<p>I'm not concerned about brightness, I just want a split-prism. I can easily imagine that they could be made cheaply, it's just ground glass, none of the technical sophistication of the Acute-Matte and other bright screens.<br>
I would buy a Haselblad original, I just can't find one at a sensible price in good condition.<br>
I am aware of the Kiev stuff and use a couple of their prisms, as one poster mentions these seem perfectly matched to Hasselblad bodies. I can only see one Kiev split focussing screen for sale at present and it is the screen itself alone, without the metal frame with its four little feet that hold the screen at the right position. I'm perfectly happy to trust Soviet engineering, just not so sure about Chinese!</p>