On cinema cameras e.g. from Blackmagic Design or RED, is there any accessory that someone can purchase to make adjusting depth of field easier? I mean, instead of rotating the circular dial on the lens at the front of the camera, maybe there could be a lever which can be attached to the camera rig where one moves it horizontally or vertically with two fingers to adjust for depth of field. The center position can be neutral. A concept of such lever is in the below picture:
http://www.butkus.org/chinon/chinon/ceii-metrotone/body09.jpg
This lever will make it so convinient especially when the cameras have super long lenses and especially if there is a moving camera shot that has a change of depth of field in the shot. Instead of the camera operator having to stretch/extend their hand all the way to the lens at the front to rotate the lens dial to change depth of field, while having the added task of moving the camera, the separate add-on accessory depth of field lever solution can make things better by being present, perhaps on the camera rig at the back of the camera, or somewhere on the tripod, where it is within easy and convinient reach for the camera operator.
So, does any such depth of field lever exist?
edit - I just realized that I should have posted this under Cameras and Lenses
http://www.butkus.org/chinon/chinon/ceii-metrotone/body09.jpg
This lever will make it so convinient especially when the cameras have super long lenses and especially if there is a moving camera shot that has a change of depth of field in the shot. Instead of the camera operator having to stretch/extend their hand all the way to the lens at the front to rotate the lens dial to change depth of field, while having the added task of moving the camera, the separate add-on accessory depth of field lever solution can make things better by being present, perhaps on the camera rig at the back of the camera, or somewhere on the tripod, where it is within easy and convinient reach for the camera operator.
So, does any such depth of field lever exist?
edit - I just realized that I should have posted this under Cameras and Lenses
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