Archived posting to the Leica Users Group, 2009/07/06
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]Understand that the LTM cameras with a built in rangefinder have a separate window for the rangefinder and viewfinder. It it the rangefinder window that has a diopter adjustment, not the viewfinder. They pretty much had to put the diopter adjustment on the rangefinder because it magnifies 1.5x it's really a focus adjustment for what can be looked at as a low magnification telescope. Note that the IIIg viewfinder is 0.7 magnification and of course has illuminated lines to indicate both the 50mm and 90mm field of view with parallax correction. If you don't use eyeglasses and can see the entire field of view through the finder it's close enough to serve for use with a 35mm lens. The M3 was introduced in 1954 and the IIIg in 1957. As much as anything I think the IIIg was in response to photographers that liked the smaller size of the LTM models and that felt the price of the M3 was too dear. When Leica designed the finder for the M2 they reduced the cost significantly and that pretty much took away the cost reason and most photographers realized the M was a better solution thus the IIIg was discontinued. James Laird wrote: > Makes you wonder why they left it off the M series. > > Jim > > On Mon, Jul 6, 2009 at 11:43 AM, Douglas Sharp<douglas.sharp at gmx.de> > wrote: > >> Hi Jim, >> >> there's a little lever under the rewind knob to adjust the diopter >> setting, >> on my IIIg it's a little loose and easily knocked of setting. >> I think the range must be about -2 to +2 >> >> Cheers >> Douglas >> >> James Laird wrote: >> >>> I read somewhere the IIIg viewfinder has built-in diopter adjustment. >>> Is this true? >>> >>> Jim >>>