Archived posting to the Leica Users Group, 2006/06/15
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]Frank, You can buy a reducing lens for the RD-1 making it's effective magnification less but will let you see more frame lines. It works much like the 1.25 for the Leica's and also has a built in diopter so can adjust for your vision. The same company that Sonny has been getting his Natura 1600 sells them for a pretty reasonable price. http://www.unicircuits.com/shop/ It should make your vision through the RD-1 much better. Don don.dory@gmail.com On 6/15/06, Frank Dernie <Frank.Dernie@btinternet.com> wrote: > > Hi Frank, > If you look at a picture of the Epson RD1, or the CV similar Bessa > you will see how big the front viewfinder lens is. With a lens of > this size I can not see the framelines for the 42mm equivalent FOV > realised by the 28mm lens on this camera. This camera has an even > smaller sensor than that of the digital M. The widest view I can see > through this viewfinder with spectacles is the 53mm equivalent (for > the 35mm lens). Any framelines wider than the equivalent of about > 50mm would be bigger than the view through a viewfinder this size for > spectacled users. The alternatives are:- > 1. use a supplementary viewfinder for all lenses with an angle of > view wider than about 50mm (as the 0,92 mag M3 finder required) > 2. Make a (much) bigger viewfinder and the big top plate to go with > it - very expensive. > 3. use a magnification suitable for the FOV of lenses your customers > are likely to use most. > Leica seem to have adopted solution 3. I personally consider this too > be the most sensible option. > Frank > > On 15 Jun, 2006, at 13:55, Frank Filippone wrote: > > > I do not understand this part of your comment.... the > > viewfinder can only be used with 50ish mm lenses and > > longer......Can you explain your thinking? > > > > In a RF camera, since you never look through the lens, but rather > > at a set of frame lines in the VF, it makes no difference what the > > FL is. Your magnification of the VF allows you to keep both eyes > > open during shooting with the RF lines effectively superimposed on > > the scene. Even with a 180mm lens or a 24mm lens, the effect is > > the same. ( yes, the image gets pretty hard to frame correctly at > > these extremes, but it still allows the superimposition to work, > > for you to see the entire scene and pick out areas that are outside > > your lenses view: A the trick that an SLR can never accomplish. > > > > Comment about the WA lenses is understood, and I agree with you. > > However there is no fix to this problem for film cameras except a > > smaller mag VF. On the Digi-M, because of the smaller sensor, will > > be effectively negated. > > > > Frank Filippone > > red735i@earthlink.net > > > > > > You are right Frank for 2 eyes we need nearly 1x mag but then the > > viewfinder can only be used with 50ish mm lenses and longer. The > > worst part of my Epson RD1 is the 1x viewfinder, I can't see the > > whole 28mm (equiv 42mm field of view) frame with my glasses on. Most > > of the time I have to use an additional viewfinder. Mind you I expect > > with the small rangefinder baseline the higher mag viewfinder is > > necessary for focussing precision. > > > > Frank > > > > > > > > _______________________________________________ > > 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 >