I understand his concern. When out of focus, the screen is still too clear, and the scene is not broken up enough. Ideally, the viewing screen would break up into fragments sooner, making the out-of-focus area quite evident...
That's why I prefer a split-image center circle, and a microprism collar outside that. If I have a subject without any edges I can split, the microprism helps. Plain ground glass is lost on my eyes. I can't readily find the center easily, by focusing back and forth for the best and sharpest image. It's always 'best guess' which is not exactly encouraging. keith whaley Heiko Hamann wrote: > > Hi Alin, > > on 26 Nov 02 you wrote in pentax.list: > > > Heiko, I'm not sure I can follow you. Do you complain of 3/5n > > screens having a too fine texture? What's that bad with it - do you > > think it make them too dark? > > No, it's not too dark. The texture is too fine. As it nearly looks like > glass, I find it quite difficult to find the optimal focus point. > Instead of certain focus point there is a range in which the picture > seems to be sharp. How can I explain that? If you focus your lens, then > you will notice three points: > > - the transition from completely unsharp to sharp (A) > - the transition from sharp to completely unsharp (B) > - exactly in the middle of this range lies the optimal focus point > > My point is, that the range between (A) and (B) is bigger in case of my > MZ-5n than in case of my LX. This is because of the texture on the MZ-5n > screen is much finer than that of the LX. > > > I believe that changing the texture density also affects the screen > > transparency and throws off the meter. > > This might be the reason for the screens having identical textures. > > > Anyway, I'm glad to hear Pentax (Germany, at least) offers a grid > > screen for 5n. I always wanted one. > > They don't offer this in an official ad or on their webpage. I've read > it in a book and asked them (they confirmed that). Maybe you should > simply ask your Pentax office. There are five or six screens, iirc. > > Regards, Heiko
