usm

Rumor: Canon May Replace the 50mm f/1.4 with a High-End 50mm f/1.8

Canon's 50mm lens lineup is getting crowded... at least that's what Canon seems to think. According to a fresh rumor, the company has plans to replace the current 50mm f/1.4 USM. But it won't be replaced by another f/1.4. Instead, Canon might do away with the lens altogether and release a high-end 50mm f/1.8 IS USM instead.

Video: Comparing Canon’s USM and STM Lenses Using the 70D’s Dual Pixel AF

As Canon has begun focusing more adamantly on making its DSLRs capable video capture machines, the company has had to adjust its glass to match. The new Dual Pixel AF on the 70D is a great improvement (check out these videos if you doubt that) but if you're planning on shooting video using the autofocus, you'll probably get to the point where you have to choose between buying a USM lens and an STM lens.

When that time comes, the video above by YouTube user marconilanna should make that choice a little easier by showing you the differences -- in both noise and speed -- between one of Canon's STM lenses and a few older USMs.