Archived posting to the Leica Users Group, 2009/07/08
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]Sorry, an OKBZO? Jim On Wed, Jul 8, 2009 at 1:35 PM, James Laird<digiratidoc at gmail.com> wrote: > Anyone know where to find a picture or diagram of an OKVZO? > > Jim > > On Wed, Jul 8, 2009 at 2:26 AM, Douglas Sharp<douglas.sharp at gmx.de> > wrote: >> Jim, >> >> I just looked in The Leica Collectors Guide (Laney) >> >> There was one for near or short sightedness - OKBZO (1951) >> and one for astigmatism OKVCO (1960) >> >> Cheers >> Douglas >> >> James Laird wrote: >>> >>> Did Leica make diopters for the viewfinder of the IIIg? >>> >>> Jim >>> >>> On Tue, Jul 7, 2009 at 1:31 AM, Dennis<dennis at hale-pohaku.net> wrote: >>> >>>> >>>> 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 >>>>>>> >>>>>>> >>>> >>>> _______________________________________________ >>>> Leica Users Group. >>>> See http://leica-users.org/mailman/listinfo/lug for more information >>>> >>>> >>> >>> _______________________________________________ >>> Leica Users Group. >>> See http://leica-users.org/mailman/listinfo/lug for more information >>> >> >> >> _______________________________________________ >> Leica Users Group. >> See http://leica-users.org/mailman/listinfo/lug for more information >> >