Due to the mirrors in a DSLR that must move up and down when shooting, slight variation in mirror positioning can change how light hits the sensor, which then changes autofocus accuracy since DSLR cameras have AF chips separate from the image sensor. If you get repeated results showing that your lens performs worse than others, it's worth having it looked at.Īutofocus calibration is especially important when working with DSLR cameras. This lets you see how your gear compares with other users. From here, you can view real-world data points from other FoCal users with more than 14,000 camera and lens combinations. The FoCal Mobile app lets you sync your cameras to the same time as your phone or tablet.Īs mentioned, the paid version of FoCal Mobile includes an in-depth comparison database. If you use multiple cameras, you know how frustrating it can be to keep them synced.
As for the actual autofocus testing, you must use the printable FoCal Target. Results are shown with scores ranging from 0 (poor) to 100 (excellent), providing the user an instant, easy-to-understand performance metric. It takes about two minutes and you'll learn how well your camera and the specific attached lens work together. Once connected, Verify Setup in the app checks your environment, ensuring everything is set up for proper testing. Users connect their camera to their mobile device using an Apple Lightning to USB 3 camera adapter, a USB-C connector, or Reikan's Wireless Camera Module.
The compatible cameras include Canon DSLR and mirrorless cameras and Nikon DSLR and mirrorless cameras.įollowing an in-app purchase, users can perform full AF system calibration, compare their camera against the FoCal database, view results history, share results to FoCal Desktop and perform time sync. On the free version, you can perform an AF system check and sync camera time with all FoCal-supported cameras. It doesn't offer all the same features and instead emphasizes autofocus system checking and calibration. The new FoCal Mobile app is a complement to the desktop app, rather than a full replacement. The desktop app now offers much more than autofocus calibration, with features such as testing stabilization, autofocus consistency, aperture sharpness, dust spots and more. Since then, FoCal has added support for nearly 60 cameras, including the latest Nikon Z mirrorless cameras, and runs on macOS alongside Windows. At that time, the app was available only on Windows. The original FoCal desktop app launched a decade ago, providing fully automatic autofocus calibration for Canon EOS 5D Mark II and Canon EOS 7D DSLR cameras.
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