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.
The really interesting question however is: “What if you combine a Dolly Zoom shot and the Cinefade effect?” Surely the two in-camera effects combined would look mind-blowing…
THE LIGHT TRANSMISSION FILTER CAN 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.
Cinefade, the novel camera accessory was used to gradually transition from a deep to a shallow depth-of-field in one shot at a pivotal moment in The Commuter (2018), directed by Jaume Collet-Serra. Liam Neeson's character Michael MacCauley is fired from his job as an insurance salesman. To accentuate this dramatic moment in the story, the background slowly becomes blurry, forcing viewers to focus on Michael as his state-of-mind shifts and the gravity of the situation hits him full force.
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 to draw attention to the depth of field effect and effectively communicate to the regular user the capabilities of the P10 phone and artistic value that the feature offers.