How to adjust depth of field in film

In the past, Cinematographers have always been limited to choosing a depth of field that stays consistent throughout the shot. A variable depth of field that creates a sort of focus blur or background blur effect has vast creative applications and the potential of becoming a must-have feature for Lens Control Systems (LCS).

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Variable depth of field effect in Huawei P10 commercial

David wanted to gradually transition from a deep depth of field to a shallow depth of field in one shot to blur the background and isolate the foreground subject. This draws attention to the depth of field effect and communicates to consumers the capabilities of the P10 phone and the artistic value that the feature offers.

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Motorised variable ND filter for professional film productions

The novel Cinefade system synchronises the external iris motor of a professional camera system with a light transmission filter to vary depth-of-field in film.
The same light transmission filter can also be used individually as a motorised variable ND filter that is remotely controlled by a cmotion lens control system to allow for precise and fast exposure changes when the camera is inaccessible or when the creative brief calls for an exact T-stop to maintain a consistent depth-of-field.

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Easier focus pulls on tracking shots with Cinefade

Tracking shots at a shallow depth of field in which the camera tracks closer to the subject are notoriously hard for focus pullers to keep sharp, especially if the subject is also moving. A variable depth of field can be used to extend the depth of field when tracking towards the subject to give the focus puller a better chance of nailing critical focus.

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Motorised Polariser for Bentley automotive commercial

Our Motorised Polariser can be used independently as a ‘MotoPola’ that has end stops for easy calibration, allows users to set marks and can be controlled remotely, which sets it apart from similar products such as the Tiffen Multi Rota Tray or ARRI’s Rota Pola frame.

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Combining Cinefade with a Dolly-Zoom shot

The Cinefade shot is often compared to the Dolly Zoom shot, also known as the Vertigo effect, Trombone shot, Zolly amongst many others. Although it is technically different, the comparison refers to the narrative motivation behind applying one of the two shots in a film: Accentuating a pivotal moment in the narrative.

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Variable ND filter for film

The cmotion Cinefade filter can be used as a motorised variable ND filter that is remotely controlled by a lens control system to allow for precise and fast exposure changes when the camera is inaccessible or when the creative brief calls for an exact T-stop to maintain a consistent depth-of-field.

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Paul Cameron ASC uses Cinefade to vary depth of field in The Commuter

“Director Jaume Collet-Serra and I wanted a severe depth-of-field shift to accentuate Liam Neeson's experience - something to isolate him from his surrounding world. I was in the process of designing a system when my A-camera first AC, Dave Cozens, came upon Cinefade. It was exactly what we were looking for.”

- Paul Cameron ASC

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