Apple's iPhone have always packed high quality cameras. But even a great camera can't overcome with the basic limitations of hank shake, selfies that are limited to face shots or group photos where someone is out of the frame.

According to Forbes there was a mysterious camera app on Apple Watch. And most of the users tend to assume that's basically a remote to trigger a photo being taken on their iPhone, which is completely true but it's actually much more useful than that. The Camera app can turn the Apple Watch into a live, remote viewfinder for the iPhone camera as well. 

Users can use their selfie camera on their  iPhone instead of its primary camera for one reason: They can see themselves on the display. The main camera is vastly superior in quality, but it's pointing the wrong direction for a selfie --unless users feel like guessing whether they're actually in the frame or not. 

By using the Apple Watch Camera app, user can make full use of the superior, primary camera. One person can hold the iPhone while the other composes the photo using the Apple Watch display, then triggers the selfie. Even better, user  can prop up the iPhone and fire away, without having to hold onto it at all. That means selfies that are more than just a head-shot. And they are much higher resolution photos.

Everyone wants to take family or group photos at holiday get together. Using the iPhone alone, users have limited options. Trying to squeeze everyone in using the selfie camera is one option. Users could also prop the iPhone up to use the primary camera, try to get everyone in the frame, tell them to hold still, set the timer then scurry over to get in the shot yourself.

If everything goes perfectly, users can get a good holiday group photo. More likely than not, you'll end up repeating this exercise multiple times until user get a shot that's good enough, or everyone loses interest and wanders away.