{"product_id":"canon-ef-s-17-55mm-f2-8-is-usm","title":"CANON EF-S 17-55MM F2.8 IS USM   Follow Focus Gear","description":"\u003cp\u003eThe follow focus gear ring for the Canon EF-S 17-55mm f\/2.8 IS USM fits the fast standard zoom of the EF-S line. A constant f\/2.8 with stabilization makes it a popular video zoom on APS-C cameras, and gears on focus and zoom let you control both separately.\u003c\/p\u003e\n\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eDoes the aperture stay constant when zooming?\u003c\/strong\u003e\u003cbr\u003eYes, f\/2.8 across the range, so exposure stays the same during zooms.\u003c\/p\u003e","brand":"Better Focus","offers":[{"title":"Focus Gear","offer_id":42953592799445,"sku":null,"price":24.99,"currency_code":"EUR","in_stock":true},{"title":"Zoom Gear","offer_id":66192487973213,"sku":null,"price":24.99,"currency_code":"EUR","in_stock":true},{"title":"Focus Gear \u0026 Zoom Gear","offer_id":42953592832213,"sku":null,"price":39.99,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0639\/2099\/6565\/products\/Follow-Focus-Gear-for-CANON-EF-S-17-55MM-F2.8-IS-USM_41b68c57-0169-4ba9-bede-8ca96c44eab3.jpg?v=1650648436","url":"https:\/\/better-focus.com\/fr\/products\/canon-ef-s-17-55mm-f2-8-is-usm","provider":"Better Focus","version":"1.0","type":"link"}