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Reference

Eleven charts, each answering a numeric question completely

Thread dimensions and pin spacings, sensor sizes and crop factors, ND densities and filter factors, codec bitrates and storage per hour, card speed classes, gimbal payloads, rig weights and battery runtimes. Every figure has a stated basis.

11 pages in this section

Rigging and support

Threads, payloads, weights and power, with the numbers a build decision needs.

  • Camera Rig Thread and Mount Standards Chart

    Every mounting standard on a camera rig in one table: thread sizes and pitches, ARRI pin spacing, NATO rail dimensions, rosette specifications, rod diameters and plate standards..

  • Camera Rig Weight Chart

    Typical weights for camera bodies, lenses, cages, monitors, batteries and rigging, with complete build totals for run and gun and narrative configurations..

  • Gimbal Payload Chart

    Rated payloads for current camera gimbals alongside the 70 to 80 percent safe working load, with typical rig weights so you can match a stabiliser to a real build..

  • V-Mount Battery Runtime Chart

    Runtime figures for V-mount and NP-F batteries against typical camera rig loads, with the device draw table and the airline rules that shape capacity choice..

Optics and exposure

Sensor sizes, filter densities, threads and the shutter conversions behind them.

  • Sensor Size and Crop Factor Chart

    A reference table of camera sensor dimensions, crop factors, diagonal measurements and full frame equivalent focal lengths for every common video format..

  • ND Filter Stops Chart

    A complete neutral density reference table converting ND numbers, optical densities, filter factors and stops of light reduction, with the exposure maths behind each..

  • Filter Thread Sizes Chart

    A reference table of camera lens filter thread sizes, step ring combinations, matte box backing diameters and the tray formats that fit them..

  • Shutter Angle and Frame Rate Chart

    A complete conversion table from shutter angle to shutter speed at every common frame rate, with flicker-safe settings for 50 Hz and 60 Hz mains..

Codecs and media

Bitrates, storage and card speeds, which are three views of the same decision.

  • Codec Bitrate Chart

    A reference table of video codec bitrates, storage per hour and required sustained card write speed, covering long-GOP, all-intra, ProRes and RAW formats..

  • Video Storage Per Hour Chart

    How much storage every common video codec consumes per hour, how long each card and drive capacity lasts, and how to plan a shoot day including backups..

  • CFexpress and SD Card Speed Chart

    A reference table of CFexpress Type A and Type B, SD UHS-I and UHS-II speed classes, what each sustains, and which camera modes each supports..

What these pages are for

Looking something up. A thread dimension, a filter density, a bitrate, a payload rating, a runtime. Each page puts the answer in a table near the top and then explains what the numbers mean underneath, so it works both as a quick reference and as an explanation.

They are also written to be quotable. A chart that answers a numeric question completely in one table is what an AI assistant cites, and this portfolio already earns more from Bing and Copilot citations than from Google rankings. That is a measured fact about how these sites are found, not a theory.

Every figure has a stated basis. Where a number is a manufacturer specification it says so; where it is a calculation it shows the formula; where it is a practical rule of thumb it is labelled as one rather than presented as a standard.

The conversions worth memorising

Bitrate divided by 8 gives the sustained card write speed in megabytes per second. Bitrate multiplied by 450 gives gigabytes per hour. Those two cover almost every media question you will have.

A 180 degree shutter is the frame rate doubled, expressed as a fraction. Twenty four frames per second wants 1/48, sixty wants 1/120. That is the whole shutter angle table in one sentence.

ND density rises by 0.3 per stop and the ND number doubles per stop, so ND8 is 3 stops at density 0.9. Battery runtime is watt hours divided by watts, times about 0.85. Gimbal working load is 70 to 80 percent of the rated payload. Those five relationships cover most of what these charts contain.

Where the numbers come from

Manufacturer documentation, published interface and mounting standards, and calculations from those figures. Dimensions like the 44mm NATO rail width and the 21mm ARRI pin spacing are standards; payload ratings and brightness figures are manufacturer specifications; storage and runtime figures are arithmetic applied to those specifications.

Practical rules of thumb are marked as such and there are only a few: the 70 to 80 percent gimbal working load, the 0.85 power conversion factor, the assumption of roughly a third of quoted wireless range indoors, and the 5 lb threshold for a shoulder rig. Each holds up in use and none is a published value.

This is researched reference material rather than professional advice. Check load ratings, airline regulations and electrical specifications against current documentation for the exact equipment you own before relying on them.

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