Leica M3 framelines?

[MHB]

I'm just trying to get straight how the M3 framelines work. With a lens off it stays in the 135mm position. When you put a 50mm or 90mm lens on, framelines change automatically. So when you move framelines selector lever with lens off, the lever is supposed to spring back to 135mm position, correct? Is the lever just a preview? So attaching a lens is the only way to actually change framelines? Thanks in advance!

 

[fmw]

I'm just trying to get straight how the M3 framelines work. With a lens off it stays in the 135mm position. When you put a 50mm or 90mm lens on, framelines change automatically. So when you move framelines selector lever with lens off, the lever is supposed to spring back to 135mm position, correct? Is the lever just a preview? So attaching a lens is the only way to actually change framelines? Thanks in advance!

Yes, the lens and viewfinder work with each other.