When the camera zooms in and out madly, people roll down from shields and spears and collide with swords, which makes the iconic action sequence in the film 300 so iconic. Unfortunately, achieving this effect is not easy. Three cameras are rolling, each with different lenses (100mm, 50mm and 21mm) to capture different views of the same scene. In post production, because the shots are synchronized, you can dramatically switch between the three cameras. The staff of [corridor staff] wanted to reproduce this effect, but instead of creating a customized bracket that can accommodate three expensive cameras, they printed a customized bracket that can accommodate three expensive smartphones in 3D.
Although most mobile phones have three cameras on the back, most mobile phones cannot shoot in SLO Mo from all cameras at the same time. So they need a platform to install three mobile phones. The first design is very simple. It only needs a bracket to hold the mobile phone. Although it is very good and strong, it is not easy to put the mobile phone in or out, and it is difficult to press the recording key. There is a handy small magnetic ring on the back of the iPhone. They have a bracket. After several iterations on the design and some printer problems, the effect is very good. Since each camera has an optical image stabilization function, the lens is easy to lose alignment, thus damaging the shooting effect. However, they somewhat masked this effect in their posts. With a working prototype, the only thing left is to split a set of Pi’s in slow motion with a brisk soundtrack.
We like to see exciting camera settings and iterations to find something that works. This dual camera setup has a very different target and tries to tilt it to the parallax effect instead of hiding it. Play the video after the break.