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From Wikipedia, the free encyclopedia

A focus puller
A focus puller

A focus puller or first assistant camera (1st AC) is a member of a film crew's camera department whose primary responsibility is to maintain the camera lens's optical focus on whatever subject or action is being filmed.

"Pulling focus" or "rack focusing" refers to the act of changing the lens's focus distance setting in correspondence to a moving subject's physical distance from the focal plane, or the changing distance between a stationary object and a moving camera. For example, if an actor moves from 8m to 3m away from the focal plane within a shot, the focus puller will change the distance setting on the lens during the take in precise relation to the changing position of the actor. Additionally, the focus puller may shift focus from one subject to another within the frame, as dictated by the specific requirements of the shot.[1]

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  • ✪ The Art of the Focus Pull
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Transcription

Focus pulling

An advanced technique, there is often very little room for error, depending on the parameters of a given shot. As such, the role of a focus puller is extremely important within the realm of a film production; a "soft" image will, in most circumstances, be considered unusable, since there is no way to fix such an error in post-production. One must also consider that an actor may not be able to duplicate their best performance in a subsequent take, so the focus puller is expected to perform flawlessly on every take. Because of these factors, some production personnel consider the focus puller to have the most difficult job on set.

British cinematographer Oliver Stapleton has written:

The 1st AC (or Focus Puller) has one of the hardest jobs on the set. And it's one of those jobs that are never noticed until it is wrong. Then you get an almighty bollocking, or you get fired ... Focus Pulling not only involves what it sounds like, but also the Focus Puller "runs" the department, in the sense of taking care of all the camera gear, and making sure that everything is tickety-boo. I have my own camera, so it's treated very well! A focus puller relies heavily on the Operator to tell him if the shot is out of focus — after all only the operator is actually looking through the lens.[2]

Sharp focus is fundamental to reproducing a realistic, appealing image, and a viewer's attention is automatically drawn to sharper areas. When done correctly, good pulling goes mostly unnoticed by the audience.

Methodology

Once a camera position or overall "shot" is established by the director of photography and camera operator, the 1st AC begins to measure the various distances between the actors' marks and the focal plane of the camera. These distances are recorded in a series of grease pencil/pen marks on the focus barrel of the lens, and/or the marking disc or ring on the follow focus device. Traditionally, the focus puller used only their marks and their own well-developed sense of distance estimation to achieve good results. Over the last decade, the increased use of digital cameras, higher-resolution video taps and/or on-camera monitors have provided focus pullers with additional tools to help maintain proper focus. A high-definition monitor can be particularly useful when a fast-paced production simply does not allow time for the focus puller to set and check all marks that may be needed, or if no rehearsal will be provided.

The 1st AC may take surveying measurements of the general environment in order to have a good idea of the distances between reference points, such as patterns on the floor or walls, furniture, and whatever else might be around. These reference measurements can be used to quickly establish rough distances between the camera and the subject in chaotic shooting circumstances.

The 1st AC reports to the director of photography, works alongside the camera operator, and oversees the 2nd assistant camera (also known as the "clapper loader") and any other members of the camera department.

References

  1. ^ Bordwell, David (4 January 2016). Film art : an introduction. Thompson, Kristin, 1950-, Smith, Jeff, 1962 December 17- (Eleventh ed.). New York, NY. p. 193. ISBN 978-1-259-53495-9. OCLC 920966698.
  2. ^ Stapleton, Oliver. "Camera Department". So You Wanna Work in Movies?. Retrieved January 14, 2012.
This page was last edited on 16 August 2020, at 18:02
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