Differences between Rodagon and Rogonar-S

[max_ebb]

Could anybody tell me what (if any) differences there are (in terms of sharpness) between a 105mm Rodenstock Rodagon (f5.6), and a 105mm Rodenstock Rogonar-S (f4.5)?

 

[JohnArs]

The Rogonar S has only 3 glasses and is the cheapest line of Rodenstock!
The Rodagon is a 6 glasses and much sharper at the corners.
And with the today's cheap prices it does not make sence to buy the much worser one!
Armin Seeholzer