# How to set the 180-degree shutter rule for video?

> The 180-degree shutter rule is simple: set your shutter speed to double your frame rate. At 24fps → 1/50s. At 30fps → 1/60s.

URL: https://camerashop.com.eg/how-to-set-180-degree-shutter-rule/
Language: en

## The 180-degree shutter rule is simple: set your shutter speed to **double your frame rate**. At 24fps → 1/50s. At 30fps → 1/60s. At 60fps → 1/120s. This produces the natural motion blur that defines professional-looking video.

## **Setting it up on your camera**

**Step 1:** Switch to video/movie mode.

**Step 2:** Set exposure mode to **Manual (M)**. You need to lock the shutter speed — auto modes will change it.

**Step 3:** Set your frame rate. For most content, choose 24fps or 30fps.

**Step 4:** Set shutter speed to double the frame rate. 24fps → 1/50s. 30fps → 1/60s. If your camera shows shutter angle instead, set it to 180°.

**Step 5:** Set aperture for your desired depth of field.

**Step 6:** Adjust ISO until exposure looks correct. If you are outdoors and it is too bright, attach an ND filter rather than increasing shutter speed.

## **Why you need an ND filter outdoors**

On a sunny day with the shutter locked at 1/50s and aperture at f/2.8, your image will be massively overexposed — even at ISO 100 there is too much light.

An **ND filter** reduces the light entering the lens by 2-10 stops without affecting color. This lets you maintain 1/50s and f/2.8 in bright sunlight.

A **variable ND** (ND2 to ND32 adjustable) is the most convenient option — one filter that covers any lighting condition by rotating the ring.

Without an ND filter, your only option is closing the aperture to f/11 or f/16 — which destroys the shallow depth of field that makes video look cinematic.

## **ND filters at Camera Shop Egypt**

## **Quick reference chart**

**24fps → 1/48s or 1/50s** — cinema standard, filmic look.

**25fps → 1/50s** — PAL standard for broadcast in Egypt and Europe.

**30fps → 1/60s** — smooth online content, YouTube.

**50fps → 1/100s** — PAL slow motion (2x at 25fps playback).

**60fps → 1/120s** — NTSC slow motion (2.5x at 24fps playback).

**120fps → 1/250s** — dramatic slow motion (5x at 24fps playback).

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Program these shutter speeds into your camera’s custom modes (C1, C2, C3) for instant recall. C1 = 24fps/1/50s for cinematic. C2 = 60fps/1/120s for slow motion. C3 = your photo settings. One dial click to switch between them.

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