Canon RF 24-105mm F2.8 L IS USM ZVersatile Large Aperture Standard Zoom The RF24 105mm f 2. 8 L IS USM Z is the first RF lens to feature iris control, giving filmmakers precise control over their creative expression. With a small f stop of f 2. 8 and 11 blade circular aperture, this lens allows you to achieve that coveted cinematic out of focus effect. But that's not all the lens also boasts up to 8 stops of image stabilisation, making handheld shots as steady as if they were taken