What fps is slow motion? Want to slow time for drama or capture tiny details in action?

This short guide explains how fps works, why capture vs playback matters, and which rates give subtle or dramatic slow motion. You’ll get simple ranges, easy math, and clear examples.

We also cover shutter speed, lighting tips, and a quick pre-shoot checklist to avoid choppy footage. Visuals and a one-line cheat sheet will make choices fast on set or on your phone.

Read on to find exact fps numbers, quick formulas, and pro tricks you can use right away. By the end you’ll know what fps to pick and how to shoot smooth slow motion confidently.

Understanding frame rates for slow motion

Frames per second, or fps, is simply how many still images your camera records each second. More frames mean you have more pieces of motion to play with later.

Slow motion happens when you record at a high fps and then play back at a lower, normal fps. The extra frames get stretched over time, so motion appears slower and smoother.

Common playback rates are 24 fps for cinema, 25 for PAL regions, 29.97 or 30 for web and TV, and 50 or 60 for live sports or high-refresh video. Some screens and phones also display 120 or 240 fps content cleanly.

Motion blur depends on how long each frame is exposed, not just on fps. Higher capture fps shortens exposure per frame, so blur shrinks unless you adjust shutter speed to compensate, which we will cover below.

What frame rate to use for slow motion

Slow motion isn’t a single fps—it’s any capture frame rate higher than your playback rate. If you’re asking what fps is slow motion, think of it this way: useful results start around 48–60 fps, while 120 fps and above give more dramatic slow-down.

For a subtle, cinematic half-speed look, capture 48 fps for a 24p timeline or 60 fps for a 30p timeline. For a noticeable 3–5× slow, capture 60–120 fps; for fast sports or action at 5–10×, aim for 120–240 fps; for extreme micro events like splashes or bullet impacts, you’ll need 1,000+ fps on specialized high‑speed cameras.

Match your capture to your delivery format to make life easy. For 24p film delivery, choose multiples of 24 like 48, 96, or 120 (120/24 equals a clean 5×). For social or web at 30p, 60 or 120 are safe bets, while 25/50 regions benefit from 50, 100, or 150 to avoid messy conversions.

Here are simple mappings that work well in real projects. Shoot 48 and play at 24 for a classic 2×; shoot 60 to 24 for 2.5×; shoot 120 to 24 for 5×; shoot 240 to 30 for 8×, which is silky for sports replays and water shots.

Every camera handles high-fps modes differently, so test before a big shoot. Phones and action cams may crop the sensor, lower bit rate, or lock exposure and focus; a quick read on slow-motion frame rate choices can help you pick a safe setting for your platform and subject.

Also consider subject speed and style. Walking or dance often looks great at 48 or 60 fps, while hair, water, glass, and debris shine at 120–240 fps because the finer details need denser sampling. A side-by-side video of the same move at 24 vs 120 makes this clear and is worth creating for your team.

How to calculate slow motion speed from frame rates

Use this simple formula to plan shots: slowdown factor = recorded_fps ÷ playback_fps. It lets you decide exactly how much stretch you’ll get and quickly answers what fps is slow motion for your project’s timeline.

Record 120 fps and play at 24 fps: 120 ÷ 24 = 5× slower, so 10 seconds on set becomes 50 seconds on screen. Record 60 and play at 24: 60 ÷ 24 = 2.5×, so 8 seconds becomes 20 seconds of runtime.

Record 240 and play at 30: 240 ÷ 30 = 8×, which turns a 2‑second splash into 16 seconds of detail. Record 48 and play at 24: 48 ÷ 24 = 2×, a gentle slow that still feels cinematic.

To target a specific effect, multiply your delivery fps by the desired slow factor to get your capture fps, then choose the nearest standard rate. Integer multiples (like 120 to 24) conform cleanly because frames divide evenly, while fractional pairs (like 60 to 24) are fine but can show artifacts if you stretch further with interpolation; use optical flow carefully and prefer native conforming when possible.

How to set shutter speed for slow motion shooting

Start with the 180° shutter rule, which keeps motion blur looking natural. In simple terms, set your shutter near 1 divided by twice the capture fps.

At 24 fps, use around 1/48 second (most cameras set 1/50); at 120 fps, use 1/240; at 240 fps, use 1/480. This baseline protects the smooth, cinematic feel viewers expect.

You can push shutter speed faster to freeze particles, droplets, or debris for a crisp, snappy look. Or drag it slower to add streaky blur that hides small judders and adds mood to city lights or dance.

High fps gives each frame less light, so exposure gets tight quickly. Open the aperture, raise ISO within reason, or add stronger lighting to avoid noisy shadows and maintain color fidelity.

Use ND filters only when you want shallow depth of field in bright scenes; otherwise adding light preserves image quality better. Indoors, match anti‑flicker settings and practicals to 50 or 60 Hz power to prevent banding across frames.

Rule of thumb: pick your fps, set shutter to ~1/(2×fps), then tune ISO and aperture for the look. For a deeper walkthrough with examples, this guide on shooting slow motion explains shutter angle and exposure choices clearly; cheat sheet: 24p delivery favors 48–120 fps capture, 1/(2×fps) shutter, and extra light or ISO.

How to avoid choppy slow motion footage

Pre‑shoot checklist: confirm your camera can sustain the chosen high‑fps mode without overheating or heavy crops; use a fast card or recorder and check buffer behavior; test quick clips for dropped frames and rolling shutter; verify the field of view at that fps and reframe if needed; and plan for roughly two to three stops more light than a 24p setup.

In camera, lock exposure with manual shutter and either manual or limited auto ISO so the look stays consistent across takes. Disable heavy processing that can drop frames, and prefer higher bit rates or RAW/ProRes when available to keep detail intact after slowing.

In post, interpret or conform your high‑fps clip to the timeline rate for native slow motion rather than stretching in real time. If you must go slower than your capture allows, try optical flow on a short test first; when stutter appears, adding natural motion blur in post can look better than using very high shutter speeds on set.

Always shoot and review a short test at final settings, on the screen and refresh rate your audience will use. For more field‑proven tips and setups, this compact guide to slow motion like a pro is a great companion, and remember that the problem is rarely what fps is slow motion but rather how you expose, conform, and light the scene.

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Final Thoughts on Understanding Frame Rates for Slow Motion

Understanding frame rates gives you predictable, cinematic slow motion and real control over how motion reads, whether you’re shooting a short film, a product demo, or sports highlights. If your camera tops out at 270 fps, you’ll now know how to map that number to playback rates, pick shutters, and plan lighting so those extra frames actually translate into smooth, watchable slow motion. Just be mindful that higher fps brings trade-offs — more light, bigger files, and possible heat or crop limits — so test settings before committing to long takes.

We answered the opening question “what fps is slow motion” by showing that it’s a relationship, not a single number, and by giving clear ranges, the slowdown formula, and shutter rules you can use on set. The practical rules — a 180° shutter baseline, choosing multiples of your delivery fps when possible, and a short pre‑flight checklist — make this repeatable for filmmakers, content creators, and coaches who need reliable results. So grab your camera, run a few quick tests at the rates we’ve shown, and enjoy revealing motion in ways you couldn’t before.