finding the exact component name your setup calls for; this barrel gives you a clear one to work from. “M42EXTENSION” is the key wording to match against your parts list, while “BORG 4511” identifies the item itself. I’d consider it for an assembly that specifically calls for an M42 extension barrel, and use that designation as the starting point when organising the parts for the build. The honest limit is that the title doesn’t tell us a length or a particular application, so I wouldn’t infer either from “SSB.” If you’re choosing a component, keep the full product name to hand.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eBrand: BORG\u003c\/li\u003e\n\u003cli\u003eProduct name: 4511 M42EXTENSION Barrel SSB\u003c\/li\u003e\n\u003cli\u003eCategory: Lenses \u0026gt; Standard\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"BORG","offers":[{"title":"Default Title","offer_id":57563626307924,"sku":"BG-4511","price":28.62,"currency_code":"EUR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0780\/2493\/3716\/files\/BG-4511_01.jpg?v=1791804876","url":"https:\/\/www.htf-store.com\/zh\/products\/borg-4511-m42extension-barrel-ssb","provider":"Hard to Find Camera Store","version":"1.0","type":"link"}