The Rodenstock Apo-Sironar Digital 180mm Lens  offers large image circles while taking digital photos. This feature enables photographers shoot laterally shifted overlapping photos for stitching. Also, these Rodenstock lenses are very much useful when you want to take large-format photos with scanner backs.

• Even with standard area sensor sizes, it is possible to take real wide angle shots in 35 mm focal length
• The HR Digaron-W 70 mm and 90 mm lenses produce image circle of 100 mm and 125 mm diameter that can be used to close the gap between 55 mm and 105 mm focal lengths
• Due to small formats and high illumination of the CCD image sensor, the lenses cannot be stopped down as it is done in conventional photography
• These Rodenstock lenses’ small formats are very sensitive to higher diffraction and are optimized for working aperture of 8 to 11
• A special attention is given to the Rodenstock 180mm F5.6 APO Grandagon lens in the correction of the curvature field as the CCD line sensors have greater planarity than conventional roll and sheet films
• The uniformity of illumination is excellent in this Rodenstock 180mm F5.6 APO Grandagon lens and it can produce distortion-free images
  
  
  

Lens: 180 mm f/5.6
Max. recommended film format: 72x96 mm
Shutter size: 1
Push-on mount Ø: 70 mm
Filter thread: M 67 × 0.75
Rear barrel Ø: 60.0 mm
Flange focal length: 177.0 mm
Flange focal end : 25.5 mm
Overall length: 65.2 mm
Weight w/Copal: 410 g
Shutter type and size: Copal 1
Shutter speeds range: B, T, 1/400 s … 1 s
Manual cocking: Yes
Self cocking: No
Mechanical: Yes
Electronic: No
x-synchronized: Yes
Screw thread: M 39 × 0.75
Lens board opening: 41.8 mm
Lens board thickness: 1.5 … 3.0 mm
Image scale: 1: infinity
Working f-stop: 8-11
Image angle: 45°
Image circle diameter: 150 mm
Movement range (vertical/horizontal) 37x49 mm: 53/48
                                                                         36x56 mm: 52/45
                                                                         40x54 mm : 50/45
                                                                          46x58 mm : 46/42
                                                                          72x88 mm : 25/22
                                                                           72x96 mm : 21/18