Sigma Releases New Instant Savings Promotion, Numerous DSLR Lenses Included; Apple Airtag 4-Pack — Only $78.99 (Reg. $99.00) Just Posted: Canon RF-S 10-18mm F4.5-6.3 IS STM Lens Review The Tamron 28-75mm f/2.8 XR Di Lens is a relatively small normal zoom lens that delivers good image quality and a wide fixed f/2.8 aperture for a low cost.. Pictured above from left to right are the Sigma 28-70mm f/2.8 EX DG Lens, Tamron SP 28-75mm F/2.8 XR Di Lens, Canon EF 28-135mm f/3.5-5.6 IS USM Lens and Canon EF 24-70mm f/2.8 L USM Lens. More on this later. Given its importance, Canon was quick to release one for R-mount - namely the Canon RF 24-70mm f/2.8 USM L IS, priced at around 2500EUR/2300USD. That's almost a 50% price hike compared to Canon's DSLR variant. Of course, these are very different designs and the RF lens adds the all-important image stabilizer on top. Gary Wolstenholme reviews the Canon EF 70-300mm f/4-5.6L IS USM lens. Gary Wolstenholme reviews the Canon EF 70-300mm f/4-5.6L IS USM lens. Login Join for free. Used Canon EF 24-70mm f/2.8 L As anyone who's shot with one will attest (see the user reviews below), the Canon 24-70mm f/2.8 lens is just an exceptional optic. This was clearly evident in our DxO tests as well. But I would say this lens' color is neutral, like the Canon ef 50mm f1.8. I tested this lens against my ef 50mm f1.8 and found the 50mm f1.8 to be sharper wide open, but still the 28mm was acceptable. Olympus Body Cap Lens 15mm F8.0 review (Jul 11, 2013) Canon EF 200-400mm f/4L IS USM Extender 1.4x review (Jun 25, 2013) Canon EF 40mm f/2.8 STM review (Jun 12, 2013) Canon EF-M 11-22mm f/4-5.6 IS STM preview (Jun 6, 2013) Tamron SP 24-70mm F2.8 Di VC USD review (May 20, 2013) Fujifilm XF 14mm F2.8 R review (Apr 2, 2013) Reviews. Smartphones; Camera Sensors; Canon EF 24-70mm f/2.8L USM Lens Metric Scores : Sharpness . 17 P-Mpix. The Canon EF 28-70mm f/2.8 L USM is a professional grade fast wide angle zoom lens for Canon EOS Cameras. Introduced in 1993 as a major upgrade from the previous EF 28-80mm 2.8-4 L, the 28-70mm f/2.8 L USM is a ground breaking design that has lived up to and added to the reputation enjoyed by Canon L series lenses. CYT5.