How to Film Your Form: Angles, Distance and Light

Step by step

Pick the angle for the lift. Side-on (90 degrees) shows bar path, depth, back angle and knee travel, so it suits squats, deadlifts, presses and rows. Front-on shows knees caving, uneven hips and a lopsided bar. A 45-degree angle is a fair compromise when you can only take one clip.
Set the distance. Stand the phone two to four metres away. Your whole body, the bar or dumbbells, and a little floor in front and behind should fit in the frame through the whole rep. Too close and the lens distorts your limbs; too far and small details disappear.
Set the height. Place the lens at roughly hip height for squats, deadlifts and lunges, and at bench height for pressing on a bench. A camera on the floor pointing up, or held high pointing down, makes depth and back angle look different from reality.
Fix the light and background. Face a window or the main gym lights rather than standing with them behind you, which turns you into a silhouette. A plain wall behind you helps both you and any app read your outline. Wear clothes that contrast with the background.
Steady the phone. Use a small tripod, a phone clamp, or lean the phone on a water bottle or plate. Landscape orientation fits most lifts better. Make sure nothing will knock it over and that it is not in anyone's walkway.
Record a working set. Start recording before you unrack and stop after you rerack. Film sets at the weight you actually train with, as form often changes on the last hard reps. Film the same lift from the same spot each time so clips are comparable week to week.
Review with a checklist. Watch the clip once at normal speed, then again slowed down or frame by frame. Check one thing at a time: depth, bar path, back position, knee and foot position, and whether the last rep looked like the first.

Why filming beats feel

What a lift feels like and what it looks like are often different. Many people feel they squatted deep when they stopped short, or feel their back stayed flat when it rounded at the bottom of a deadlift. A clip gives you an honest record you can study calmly, after your heart rate has come down.

Video also helps you see change over time. If you film the same lift every few weeks from the same spot, you can compare depth, speed and bar path as the weight goes up. That is far more useful than trying to remember how a set felt a month ago.

Best angle for common lifts

Most lifts are judged best from the side, because the important movement happens forwards and backwards. A front view is the second most useful, mainly for knees, hips and symmetry.

Squat: side-on for depth, back angle and bar over mid-foot; front-on for knees caving in and hips shifting.
Deadlift: side-on for back position, bar staying close to the legs and hips rising too fast.
Bench press: side-on or slightly from the feet for bar path and where the bar touches; from the head end for elbow flare and uneven arms.
Overhead press: side-on for leaning back and bar path around the face.
Rows and pull-ups: side-on for body swing and range of motion.
Lunges and split squats: front-on for knee tracking; side-on for torso lean and step length.

What to look for in the clip

Go in with a short checklist rather than looking for everything at once. Watch the first rep and the last rep side by side, because fatigue is when form usually slips.

Range of motion: did you reach the same depth or lockout on every rep?
Bar path: for squats, deadlifts and presses, the bar should move in a fairly straight line over the middle of your foot.
Back position: does your lower back stay roughly neutral, or does it round or overarch under load?
Knees and feet: do knees track in line with your toes? Do heels stay down?
Tempo: are some reps much faster or jerkier than others?
Symmetry: does one side drop, twist or lock out before the other?

Common filming mistakes

The most common mistake is cutting off part of the body. If your feet or the bar leave the frame at the bottom of a rep, you cannot judge depth or bar path. Check framing with a light warm-up set first.

Other common problems are filming from a strong upward angle, filming in portrait for a wide lift, standing with a bright window behind you, and changing camera position every session. Each one makes clips harder to read and harder to compare.

Be considerate in a shared gym. Do not film other people without asking, keep your tripod out of walkways, and do not hog a rack to rewatch clips between sets.

Live feedback with RepSensei

RepSensei can use your phone camera to count reps and flag some visible form issues while you train, such as a shallow squat. It runs on your phone, so no video is uploaded and you do not need an account. The same setup rules apply: a stable phone, your whole body in frame, and good light.

Treat any camera feedback, from an app or your own eyes, as one view from one angle. It can point out things worth checking, but it cannot confirm that your form is correct or safe. If something hurts, stop and see a doctor or physiotherapist. A qualified coach watching in person is still the best check for technique.

Questions

What is the best angle to film a squat?

Side-on, with the camera at about hip height and two to four metres away. This shows depth, back angle and bar path. Add a front view if you want to check whether your knees cave in.

Should I film in slow motion?

Record at normal speed and slow it down when reviewing. Slow-motion recording can make it harder to judge your real tempo and creates larger files.

How often should I film my lifts?

Every few weeks for each main lift is plenty for most people, plus any time you change technique or hit a new heavy weight. Filming every set tends to distract from training.

Can an app tell me if my form is correct?

No app can confirm that form is correct from one camera angle. Tools like RepSensei can count reps and flag some visible issues, which is useful as a prompt to look closer. They do not replace a coach or professional advice.

How to Film Your Form