Leica M6 0.58 moving framelines during focusing

[pikapig]

Hi Guys

Need some advice, is it common for a M6 ttl frameline to move diagonally? My friend has one ttl that the frameline moving when she do her focusing.
She is using a Skopar 21mm ltm with a hansa adapter and the frameline will move as she focus from 0.7 to infinity and its significant to the movement.

Could this be due to the lens or the adapter? Or is this an issue? Thanks. Haven got a chance to pass her a VC adapter and another lens to test it.

 

[pikapig]

Oh found the answer already

its parallax correction on close focusing...

http://www.tallentsblog.com/tallent/Blog/Entries/2011/10/9_Leica_rangefinder_focusing_system.html

 

[crispy12]

All this technology was present in the first M3... can imagine how hi tech it was at that time

 

[pikapig]

Its amazing right?