Availability and Pricing. The Canon RF15-35mm F2.8 L IS USM and RF24-70mm F2.8 L IS USM lenses are both scheduled to be available in late September 2019 for an estimated retail price of $2,299.00 The Canon RF 28-70mm F2 L USM Lens is a large, heavy and expensive lens that is also awesome. Garnering a world's first on its credit list, this lens brings the f/2 aperture to the extremely useful standard zoom lens. With the RF 28-70mm F2 L Lens in your hand, it is like having a large kit of prime lenses always mounted on the camera. A Fujifilm photographer’s view of the Canon RF 24-70mm f/2.8L IS. A review of the Canon RF 24-70mm f/2.8L IS with sample images. Canon RF 24-70mm f/2.8L IS vs. Fujifilm XF 16-55mm f/2.8 R WR. Handling, build quality and specs. VQGnu1.