Archived posting to the Leica Users Group, 2006/11/27
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]I can't remember all the details, or even my middle name half the time, but the DR lenses are all the same exact focal length. The rigid mount came in several variations to suit the slight focal length variations of the production line optical units. John Collier On 27-Nov-06, at 4:11 PM, Phil Swango wrote: > Marc Small wrote: >> I believe that the Rigid 2/5cm Summicron is identical >> optically to the DR/NF version of that lens, the only difference >> being in >> the lens mount, but I have never researched this and that could be >> a third >> design based on a common pattern. > > That's what Erwin Puts says too. I don't know if he's a reliable > source or > not. I've had both and couldn't see any difference.