Video settings for aircraft footage: frame rate, shutter speed, resolution, ND filters

You’re standing at the fence, the jet is taxiing to the runway – and everything on the display is too bright, the pan is jerky, and in the evening the apron lighting flickers. Behind almost all of these problems lies the same cause: the video settings for aircraft footage don’t fit together. Frame rate, shutter speed, resolution and ND filter depend on each other like gears. This guide shows you in which order to set them, which starting values have proven themselves at the airport and how to calculate the right ND strength.

The short answer

For most aircraft videos in Europe, this combination works: 4K or Full HD, 25p or 50p, shutter speed 1/50 s or 1/100 s respectively, lowest ISO, aperture around f/8 and an ND filter that swallows the excess brightness. On top come continuous autofocus with subject tracking and manual, or at least locked, exposure, so the brightness doesn’t pump when you pan from the bright sky to the dark apron.

The basics around camera movement, sound and editing are in the guide Shooting plane spotting videos. How to build scenes is shown by the article Composition in aircraft videos. This one is about the technical levers in the camera menu – and why they influence each other.

Step 1: set the frame rate

The frame rate is the first decision, because everything else builds on it. It states how many individual frames per second the camera records. Historically, three families have emerged: 24 frames per second from cinema, 25 and 50 from the European PAL countries, and 30 and 60 (more precisely 29.97 and 59.94) from the NTSC countries like the US and Japan.

For spotters in Germany, Austria and Switzerland, the 25 family is the obvious choice. It matches the European mains frequency of 50 Hz, which becomes important under artificial light, and YouTube explicitly lists 25 and 50 frames per second among the common upload frame rates.

Frame rate	Effect	Typical use at the airport	Shutter speed by the 180-degree rule
24p	cinematic, slightly jerky on fast pans	cinematic clips, documentation	1/48 s, practically 1/50 s
25p	calm, European standard	taxiing movements, overviews, apron scenes	1/50 s
50p	smooth, “live”-like	takeoffs, landings, panning shots	1/100 s
100p / 120p	slow motion in a 25p or 30p timeline	touchdown, tire smoke, reverse thrust	1/200 s or 1/240 s

Pans at 25p can judder when you follow a fast aircraft tightly in the frame. Many spotters therefore film takeoffs and landings in 50p and either place them in a 50p timeline or slow them down slightly. You should avoid mixing 25 and 30 frame rates in the same project, though: converting creates stutter that is especially noticeable with smoothly taxiing aircraft.

Planning slow motion properly

For slow motion, you record at a high frame rate and play the footage back more slowly. 100p in a 25p timeline gives movement four times slower; 50p in 25p halves the speed. For a touchdown with tire smoke, even double slowdown is often enough. In the menu, check whether your camera reduces the resolution, crops the frame or turns off the sound at high frame rates – that varies by model.

Step 2: couple the shutter speed to the frame rate

When taking photos, you freeze jets with very short speeds, as described in the guide to camera settings for plane spotting. In video, that is counterproductive: every single frame becomes razor sharp, and the sequence looks harsh and strobe-like in motion.

The solution is the 180-degree rule from film technology. It says that each frame is exposed for half the time it stays on screen. As a formula: shutter speed equals one divided by twice the frame rate. This results in a slight motion blur per frame that the eye perceives as natural.

The rule is a starting point, not a law. Shorter speeds deliberately produce a nervous, harsh look that can be wanted in action scenes. At the airport, though, there are two reasons to stick to the rule:

• Propellers: With turboprops like the ATR 72-600 or the Dash 8-400, a longer shutter speed makes the rotation visible as blur. With short speeds, the blades seem to stand still or bend. The background is explained in the article Photographing propellers.
• Rolling shutter: Most camera sensors and practically all smartphones read out the image line by line. Fast pans then lead to fuselages that look slanted, and handheld vibrations lead to the “jelly” effect. Calm camera handling helps more than any setting – tips are in the guide Steady aircraft videos.

Artificial light and flicker

In the evening and at night, a third factor comes in. Many lamps pulse at twice the mains frequency – in Europe, 100 times per second. If the shutter speed doesn’t cover a whole number of these light pulses, each frame gets a different amount of light, and the video flickers or shows moving bands. In 50 Hz countries, 1/50 s and 1/100 s are therefore safe values; in 60 Hz countries like the US and Canada, 1/60 s and 1/120 s. Japan is a special case: the east with Tokyo runs on 50 Hz, the west with Osaka on 60 Hz.

For your 25p and 50p footage, the 180-degree rule in Europe thus automatically matches the power grid. It gets critical with slow motion under apron lighting or when traveling in 60 Hz countries. How to recognize and photograph aircraft at night at all is described in the guide Photographing aircraft at night.

Step 3: set aperture and ISO

With frame rate and shutter speed, two of the three exposure variables are fixed. That leaves aperture and ISO.

Aperture: At the airport, you mostly film with telephoto lenses over long distances. An aperture around f/5.6 to f/8 delivers good sharpness with most lenses and enough depth of field for an aircraft to stay sharp from nose to tail. Stopping down further than f/11 brings little at telephoto focal lengths and can even cost sharpness through diffraction. Misusing the aperture as a brightness control is therefore not a good idea.

ISO: In the standard profile, you choose your camera’s lowest native ISO. With log profiles, the minimum ISO of many cameras is considerably higher. That increases the need for ND filter substantially – more on that in a moment.

Exposure control: Activate the zebra display if your camera has it. It shows with stripes where bright areas clip. White fuselages against a bright sky are especially prone to it. A histogram in the live view helps as well. How to deal with backlight is explained in the article Backlight in aircraft photography.

