There is no ârightâ way to whiten teeth naturally with activated charcoal. Koreans put it in their toothpaste, Crunchy Betty swishes with it, and some people simply brush it on straight. Open a capsule of activated charcoal (about 1/8 teaspoon) and pour about half into a cup.
The rear-facing camera on Surface 3, Surface Pro 4, and Surface Book has an autofocus lens that can help improve the sharpness of your photos and videos. The lens automatically focuses on the main subject on the screen, but you can change the focus to a different area before taking a picture or while recording a video.
With the Galaxy S4's Dual Camera mode, you can shoot photos or videos with the back camera while capturing your reaction on the front-facer. To use the feature, switch to the Camera app's Dual Camera mode, line up your shot and tap the shutter button. You can also created animated .gifs. Here's a step-by-step tutorial.ith the Galaxy S4's Dual Camera mode, you can shoot photos or videos with the back camera while capturing your reaction on the front-facer. To use the feature, switch to the Camera app's Dual Camera mode, line up your shot and tap the shutter button. You can also created animated .gifs. Here's a step-by-step tutorial.