#1. "RE: D300 and Katz Eye Optics" | In response to Reply # 0rofr Registered since 10th Jan 2008Sun 17-Feb-08 08:01 PM | edited Sun 17-Feb-08 08:02 PM by rofr
I had one in the D200 and put it in the D300 when I upgraded recently. Works just as good from what I can tell. Install on the D300 was a little different than the D200 but still didn't take much time. I rubber coated a pair of tweezers to grip the focusing screen. I use my wife's cuticle trimmer to release the retaining wire (her tweezers has a nice little v shaped notch that help grab the retaining wire) and a small screwdriver to re-insert the retaining wire. Cover the mirror as it says in the instructions. Read the instructions a few times. Get a good light..again, I stole equipment from my wife...I used her goose neck fluorescent lamp. I also used a pair of cheap reading glasses to magnify things a little bit.
Try to keep the wire under control as it is released...avoid letting it spring forward. If it does spring forward and if, as a result, the retaining wire pops out of its pivot points, keep the focusing screen in the camera (the old one preferably) and re-insert the ends into the holes using the tweezer. In the event the retaining wire does jump out of the pivot points, keeping the focusing screen in the camera while reinstalling the retaining wire helps to protect the real important stuff that lies behind the focusing screen.
I've swapped twice in the D200 and once in the D300....so I'm not a pro and a pro might have something to add or might tell me if I've given any bad advice.... but so far, this process has worked for me.