stm

Canon 50mm f/1.8 STM Focus and Sound Comparison with the Old ‘Nifty Fifty’

This week Canon announced its new 50mm f/1.8 STM, a followup to the popular and cheap "Nifty Fifty" 50mm f/1.8 II. Aside from a better build quality and a metal mount, the new lens also features Stepping Motor (STM) technology for
smooth and silent autofocusing.

If you'd like to see how the focusing sound and smoothness compares between the new lens and its predecessor, check out the comparison video above.

Canon Shows Off the Inner Workings of Its Lenses in Cool CES Demos

Unfortunately, what with major changes at the helm and making sure that we hit 2014 running, we weren't able to make it to Vegas for CES this year. And I say unfortunately because, not only does it mean we'll have to wait a minute to get hands on with some of the new releases, but it also meant missing cool demonstrations like the ones you see above.

New Tech Totally Eliminates Zoom and AF Noise from Video Soundtracks on the Fly

DSLRs and Compact System Cameras are becoming increasingly capable video capture devices in addition to being solid still shooters. But when it comes time to focus or zoom using the lens' or camera's built-in motor, you're often left with glaringly obvious noise on your soundtrack.

So far manufacturers have tackled this problem by introducing silent focusing motor lenses, but one group of engineers is taking a firmware-based approach that seems to work just as well (if not better) and might someday soon do away with zoom and AF noise entirely.

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.