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Hyperfocal Distance Calculator for Video

Short answer

The hyperfocal distance is the closest focus setting that still keeps infinity sharp, and focusing there gives you sharpness from roughly half that distance out to infinity. A 24mm lens on Super 35 at f/8 has a hyperfocal distance of about 2 metres, so everything from 1 metre outward is sharp.

Hyperfocal focusing is the technique that maximises how much of a shot is sharp, and it is the correct approach for wide establishing shots, gimbal moves and unpredictable documentary situations. It works best on manual lenses with real distance markings, which is one of the quieter arguments for a set like the Sirui Night Walker S35 T1.2 Cine Set (24, 35, 55mm).

Calculator

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Set the format, focal length and aperture. The readout gives the hyperfocal distance, the near limit of sharpness when you focus there, and whether the technique is worth using at that combination.

Hyperfocal distance

0 m

focus here

Sharp from

0 m

out to infinity

Depth gained

0 m

against focusing at infinity

Is this technique worth using here

-

The formula

The hyperfocal distance is H = (focal squared) / (aperture x circle of confusion) + focal, with every term in millimetres. Focusing at H puts the near limit of acceptable sharpness at approximately H / 2 and the far limit at infinity.

The circle of confusion used here is the sensor diagonal divided by 1,500, which gives about 0.029mm on full frame and about 0.019mm on Super 35. A stricter figure produces a larger hyperfocal distance and a more conservative result, which is the right direction to err in for 4K delivery on a large screen.

Why focusing at infinity wastes depth

This is the part that makes the technique worth knowing. If you focus at infinity, the near limit of acceptable sharpness sits at the hyperfocal distance, and everything closer than that is soft. If you focus at the hyperfocal distance instead, infinity is still acceptably sharp and the near limit moves to half that distance.

In other words, focusing at infinity throws away half your usable depth for no benefit. On a 24mm lens on Super 35 at f/8, focusing at infinity gives sharpness from about 2 metres outward; focusing at the hyperfocal distance gives sharpness from about 1 metre outward. That extra metre is often the difference between a foreground element being part of the shot and being a blurred distraction.

Where the technique actually helps

Situation Use hyperfocal? Why
Wide establishing shot Yes Foreground and background both matter and nothing moves toward you
Gimbal move through an environment Yes Focus cannot be pulled while operating, so set it and forget it
Unpredictable documentary situation Often Maximises the chance that whatever happens is sharp
Timelapse or locked-off wide Yes Nothing changes, so maximum depth costs nothing
Interview or close-up No You want separation, not maximum depth
Narrative scene with a rack focus No The whole point is that depth is shallow and controlled

The pattern is clear enough: hyperfocal focusing is a documentary and wide-shot technique. It maximises the chance of sharpness, which is exactly the opposite of what a narrative close-up wants. The run and gun workflow guide covers where it fits in a reactive shooting day.

The aperture problem

Hyperfocal distance grows with the square of focal length and inversely with aperture, which means it becomes impractical quickly on fast glass. A 24mm lens on Super 35 at f/8 has a hyperfocal distance around 2 metres, so nearly everything in a wide shot is sharp. The same lens at f/1.4 pushes it out several times further, leaving very little usable depth in front of it.

That is the honest limitation. This technique belongs with stopped-down wide lenses in reasonable light, which is exactly the situation where you would want it. In low light at a wide aperture, hyperfocal focusing does not give you much and the answer is autofocus or a marked pull instead.

Marking the setting so you can use it

What makes a hyperfocal setting repeatable

A follow focus disc to mark, gear rings so a stills lens can be driven by one, and tape for marking a bare lens barrel.

Starter pick $59
Tilta Pocket Follow Focus

Tilta

Tilta Pocket Follow Focus

A geared manual wheel with A and B stops and fluid damping on a 15mm rod clamp, which is the whole job for a fraction of a wireless system.

