What is the difference between the APO-Ronar and the APO-Ronar-CL lens? Is the latter suitable for landscape photography? I assume the APO-Ronar is, as it is current sold by various camera stores.

I am looking for a lightweight 360mm lens and the G-Claron is a little bigger than I would like, so I have been researching the Rodenstock line. I understand the Fujinon-A is a candidate, but is extremely hard to find (per the info at Kerry Thalmann's website).