ssmc
Well-known
Hi all,
I recently scored a virtually mint black/chrome LTM 50/1.4 😎 The only thing "wrong" with it is that there's a little play in the focusing.
I assume (maybe naively - please correct me if I'm wrong) that this is due to the lubricant drying out over the last 55 years or so, leaving some clearance between the inner and outer threads (at least that's how I imagine it). Is this the usual cause of this problem?
My question is, how much disassembly is required to just clean and re-grease the focusing mechanism, and what tools do I need? Do I need a lens spanner or will correctly-sized screwdrivers be enough? How difficult/risky is it to try to disassemble a lens of this age? I don't need access to the innards of the optical cell; it's clean and clear apart from a small amount of dust and the diaphragm works smoothly.
Apologies if this has been covered elsewhere
TIA,
Scott
I recently scored a virtually mint black/chrome LTM 50/1.4 😎 The only thing "wrong" with it is that there's a little play in the focusing.
I assume (maybe naively - please correct me if I'm wrong) that this is due to the lubricant drying out over the last 55 years or so, leaving some clearance between the inner and outer threads (at least that's how I imagine it). Is this the usual cause of this problem?
My question is, how much disassembly is required to just clean and re-grease the focusing mechanism, and what tools do I need? Do I need a lens spanner or will correctly-sized screwdrivers be enough? How difficult/risky is it to try to disassemble a lens of this age? I don't need access to the innards of the optical cell; it's clean and clear apart from a small amount of dust and the diaphragm works smoothly.
Apologies if this has been covered elsewhere
TIA,
Scott