Cambo WRX-138 Rodenstock 138mm f6.5 HR Digaron-SW Float (Long Barrel) Lenspanel with Phase One X-Shutter for XT and Wide-RS


The WRX-138 Float Lenspanel is dedicated to the use with the Cambo Wide RS series or Phase One XT cameras along with Phase One IQ4 Digital Backs and has a Rodenstock 6.5/138 HR-Float Digaron-SW lens with Phase One X-Shutter mounted in a helical focusing mount, which also drives a floating element for optimal sharpness at any focussed distance.

This lens is suitable for use with all Phase One IQ4 models.

- Angle of view: 43.5°
- f-top range: 6.5 - 32 (recommended 6.5)
- Image Circle: 110mm
- Front filter thread: 67mm
- Push on Cap: 70mm
- Rear mount diameter: 54mm

Movement ranges at sensor sizes (mm):
24 x 36 mm ↑ 40 → 36
33 x 44 mm ↑ 34 → 30
40 x 54 mm ↑ 24 → 24

This lens can be used on the Phase One XT camera System without electronic communication (i.e. no lens or shift information transmitted between camera and lens)

NB: Some images not of actual item.

Product code CAM-99164138

The Rodenstock HR Digaron-SW float 138 mm f/6.5 is an exceptional sharp long focal length lens for adjustable technical cameras intended for a wide distance range from infinity up to an image scale 1:5 (β' = -0,2).

The optical design with eleven lens elements in ten groups is very complex for a prime lens. It has the highest possible resolving power extremely close to the diffraction limit. This is not only achieved across the entire field of the largest digital sensors – but also to the edge of the large 110mm image circle to allow for lens shifts and tilts.

The rotation of the focusing ring automatically controls the floating elements group and all aberrations are therefore minimized throughout the whole focusing range.

Even with extreme camera movements (shift and tilt) this lens provides an unprecedented sharpness to the corners as proven by the MTF curves given up to 80 lp/mm on the following pages 4 to 6. It provides negligible distortion (almost always below 1‰) and a total suppression of the chromatic aberration for perfect freedom from color fringing.

The image circle of the HR Digaron-SW float 138 mm f/6.5 has a constant diameter of 110 mm throughout its entire image scale range. For professional technical cameras, even with the largest sensor formats, this gives ample clearance for parallel shifts for perspective corrections (avoiding or reducing converging vertical lines). This also allows swing and tilt for extended depth of field without excessive stopping down of the aperture according to the Scheimpflug rule.

In the studio the electronic Rodenstock eShutter can be controlled easily via USB from the computer or with an app from an iPhone, iPod, iPad or a similar Android mobile device. It can also be operated with the remote controller Sinar eControl with a rechargeable Li-Ion battery offering independent use on location.

The broad focusing ring of the helical mount allows sensitive and precise focusing and automatically controls the adjustment of the floating elements group mentioned above

Shortest focal distance to object: approx. 1.0 mtr
Image circle of lens at any f/stop: 110 mm

Optical Movements:

  • CCD size 37x37mm: 33/33 mm
  • CCD size 33x44mm: 34/30 mm
  • CCD size 36x48mm: 30/26 mm
  • CCD size 37x49mm: 31/27 mm
  • CCD size 40x54mm: 28/24 mm
  • CCD size 36x56mm: 29/24 mm

Camera Movements:

WDS: Up / Down / Left / Right: 34 / 26 / 20 / 20mm
WRS: Up / Down / Left / Right: 25 / 15 / 20 / 20mm

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