Just thought I'd share information about the focusing screen I bought for my 6 x 9 Horseman VH. I bought it from Bill Maxwell at Maxwell Precision Optics, (40 4) 244-0095. He makes focusing screens for all size cameras. His screens are w onderful and very reasonably priced, all considering. All Bill's screens are cu stom fitted to your camera, lenses and shooting style. They're very fine groove d fresnels, that are extremely bright and contrasty. When I focus using my 4x S chneider loupe, the fresnel lines are barely noticeable because they're so fine. Bill truly understands optics and can explain much better than I can, but, in short, in an ideal world, we would have separate fresnels for each lens. I comp romised by getting two: one for my 58 mm XL and 75 mm, and one for my 135 mm and 240 mm lenses. The one that's optimized for the longer lenses also works very well with the 75 mm. The screen for the 58 mm is amazing. No light fall off in the corners. It's so bright I can focus with just the pop up focusing hood. I 've shown them to a guy who owns the local camera shop who is a fanatic (he owns about 30 cameras) and he says they're nicer than anything he's seen including t he Boss screen and the various bright screens. Bill Maxwell also designs screen s for a few very high priced large format camera manufacturers. My screens, fit ted to the backs, including shipping were about $150 each. Considering the many phone calls, patient explanations, personal service, and great product, I consi der it a bargain. After looking for the perfect screen for the last 4 months or so, I've found it (or them since I ended up getting two).