Rodenstock Photo Optics expands its HR Digaron lens series adding a new model with a focal length of 138 mm.
The new high-resolution lens features a floating elements group that is automatically adjusted when the focusing ring is rotated. This ensures exceptional sharpness for a wide distance range from infinity up to almost 1 m corresponding to a 1:5 image scale (β'=-0.2). The distortion is negligible (almost always below 1‰), and chromatic aberration is suppressed completely.
 The new lens is suitable for adjustable technical cameras with the largest available sensors (36x56 mm and 40x54 mm). It provides ample clearance for parallel shifts to correct the perspective or for swing and tilt according to the Scheimpflug rule – the very large 110 mm image circle can be fully utilized over the entire focusing range. The long focal length provides for a comfortable working distance even at the macro limit.
The new Rodenstock HR Digaron-SW float 138 mm f/6.5 is supplied with an integrated aperture stop body. The lens with the aperture stop body has no shutter and is therefore suitable for all camera systems with an integrated shutter as well as for digital backs with a global shutter.