What is this for on the LX
Best regards, John
I've had 2 rattleing around in my camera bag for 30+ years and never used them. With the size of the hole it makes sense now.
Chris,
Pentax K1ii, K3, K-m & MX-1.
Pentax LX, MX, ME Super & MV.
"Old Skool" with the new!
K.
Kris Lockyear
It is an illusion that photos are made with the camera… they are made with the eye, heart and head. Henri Cartier-Bresson
Lots of film bodies, a couple of digital ones, too many lenses (mainly older glass) and a Horseman LE 5x4.
My website
I remember when I got my MX in around 1977, that the instruction manual referred to the tripod spacer ring being necessary to prevent over-long tripod screws puncturing the base of the mirror box, due to the short tripod socket that was employed because of the compact nature of the body. Don't know whether the same rationale was true for the LX; I suspect so.

K-3II - HD DA20-40 Limited, HD DA55-300PLM, SMC DA10-17 Fishy, AF201FG Flashy
6. When mounting the camera on a tripod, be sure that the tripod screw is no longer than 5.5mm. This is the depth of the tripod socket on your camera. If you use a longer screw, you will probably puncture the bottom of the socket, after which the camera will not function properly.
An regarding the tripod spacer:
7. In order to prevent large diameter lenses from interfering with proper mounting of the camera to the tripod, attach the Spacer Ring (packed with the camera) between camera and tripod.
Hope that helps clarify it.
Best regards, John

K-3II - HD DA20-40 Limited, HD DA55-300PLM, SMC DA10-17 Fishy, AF201FG Flashy

Must have missed that bit of the manual!
Bob

LennyBloke
And I've been using mine as a soft focus/clear centre spot filter for the past 30 years

Very 80s in more ways than one!

Kris Lockyear
It is an illusion that photos are made with the camera… they are made with the eye, heart and head. Henri Cartier-Bresson
Lots of film bodies, a couple of digital ones, too many lenses (mainly older glass) and a Horseman LE 5x4.
My website
been a member of Pentax Club since the Ron Spillman era! Got COMPUTERISED at last - DIGITISED? Taken the PLUNGE - BUT FILM STILL RULES !!!
co049
Member
Lincolnshire
Chris,
Pentax K1ii, K3, K-m & MX-1.
Pentax LX, MX, ME Super & MV.
"Old Skool" with the new!