{"id":65118,"date":"2015-10-19T10:22:24","date_gmt":"2015-10-19T15:22:24","guid":{"rendered":"http:\/\/www.premiumbeat.com\/blog\/?p=65118"},"modified":"2015-10-19T10:40:25","modified_gmt":"2015-10-19T15:40:25","slug":"how-to-achieve-perfect-slow-motion-results-in-post","status":"publish","type":"post","link":"https:\/\/www.premiumbeat.com\/blog\/how-to-achieve-perfect-slow-motion-results-in-post\/","title":{"rendered":"How to Achieve Perfect Slow-Motion Results in Post"},"content":{"rendered":"

Overcranking in camera will give you the option to achieve beautiful slow-motion work in post. But if you don\u2019t follow the right formula in the editing room, your results will be less than ideal.<\/h2>\n

The 180 degree shutter rule states that your shutter speed needs to be double that of your frame rate.<\/strong> So if you\u2019re shooting at 24p, you\u2019ll want your shutter speed to be set to 1\/48. If your shutter speed is any higher or any lower, you\u2019ll get unwanted results \u2014 either a sharp \u201cfast-frame effect\u201d or a slow-motion blur.<\/p>\n

If you\u2019ve been shooting for a while, then this may be second nature to you. But in the editing room, things can often get confusing for filmmakers\u2026<\/p>\n

\"How<\/p>\n

Let\u2019s assume you\u2019ve captured a 48fps clip at a 1\/96 shutter speed.<\/strong> In post, if you were to slow that clip down to 50%, you\u2019d end up with a perfect slow-motion effect since it would effectively play back at 24fps with a 1\/48 shutter. But if you didn\u2019t slow that clip down at all, and just dropped it into a 24fps timeline, you\u2019d essentially be working with a 24p equivalent shot that has a 1\/96 shutter speed instead of 1\/48. This would give your footage that fast-frame look I described earlier and clearly wouldn\u2019t adhere to the 180 degree shutter rule.<\/p>\n

The point of all this, is that it\u2019s very important to know the exact percentage you need to slow your footage down in post<\/strong>\u00a0in order to maintain that 180 degree shutter. The 48fps example is an easy one, since it\u2019s exactly double that of 24fps.<\/p>\n

\"How<\/p>\n

Here are some common overcranked frame rates<\/strong> with the respective percentages they should be slowed down to in post (in a 24p project\/timeline):<\/p>\n