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Diagram illustrating the flange focal length of an SLR–type and a mirrorless–type camera. For an interchangeable lens camera, the flange focal distance (FFD) (also known as the flange-to-film distance, flange focal depth, flange back distance (FBD), flange focal length (FFL), back focus [1] or register, depending on the usage and source) of a lens mount system is the distance from the ...
A twin-lens reflex camera (TLR) is a type of camera with two objective lenses of the same focal length. One of the lenses is the photographic objective or "taking lens" (the lens that takes the picture), while the other is used for the viewfinder system, [ 1 ] which is usually viewed from above at waist level.
The viewfinder thus acts as a kind of lens filter. [1] [2] [3] The most popular method involves using a digital camera as the image taking camera and an intact twin-lens reflex camera (TLR) or pseudo-TLR as the "viewfinder" camera. [4] TLRs typically have square waist-level viewfinders, with the viewfinder plane at 90 degrees to the image plane ...
The T-mount is a standard lens mount for cameras and other optical assemblies. The usual T-mount is a screw mount using a male 42×0.75 (42 mm diameter, 0.75 mm thread pitch) metric thread on the lens with a flange focal distance of 55 mm and a mating female 42mm thread on a camera adapter or other optical component.
"Pulling focus" refers to the act of changing the camera lens's focus distance to a moving subject's distance from the focal plane, or the changing distance between a stationary object and a moving camera. For example, if an actor moves from 8 metres (26 ft) to 3 metres (9.8 ft) away from the focal plane, the focus puller changes the lens's ...
Donald Trump's election victory last week is already having an effect on global supply chains. While many firms are waiting to see what Trump's trade policies will be, some are planning ahead.
All my friends here in Los Angeles all told me how great I look, which definitely helped. And I could see it on the air. Deep down, I'm shallow,” he admits. “I care a lot about how I look on ...
This distortion can be reduced by using a swing-lens camera with a standard focal length lens. The FT-2 has a 50 mm while most other 35 mm swing lens cameras use a wide-angle lens, often 28 mm. [citation needed] Similar distortion is seen in panoramas shot with digital cameras using in-camera stitching.