Step 4: choose the right ND strength

Now it becomes clear why ND filters are indispensable when filming. On a sunny day, the correct exposure by the classic Sunny 16 rule is at f/16 and a shutter speed of one divided by ISO – at ISO 100, that is 1/100 s. If you open up to f/8, the image gets four times brighter, and the matching speed would be 1/400 s. But you want 1/50 s. Three stops are missing, and exactly those are taken away by an ND8 filter.

Filter designations follow the filter factor: an ND2 halves the light (one stop), an ND4 quarters it (two stops), an ND8 lets through an eighth (three stops). Some manufacturers give the optical density instead. Each step of 0.3 corresponds to one stop – ND 0.9 is therefore the same as ND8.

Designation	Optical density	Stops	Light transmission
ND2	0.3	1	50%
ND4	0.6	2	25%
ND8	0.9	3	12.5%
ND16	1.2	4	about 6%
ND32	1.5	5	about 3%
ND64	1.8	6	about 1.6%

With the calculator, you can estimate which filter fits your combination:

An example shows how quickly the values climb: if you film in a log profile with a minimum ISO of 800 at f/8 and 1/50 s, the calculation gives a factor of 64 – that is, an ND64. Without a filter, the image would be overexposed by six stops.

Variable or fixed?

A variable ND filter consists of two polarizing filters, one of which is rotatable. That lets you adjust continuously, which is very practical at the fence with changing clouds. The price: two glass surfaces cost some image quality, and at the strongest end the darkening can become uneven. Many models therefore mark a usable range. Fixed ND filters are optically less critical but have to be swapped when the light changes a lot. What else belongs in the camera bag is in the gear checklist; a comparison of further filter types is in the article Polarizing filters and other filters.

Step 5: resolution, bitrate and bit depth

4K or Full HD?

4K UHD has 3840 × 2160 pixels, and thus four times as many as Full HD at 1920 × 1080. For spotters, this is interesting less because of sharpness on the TV and more because of the headroom in the edit: in a Full HD timeline, you can enlarge 4K footage by a factor of two without dropping below the output resolution. That is practically additional focal length – especially when an Airbus A380 lands on the far runway and your lens doesn’t reach any farther. There is also room for later stabilization and for vertical crops.

Pay attention to the mode: some cameras read out the whole sensor for 4K and downsample, while others use only a crop or skip lines. The crop lengthens the effective focal length, and line skipping costs image quality. What your model does is in the manual.

Bitrate and codec

The higher the bitrate, the more detail is preserved in difficult scenes – such as heat shimmer over the asphalt, rain or exhaust blast. Efficient codecs like H.265 need less data for the same quality than H.264 but put more strain on the editing computer. Many cameras also offer a choice between long-GOP (economical, frames build on each other) and All-Intra (each frame compressed individually, larger files, easier to edit). For uploads, YouTube recommends around 8 Mbps for Full HD at 24 to 30 frames per second and 12 Mbps at 48 to 60 – your recording should be well above that so quality is left after the edit.

8-bit, 10-bit and chroma subsampling

8-bit stores 256 brightness levels per color channel, 10-bit 1,024. You see the difference mainly in smooth gradients like a cloudless sky once you intervene heavily in post-processing – with 8-bit, banding appears more quickly. The designation 4:2:0 or 4:2:2 describes how much color information is stored: with 4:2:2, it is only halved horizontally, with 4:2:0 horizontally and vertically. For social media, 4:2:0 is usually entirely sufficient; for color correction and keying, 4:2:2 is more robust.

Log profiles pull the largest dynamic range from the sensor but deliver flat, gray raw images that you grade in the edit. They pay off when you want to save backlight, bright fuselages and dark shadows at the same time – and have the time for grading. The workflow is shown in the guide Log profiles and color grading.

The settings in the right order

The fixed white balance is easily forgotten. In auto mode, the camera shifts the colors as soon as a colorful fuselage or a large grass area enters the frame. With a fixed value, such as for daylight, the colors stay stable across the whole clip. More about colors is in the article Correcting white balance and colors.

Starting values for typical situations

At the visitors’ hill (Besucherhügel) of Munich Airport or the Zeppelinheim viewing platform at Frankfurt Airport, light and distance change depending on the time of day and runway direction in use. Which side has the better light when, you can sort out beforehand with the guide Planning the sun position. For heat above the asphalt, the article Avoiding heat shimmer helps additionally.

Smartphone: what is left of it

The same principles apply with a smartphone, only the operation is different. The standard camera app usually controls the shutter speed automatically and picks very short speeds in sun – the result looks harsh. With a camera app with manual video settings, you can set frame rate, shutter speed and ISO yourself. For the 180-degree rule in daylight, you then need a clip-on ND filter on the phone, too. Which apps are suitable is shown by the article Camera apps for plane spotting, and the complete smartphone workflow by the guide Aircraft videos with your smartphone.

Checklist before the first clip

If you’re just starting out and still wondering what gear you need, the overview Video gear for beginners helps. And before you publish videos: radio recorded in the audio track is legally delicate – why is explained in the article Publishing aviation radio in videos.

Conclusion

Good video settings for aircraft footage are no secret knowledge but a chain: frame rate determines shutter speed, shutter speed determines ND strength, and aperture and ISO stay in the clean range. If you work in Europe with 25p or 50p, the 180-degree rule and a suitable ND filter, you get smooth motion, flicker-free evening footage and enough quality for the edit. 4K, 10-bit and log are sensible extensions if you seriously post-process your footage – they’re not mandatory.