Type
Manual, geared
Mount
15mm rod

Manual only, and that is often the right answer.

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A calculation you have to repeat is a calculation you will stop doing. Work out the hyperfocal distance for the aperture you shoot at most, set the lens there, and mark the position on the focus ring or the Tilta Pocket Follow Focus disc with a wax pencil. Then it is a position you return to instantly.

This works best on manual lenses with real distance scales and long focus throws. Many autofocus lenses use fly-by-wire focus rings with no fixed relationship between ring position and focus distance, which makes marking them unreliable. That is one of the quieter arguments for a matched cine set on any rig that uses this technique regularly.

Worked example: a gimbal walk through a location

A gimbal move through a corridor and into a room, shot on Super 35 at 16mm, in good light at f/5.6. The hyperfocal distance is roughly 1.5 metres, so focusing there gives sharpness from about 0.75 metres out to infinity. Everything the camera passes is sharp and no focus adjustment happens during the move, which is exactly what you want while both hands are on a stabiliser.

Compare that with autofocus on the same move. The system will hunt at every doorway and every change of subject, and each hunt is visible. Setting focus once and leaving it is both more reliable and more controllable, and it is why experienced gimbal operators frequently shoot wide and stopped down.

Where it interacts with diffraction

Stopping down increases depth of field and eventually reduces sharpness through diffraction, which is a real limit rather than a theoretical one. On a Super 35 sensor the effect starts becoming visible somewhere around f/8 to f/11 and is obvious by f/16.

That sets a practical ceiling on this technique. Going from f/5.6 to f/11 halves the hyperfocal distance and doubles the usable depth, at the cost of a slight overall softening. Going beyond f/16 buys depth you can no longer resolve. The depth of field calculator shows the same numbers from the subject-distance side.

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Common questions

What is hyperfocal distance?
It is the closest distance you can focus at while still keeping infinity acceptably sharp. Focus there and everything from roughly half that distance out to infinity falls within the depth of field, which is the maximum usable depth any given lens and aperture combination can produce.
When should I use hyperfocal focusing for video?
On wide establishing shots, on gimbal moves through an environment, and on any run and gun situation where a subject may appear at an unpredictable distance. It is a technique for maximising the chance that whatever happens is in focus, which is the opposite of the shallow depth of field most narrative work wants.
Does hyperfocal focusing work on fast lenses?
Less usefully, because the hyperfocal distance grows as the aperture opens. A 24mm lens on Super 35 at f/8 has a hyperfocal distance of a couple of metres, so nearly everything is sharp. The same lens at f/1.4 pushes it out several times further, which leaves much less usable depth in front of it.
Is hyperfocal focusing the same as focusing at infinity?
No, and the difference matters. Focusing at infinity puts the near limit of sharpness at the hyperfocal distance, wasting all the depth that would have existed closer. Focusing at the hyperfocal distance instead keeps infinity sharp and gains you everything from half that distance outward, which is roughly double the usable range.
Does hyperfocal distance change with sensor size?
Yes, because the circle of confusion scales with the sensor. A smaller sensor uses a stricter circle of confusion, which increases the hyperfocal distance for a given focal length and aperture. At matched framing, however, smaller sensors still end up with more depth of field, because they use shorter lenses to frame the same shot.
Can I mark hyperfocal on my lens?
Yes, and it is worth doing on any lens you use this way. Work out the hyperfocal distance for the aperture you shoot at most, set the lens there, and mark the focus ring or the follow focus disc. Then the setting is a position you can return to instantly rather than a calculation you have to repeat.

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How this page was researched. Specs come from manufacturer documentation, published payload and power ratings, and verified owner reviews. We do not claim to have had every one of these items in our hands, and we will not pretend otherwise.

This is researched guidance, not professional advice. Hyperfocal figures are geometric approximations based on a chosen circle of confusion. Confirm critical focus on a monitor rather than trusting a calculation.