I thought all Rodenstock optics in the HR magenta band were retrofocus design. The HR-SW was a totally new design also retrofocus. Schneider’s optics are symmetrical lens designs. All the way to the 120mm.
Paul C
The older 90 mm was called Apo Sironar digital 5,6/90 mm and it was not a HR lens.
HR lenses were 23, 28, 35, 60, 70, 180.
After developing new HR lenses with bigger image circle Rodenstock changes the name to Digaron -W HR.The color changes to blue. So you get Digaron-W HR: 32, 40, 50, 70 (the older magenta), and 90 ( the older magenta).
rodenstock renamed the 90 mm to digaron W HR not becouse of similar lensdesign, but becouse of the possibility to resolve the new sensors. So the 90 mm is a different lens in the Digaron-W hr group.
The new Digaron WS is the new retrofocus lens with similar design and behavior like the new generation 32,40,50 mm.
that means outstanding sharpness even wide open, great sharpness till the end of the image circle, no problems with the color cast, but big and with some distortion.
The older 90 mm have bigger image circle that the new, but the sharpness out of the center decrease more than the new. this is the difference between the rodenstock retrofocus design and the symetrical. The apo sironar digital lenses that have symmetrical design like schneider are: 35, 45, 55, 100, 120,135,150, 180 ( the non HR version ) and the 210mm.
The interesting point is that schneider and not rodenstock startet with a retrofocus lens: the older Digitar L 2,8/28mm (60 mm image circle). But they did not continued this way.
