How to set up a face detection photo booth

What you'll learn

1.How to set up a Peekabooth
2.How to use face detection to trigger your camera
3.How to encourage multiple people to use your Peekabooth

Want to get groups of people interacting with your automatic photo booth? Why not use face  detection at your next event to get people taking their own photos!

What you'll need

  • Camera

  • Sturdy tripod

  • Lighting setup

  • Background

  • An iOS smart device running Triggertrap Mobile app

  • A way of attaching your device to your tripod

  • Triggertrap Mobile Kit for your camera (Buy Here)

  • Gaffer tape

A bit of theory

The fundamentals behind a photo booth are rather simple: you need a camera on a tripod which can be set to take photos unattended, some sort of lighting and a backdrop.

You need to be sure that the camera settings, focus and position are going to remain the same so each shot looks very similar. If the camera is on auto exposure and autofocus, the end results are going to vary tremendously, resulting in lots of unusable shots. If you use manual focus and manual exposure, you can be sure that each shot is going to be in focus and consistently well exposed.

Depth of field really comes into play in situations like this. There’s no point setting your photo booth camera to snap away at f/1.8 as chances are people won’t be standing exactly where you expect them to. Also, if there’s more than one person in the frame they certainly won’t both be in focus. Using a small aperture such as f/8 or f/11 will give a pretty large depth of field and will therefore help to ensure everyone is nice and sharp.

A clean background is also a crucial part of any photo booth. A busy, messy background can be really distracting and it simply won’t look good. You don’t need to use anything fancy: a simple sheet strung across a couple of stands can work a treat, as long as it is fairly plain. It’s even better if you can get people standing slightly in front of the backdrop. This way the backdrop should blur slightly (even at f/8 or f/11).

Some sort of a lighting setup is also extremely helpful. This can be as simple as a flash attached to your camera or as advanced as you like. The lighting allows you to keep each frame fairly consistent and also ensures you can use a smaller aperture to get your larger depth of field.

The key to a “Peekabooth” is the way in which you trigger the camera. A traditional photobooth will use a button or a remote, while a Peekabooth uses facial detection to trigger when it sees a specified number of faces! This is particularly useful if you really want to encourage groups of people into the booth as you can set it so that the camera only fires when there is more than one person stood infront of it.

The Peekabooth requires the use of Triggertrap Mobile. The app has a mode called Peekaboo (hence the name Peekabooth) which uses a clever little bit of face detection through the camera built into the smart device.

The finished set up

Capturing the photos

Example photos

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