Leica
Leica Correction Lens II -M, -1.0 dpt
Correction lens for M-series cameras
If you are near-sighted and need to change the optics of the M10's 0.73x optical viewfinder, this Correction Lens II from Leica will provide a -1.0 dioptric adjustment. This will help shooters more comfortably use the camera, in some instances permitting use without the need for glasses.