Now we have Japan Patent JP 2023 – 104137A that gives us an optical formula for such an RF mount lens in the form of an RF 24-300mm f/2.8-5.6L IS USM. This would be a lens that would garner a fair bit of attention if it comes to be. This patent shows optical formulas that begin at f/2.8 and at f/4. The length of the lens design is quite close The Canon 24 mm f/2.8 STM for Canon EF-S SLR cameras is a very compact lens with good, but not spectacular, performance. The STM motor is somewhat quieter than the USM motor of other EOS lenses, but it is not noise-free. The price is attractive, and the 24 mm focal point on a camera with an APS-C sensor is more universally applicable than a 50
EF400mm f/2.8L IS II USM: Focal Length/Aperture: 300mm f/2.8: Lens Construction: 12 groups, 16 elements: Minimum Aperture: f/32: Angle of View: Diagonal: 8° 15'
1242B002. $799.99 $879.99. In Stock. $80 Instant Savings. FREE Standard Shipping and Handling. Focal Length: 17-55mm. Maximum Aperture: 1:2.8. Lens Construction: 19 elements in 12 groups. AF with full-time manual focus adjustment.
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Check the latest price of the Canon EF 20mm f/2.8 USM lens here. Test by Ian Andrews www.wildaboutkent.co Used Canon EF 24-70mm f/2.8 L II USM. Heavily Used £559. Used Canon EF 75-300mm f/4-5 For landscape, I like my Canon EF-S 10-22mm f/3.5-4.5 USM is a little faster than the Canon EF-S 10-18 mm f/4,5-5,6 IS STM and it seems to be cheaper now than a few years ago when I bought it, but still more expensive. I wonder if anyone has made a comparison test of those two lens. OWRODE. 38 231 129 459 278 36 123 109 361

canon ef 24 2.8 is usm