Archived posting to the Leica Users Group, 2002/03/06
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]I wear a plus 4 correction for far vision. When I put on my glasses, objects not only appear a little larger but also a little closer. For example, when I look down at my foot and then put glasses on, my leg looks a little stouter and a little shorter. Also, as you say, it doesn't seem to be simply a matter of diopters. If I leave plus 2 or 3 diopter correction on my eyepiece and then look through that with my eyeglasses, everything is hopelessly blurred. I have to remove either the diopter eyepiece or my glasses. But I would still love to know the answer to B. D.'s question. Probably has something to do with focal length of the magnifying eyepiece (wild guess). Possibly related thought: isn't it true that the projected image from a 90mm Colorplan lens covers a wider angle than you would see from the same distance, if you put a 90mm lens on your SLR and looked at the screen? I haven't actually tested this. Julian - ----- Original Message ----- From: "John Black" <jblack@ambio.net> To: <leica-users@mejac.palo-alto.ca.us> Sent: Wednesday, March 06, 2002 1:55 PM Subject: Re: [Leica] Optical Question As I understand it, diopter correction is not simple magnification but "correction". I use a +2 diopter correction lens on my M cameras and there is no magnification of the image. If there was magnification, our glasses would make the world look VERY strange!! JB - ----- Original Message ----- From: "B. D. Colen" <bdcolen@earthlink.net> To: <leica-users@mejac.palo-alto.ca.us> Sent: Wednesday, March 06, 2002 1:17 PM Subject: [Leica] Optical Question > Okay, all you Optigods, a question for you: > > If a + diopter is a magnifier, wouldn't a +1.25 diopter do the same thing > that the new $229 Leica M 1.25 Viefinder magnifier does - for $73, without > protruding from the back of the camera, and without the really cute little > chain and carrying case? > > I am, of course, being a bit facetious - but the question is absolutely > serious. If they aren't the same thing, what is different about them in > terms of function? > > Thanks > > B. D. > > -----Original Message----- > From: owner-leica-users@mejac.palo-alto.ca.us > [mailto:owner-leica-users@mejac.palo-alto.ca.us]On Behalf Of Photo > Phreak > Sent: Wednesday, March 06, 2002 1:26 PM > To: leica-users@mejac.palo-alto.ca.us > Cc: shutterbug@iinet.net.au > Subject: Re: [Leica] Hypothetical..... > > > > --- Karina Klaas <shutterbug@iinet.net.au> wrote: > > > > What would happen and how would you feel if Leica went > > bankrupt tomorrow? > > > > Do you have everything you need and would the value of > > what you have > > increase/decrease? > > > > This is a hypothetical...not intended to create > > chaos/rumours. > > > > Judging by the intense following, I would think this > > would not pass without > > a monumental wake..... > > > > Karina > ============================================================ > > I am sure that the finacial gnomes would do jsut as has > been done befor. They would sell the name for some > outrageous amount and live happily ever after.......... > > __________________________________________________ > Do You Yahoo!? > Try FREE Yahoo! Mail - the world's greatest free email! > http://mail.yahoo.com/ > -- > To unsubscribe, see http://mejac.palo-alto.ca.us/leica-users/unsub.html > > -- > To unsubscribe, see http://mejac.palo-alto.ca.us/leica-users/unsub.html > - -- To unsubscribe, see http://mejac.palo-alto.ca.us/leica-users/unsub.html - -- To unsubscribe, see http://mejac.palo-alto.ca.us/leica-users/unsub.html