The iPhone iSight camera has received several remarkable improvements over the year, headlined by its ability to shoot 4K video. Another big feature is its ability to shoot slow motion videos in 1080p. Older iPhones, like the iPhone 6, were only capable of shooting “Slo-mo” videos in 720p resolution. With new iPhones, you can now enjoy slow motion videos in full HD glory.

Recording Slo-mo videos in 1080p on iPhone

Like the 4K video recording option, you’ll need to enable 1080p Slo-mo via the Photos & Camera settings.

Step 1: Open the Settings app.

Step 2: Tap Photos & Camera.

Step 3: Under the Camera heading, tap Record Slo-mo.

Step 4: Tap 1080p HD at 120 fps.

Enable 1080p HD Slow-mo 120fps

There are two downsides to recording Slo-mo videos in 1080p. First, videos shot at 1080p take up more space than their 720p counterparts. It’s not a huge difference, though:

1080p Slo-mo = 375 MB a minute

720p Slo-mo = 300 MB a minute

The second downside is the reduction in frame rate. 720p Slo-mo videos feature 240 fps for a more pronounced slow motion effect. 1080p slow motion videos are limited to 120 fps.

Obviously, there are trade offs being made with either mode you choose. My advice is to test both of them out, and stick to the one that seems to work best for your circumstances.