squirrel$$$bandit
Veteran
M or LTM, any brand, 75, 85, 90, 100.
Canon 100mm f3.5 (LTM) is a fine performer and a very compact lens especially sort after in it's late all-black version.
I should clarify that by compact I don't necessarily mean smaller, but shorter--that is, which tele juts out least from the camera?
Perhaps the collapsible 90mm f4 Elmar
I didn't even know that existed--what a wild looking lens!
I know the Canon 100mm/3.5 LTM to be very short.
I have not seen any Nikkor 100mm 3.5. The 105mm 2.5 is heavy and large.
It is my favorite tele lens.