Ef50mm F/1.2l Usm
How the physical quantity of glass in a lens effect of the highest quality of the image?

So using the example of 50 mm f / 1.2 L of Canon and the Canon 50 mm f / 1.8, (72 mm at the end instead of 52 mm) in all areas that extra glass will improve the quality of the image. http://www.canon.com.au/en-au/For-You/Camera-Lenses/Lenses/EF50mm-f12L-USM-Lens -You/Camera-Lenses/Lenses/EF50mm-f18-II-Lens http://www.canon.com.au/en-au/For

In fact, 50mm f / 1.2 he is not so great in the quality department Image: http://www.photozone.de/canon_eos_ff/472-canon_50_12_5d?start=2 extra glass (diameter, without talking about the number of elements) is only necessary to make the difference between f / 1.8 f / 1.2 y.

Ef50mm F/1.2l Usm

Canon EF 50mm f/1.2 L USM Hands-on Review