How to return to camera when looking at Albums?

I've noticed that in iOS 8 (I think in 7 too), you can't seem to get back to the camera to take another picture, when looking at albums/photos.

For example:

1. Launch camera


2. Tap small photo icon in lower left corner to view latest photos taken


3. Tap All Photos in upper left


4. Now you can't get back to camera to take another photo

The only way to return seems to be to click Home to return to the home screen, then launch the camera app again. Is this so? Is there no simpler way to just get back into the camera mode you were just in?