Canon lens, 16-35 is better than 17-40.

The lens adopts 1 glass mold aspheric lens (diameter 55mm) and two ordinary aspheric lenses, as well as super ultra-low dispersion (super UD) lens and optimized lens coating, which has excellent imaging quality and excellent dustproof and moisture-proof performance. The following is the structural diagram of 17-40.

Look at 16-35 again.

The maximum shooting angle is 108, and there are three kinds of aspheric lenses, grinding, compound and ultra-precision die-casting glass, which can effectively correct the image deformation and distortion caused by zooming. It uses two ultra-low dispersion (UD) lenses, which greatly corrects the chromatic aberration of the wide-angle lens and improves the contrast and resolution of the image. It has good dustproof and moisture-proof performance.

Canon's super UD lens can't play all the shots! Let it in! It's a status symbol! Imaging must be invincible!