Leica M5 - Known Issues

Known Issues

• Any precision mechanical camera like the M5 needs expert calibration and maintenance. The servicing of an M5 to factory specifications will cost typically from 200-400 USD. This is also the case for cameras that have seen little or no use. It is not advisable to use an M5 before a qualified CLA, as the lubricants may have hardened and damage can result. It is no longer the custom of even reputed Leica retailers to have their equipment thoroughly checked by a technician before sales, even if assertions to the contrary are made. A critical overview of CLA issues can be found here:
• Serial numbers above 134xxxx are usually considered more reliable as earlier problems in the production line were resolved by then (i.e. shutter speed dial clutch which was made more robust, preventing unwanted slipping of the setting).
• The CdS cell is only accurate when the camera is held horizontally; although the difference is reported to be inconsequential.
• The meter generally has been observed to have up to a 1/2 stop deviation varying over the spectrum of its performance specification (both in terms of luminosity and chromatic response).
• The exposure meter's mechanical arm is retracted by depressing the shutter release button. As a result, the exposure meter will not produce a usable reading if the shutter release button is under any pressure.
• Issues surrounding the fragility of the CdS cell affect many extant M5s; it is still available as a replacement part.
• In Leica M series cameras that have seen little use (i.e. those in pristine condition), the spring securing the lensmount bayonet lock may be weak or have its motion impaired. This can create the risk of a lens disengaging and dropping from the camera body while focusing.
• The M5 is covered in vulcanite, which can become brittle with age, and is subject to peeling and cracking. The M5 can be recovered with a variety of comparable materials such as Griptac.
• The 0.72 viewfinder magnification has the consequence that the 35mm framelines are not easily visible for users wearing eyeglasses; an optional eyepiece diopter (available from -3 to +3, or without lens for fitting of a custom lens) may be screwed into the viewfinder to remedy this. The astigmatic custom eyepiece diopter is no longer offered by Leica.
• The cloth shutter susceptible to getting pinholes burned in it by an uncapped lens in bright sunlight.
• The camera should always be stored uncocked. The tensions on the horizontal cloth shutter may otherwise damage it.