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Control depth-of-field and selective focus with a simple tilt of the lens. Lightweight, compact, and rugged, the Zörk Multi Focus System provides continuous focusing from infinity to macro range. |
Tilt – for precise control of the image plane for stunning selective focus effects. |
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The Zörk Multi Focus System is one of the most versatile photographic tools on the market today with up to 25 degrees of tilt / swing in a 360 degrees of rotation. MFS shown, above, with 100mm Schneider Componon HM. The the Zörk US Product Guide for complete MFS kits and pricing. |
MFS combined with the Zörk Pro Shift Adapter creates a unique mini view camera for medium format cameras. The MFS may also be combined with the Panaroma Shift Adapter for full view camera movements on digital and 35mm film cameras. |
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Overview The Zörk Multi Focus System (MFS)
belongs in every serious photographer's camera bag. This compact,
versatile, precision-built device is the perfect answer to some of the
most challenging photographic applications: portraiture, macro, table-top,
fashion, landscape, and travel – to name a few. The Zörk MFS uses an
ingenious Tilt Tube® that provides up to 30° of tilt / swing along any
axis, through 360° of rotation. This range of movement is unattainable in dedicated tilt lenses for 35mm or medium format cameras. Only the MFS
offers view-camera level adjustment.
Image plane control - how it works First, consider the relationships among three "planes" when we photograph an object: 1) the subject plane (the angle of the subject relative to the camera position) 2) the image plane (the image inside the camera that is projected by the lens onto the film), and 3) the film plane (where the film lies in the camera). For the sake of discussion, both the subject and film plane are fixed; the image plane can be moved around its axis by tilting the lens. When you tilt the lens in the direction of the subject you plane, you also move the image plane relative to the film plane. A tilted image plane brings the projected image (of the subject) into a parallel relationship with the film plane. As a result, the subject appears sharp on the film (and through the SLR viewfinder). This is know as the Scheimpflug effect. This effect is aperture-independent: it occurs no matter what aperture is used. When the subject, image, and film planes are parallel to begin with (such as when we photograph a wall, positioning ourselves so that the camera film plane is parallel), the subject will appear sharp. We do not need to stop down the lens or tilt, because depth-of-field is not a factor in image sharpness. However, when the subject and film planes are at an angle, relative to each other and we want the image to appear in focus, we either stop down the lens or tilt it – to bring these planes into alignment. |
Tilt – for effective increase of depth-of-field in table-top applications, without stopping down! |
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Tilt – to make the most of lighting with macro and clinical photography For more examples of images using the MFS, please visit our gallery. |
The Scheimpflug effect
The "Scheimpflug effect" allows you to increase effective depth-of-field simply by tilting the camera lens along its axis in the direction of the image plane (as illustrated above). This technique of sharpness distribution control - normally only possible with the swing and tilt movements of a view camera - allows you to align the lens with any subject plane, without changing the camera position or stopping down the lens. This means that you can use a wider aperture and a faster shutter speed, reducing or eliminating the risk of camera shake or blur due to subject movement, or simply have greater overall depth-of-field for a given aperture.
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