How to Use Focus & Exposure Lock with the iPhone Camera
You probably know that tapping once on the screen within the Camera app will cause the iPhone to automatically focus and adjust exposure to that region in the viewfinder, but if you’re trying to take a picture with challenging lighting or depth conditions the auto adjustments are not always ideal.
Instead, use the excellent focus and exposure lock feature to get the exact lighting and focus you want out of a picture. The feature is quite literal, as you can point to a specific lighting or depth, lock it, then reorient the camera to the desired picture while maintaining the previously locked lighting conditions. Here’s how to use this awesome feature:
Locking Exposure & Focus in Camera for iPhone
- Open the Camera app as usual and aim it at whatever you want to take a picture of
- Tap and hold on the region of the screen where you want focus and exposure to be locked onto
- When “AE/EF Lock” appears on the bottom of the screen, the focus and lighting lock is set
Note you must tap-and-hold until the AE/EF Lock text appears, otherwise the exposure and focus lock won’t be set and it will adjust as you pan around.
You can then take a picture right away, but once the lock is set you are free to move the camera around and the lighting and depth settings will stay the same. Tap elsewhere on the screen again at any time to release the AE/EF lock.
The end result of how pictures turn out can be dramatic, especially in situations where lighting matters. In the example picture up top, the left side shot is how the iPhone wanted to automatically set the lighting, and the right side shows the result of locking onto the lightbulb.
Auto-focus and auto-exposure can be stacked with zoom on the iPhone too, and it works on the iPad and iPod touch as well. This is one of those great ticks that can make average iPhone photos look like they were taken by a pros, and unless the iPhone camera gets some manual controls for exposure and aperture this is the way to go.