Dual Pixel CMOS AF Technology

for Enhanced Autofocusing Performance

The introduction of Dual Pixel CMOS AF technology enhances autofocus (AF) performance on the EOS C100 for smoother and accurate autofocusing results.

A Canon service center installed upgrade is now available for the EOS C100 that offers an autofocus mode to achieve sharp focus and smooth focus transitions. The upgrade enables a new Continuous AF Function for all Canon EF autofocus lenses, using Dual Pixel CMOS AF technology. A new AF Lock setting also gives you the freedom to change image framing while maintaining a chosen focus point. These precise focusing capabilities eliminate the chances of out-of-focus video while rendering a smoother focus transitions, providing greater assistance to users working with smaller crews.

The upgraded EOS C100 cameras are perfect for professionals in the field of electronic newsgathering, sports productions, documentary film-making, wedding videography and similar special events, nature and wildlife programs, and many others.

What is Dual Pixel CMOS AF Technology?

The EOS C100 camera with Dual Pixel CMOS AF upgrade optimizes performance of its CMOS sensor, which holds an array of pixels, each featuring two separate photodiodes. By continuously comparing their outputs during AF mode, phase-difference autofocus helps ensure non-blurred images and smooth focus transitions even when the subject and/or the camera are moving. The new feature places high priority on maintaining sharp focus while providing a natural, smooth autofocus movement with select Canon EF lenses – including newer-generation STM lenses – which offer even smoother and quieter operation.

With the upgrade, the Continuous AF area on the EOS C100 represents 20% vertically and 25% horizontally of the image center – resulting in a wide AF zone. The AF Lock function complements the Continuous AF mode by allowing a selected focus point to be set and maintained, even when framing is changed.

How does dual pixel CMOS AF benefit video-shooting?

Fast, Smooth AF During Video Capture

An upgraded EOS C100’s set-up menu will show two AF mode options - One-Shot AF and Continuous AF. The AF Lock function can be toggled on and off easily by setting the function to one of the camera’s assignable buttons. During video capture, simply engage the AF Lock to prevent Continuous AF from changing focus, and pressing the button again to re-enable it.

Images are simulated.

Continuous AF works in the center of the frame. It measures 25% horizontally and 20% vertically on the image plane.

The AF focus frame changes from white to grey.

Focus is maintained even when framing is adjusted.

Dual Pixel CMOS AF technology delivers smooth and consistent AF, so that focus transitions appear natural and subjects remain in focus even as they move. Dual Pixel CMOS AF also works in tandem with the Contrast AF to determine which direction to drive the lens initially and helps to reduce focus hunting significantly.

Faster One-Shot AF Mode

Contrast AF and phase-difference detection on the Dual Pixel CMOS AF work together to ensure that the AF system initially drives the lens in the correct direction to achieve faster focus. The upgraded EOS C100 will now obtain precise focus faster than an unmodified camera by nearly twice the speed, and with a more natural look without focus overshooting. Because the current One-Shot AF mode uses only Contrast AF, focusing may sometimes be jerky with overshoot errors.

Compatibility with EF Lenses

Dual Pixel CMOS AF emphasizes on image quality, and its superior AF speed and precision enables smooth and hunt-free focusing with Canon EF lenses, excluding non-AF lenses. This technology provides continuous AF with any EF lens, spanning the EF and EF-S range, while One-Shot AF mode is supported by 104 EF lenses listed below:

As of November 7th, 2013.

Canon sales companies are able to perform this feature upgrade for a service fee of USD500 (before local sales tax). The upgrade service will be available for the EOS C100 from 25th February 2014. The intricate nature of the Dual Pixel CMOS AF function requires the camera to be brought into an authorized Canon Service Centre for the updated firmware to be installed and the camera properly calibrated. Shipping and handling charges may apply.