{"product_id":"porst-2x-asp-auto-converter-m42","title":"Porst 2x ASP Auto Converter - Accessory","description":"\u003cp\u003e2x teleconverter from Porst for all M42 screw mount SLRs. Allows you to double the focal length at the cost of some lens speed. Has a mechanism to stop down the aperture if the body is able to. Metal body available in black.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eSize: 54 x 26mm\u003c\/li\u003e\n\u003cli\u003eWeight: 107g\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Porst","offers":[{"title":"Default Title","offer_id":47257221464397,"sku":"s1o12o","price":0.0,"currency_code":"CNY","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0521\/9496\/7750\/products\/27-04-23-15027.jpg?v=1694688673","url":"https:\/\/kamerastore.com\/en-int\/products\/porst-2x-asp-auto-converter-m42","provider":"Kamerastore","version":"1.0","type":"link"}