Apple’s done some cool new things with the Messages app in iOS 10, including adding a live preview for taking photos right within a conversation. If you’ve used this feature, however, you may have noticed that the photo you capture doesn’t actually save to the iPhone’s Photo Library — it’s only inserted into the current conversation. While this can be desirable in some cases, if you’re taking a photo that you might want to keep around for later, you can actually bring up the full iPhone Camera by swiping from left to right and tapping on the Camera button that will appear.
This also has the advantage of giving you a full-screen camera view, which users of smaller-screened iPhones will certainly appreciate, compared to the much smaller live preview window.