The TRUTH about Lens Design

The Art of Photography.

Lensdays – a new series… in this video we begin with a little baseline on the truth about lens design. Like everything else in photography, optic design is about give and take. To make a lens good at one thing, you have to make it less good at another. What is the difference between a Canon EF 85mm f/1.2L USM II and the much less expensive Canon EF 85mm f/1.8 USM?
How well do you understand the characteristics of the lenses you own? Why does this matter? Does this have an effect of the art you’re trying to create?