Originally posted by dlacouture chhayanat : yes, the LL60 can be easily installed by the average Joe... Look for videos on YouTube...
And as for DA lenses, I find that my k20 exposes waaaaay better with my FA & DA lenses than with the original screen...
I don't know about the LL80, but I'd bet it's the same as the original screen...
Yes, I just replaced the LL-80 with the LL-60. All it has over the original screen is the grid lines that my crooked eyes need to keep things straight. If you buy your LL-60 from a reliable vendor (such as Japan Camera Store) there are all the tools and instructions included. It's very easy to do, and I can assure you that it is even more easy to get dust in the viewing system.
I have tested the LL-60, and the metering is spot on for every lens I have. M, A, FA, DA. Makes no difference with the newer lenses. I cannot say by my tests that it meters better with my DA lenses, but it definitely meters accurately. I used the histograms and there is almost no movement across the scale with varying apertures. Any difference I can put down to my own testing regimen, which is "point it, shoot it, look at histogram." This is not exactly a rigorous testing regimen, but I have no exposure errors.
This came to a head while I was attempting to use the AF 1.7X with the M 400/5.6. Nothing worked right except wide open. Now I can set any aperture, and get the correct shutter speed. Unfortunately, the green button does not work. The old lens is just too slow with the stop down mechanism for the brief period that the green button holds it open. I therefor use the other system, which matches my too many years with manual exposure cameras - scale exposure with the optical depth of field preview.