Testing the Sony a7R III’s Eye AF Using Canon Lenses

The <a href="http://ift.tt/2kYO8yW" data-wpel-link="internal">Sony A7R III</a> boasts some impressive and improved autofocus features. The Eye Autofocus mode is great for locking onto your target, but <a href="http://apicdn.viglink.com/api/click?format=go&key=dae5b94bb21a32cc7c141a041d18f05b&loc=https%3A%2F%2Fpetapixel.com%2Ffeed%2F&out=https%3A%2F%2Fwww.youtube.com%2Fchannel%2FUCx-anfONj02GUVohXYAQUcw" data-wpel-link="external" target="_blank" rel="follow external noopener noreferrer">The Brotographer</a> found that it didn’t work perfectly in the previous a7R II with adapted lenses. In this 12-minute video, however, he reveals major improvements for adapted Canon glass on the latest Sony camera. The test was carried out on a number of lenses mounted to a Metabones Mark IV adapter: the Canon 85mm f/1.2L II, Canon 35mm f/1.4L II, Canon 70-200mm f/2.8L IS II, and Tamron 90mm f/2.8 Macro. In what will be music to the ears of Canon/Sony crossover shooters, the Eye Autofocus worked for each of the lenses tested. <iframe class="giphy-embed" src="http://ift.tt/2Dz4xCC" width="800" height="450" frameborder="0" allowfullscreen="allowfullscreen">

When using the Tamron 90mm macro lens, he asks his model to step backward. In this test, Eye Autofocus is still working at 30-40 feet (9-12 meters) from the camera while in a poorly lit room – that’s impressive.

The Canon 70-200mm lens seemed to have trouble using Eye AF at 200mm when back-focused but not so when front-focused. Regular AF also works well.

He also found that the Canon 16-35mm f/4 lens and Tamron 150-600mm G2 lens benefit from Eye AF, but these lenses aren’t featured in the video.

(via The Brotographer via FStoppers)