Compare Canon EF 24-70mm f 4L IS USM Lens vs Canon EF 24-105mm f 4L IS II USM Lens vs Canon EF 70-300mm f 4-5.6L IS USM Lens Press ? ? Enter ? for Accessibility for blind people who use screen readers Canon RF 24-70mm f/2.8L IS USM: Build and handling . The Canon RF 24-70mm f/2.8L IS USM is longer than its DSLR counterpart, the Canon EF 24-70mm f/2.8L II USM, which measures 113mm. Still, the two lenses are comparable in size – and the RF iteration retains the 82mm diameter of its predecessor, meaning that you can port over your existing Compare Canon EF 24-105mm f 4L IS II USM Lens vs Canon EF 24-70mm f 4L IS USM Lens vs Canon EF 70-200mm f 4L IS USM Lens Press ? ? Enter ? for Accessibility for blind people who use screen readers EF 24-105mm f/4L IS II USM @24mm f/4.5 1/2000 ISO6400. 光圈小了一级，完全没有问题。一般拳击赛场光线充足，不会像上文所说需要很高的感光度。另外为了对焦更容易，即使是2.8镜头我也要缩到4或者4.5换取更厚的景深。拳击场通常是暗背景，所以不需要背景虚化。 有园形光圈叶片. Canon EF 24-70mm F/4L IS USM. 类似於光圈叶片的数量，园形刀片影响光线通至感光器上的方式。. 园形刀片，往往只有更昂贵的镜头用上，改善失焦区域的外观。. 这可以让您的照片看起来更好、更柔和的背景虚化。. 光圈叶片. 9. 光圈控制有多少光线 33 facts in comparison Canon EF 24-105mm F4L II USM vs Canon EF 24-70mm F/4L IS USM Canon EF 24-105mm F4L II USM Canon EF 24-70mm F/4L IS USM Why is Canon EF 24-105mm F4L II USM better than Canon EF 24-70mm F/4L IS USM? 6P-MPix higher sharpness result? 14P-MPix vs 8P-MPix 35mm longer maximum focal length? 105mm vs 70mm Lens hood is reversible? So, I've been looking at the following: - EF-S 17-55mm f/2.8 IS - EF 24-70mm f/2.8 L . I'd envisage bringing both the 10-22mm and whichever new lens I buy on my trips, so the longer range of the 24-70mm and the fact that it doesn't overlap makes it seem ideal, but the IS on the 17-55mm is appealing. I mostly shoot scenery, from narrow old town In the Canon EF 70-200mm f/4L IS II vs. 70-200mm f/2.8L IS III USM Lens specifications comparison, we find the f/4L IS II with a shorter minimum focus distance (39.37 vs. 47.24" / 1000mm vs. 1200mm) for a higher maximum magnification (0.27x vs. 0.21x). The f/4L IS II has a higher-rated image stabilization system (5 stops vs. 3.5) and it also Um9wk.