My medium is 35mm slide film. I currently use the Cokin A, 2 stop GND, which has a fairly hard transition. I want a softer transition. 2 stops usually works well for my taste and journeys. I've settle on the Singh-Ray GND. As all know, comes in soft or hard transition. I will Only be using this on my Zeiss 35mm which is only a 58mm thread span. The "effective span" for the actual front element is about 48mm. The Singh-Ray GND area is 84x120mm. My concern - before I buy the Singh-Ray (which I cannot return): With the soft transion, will there be any actual graduation or is the effective span of the front element much to small relative to the much larger SR filter. I am wondering if I should get the hard transition, on the theory that it would perform as a "soft" since the graduation is being scaled to a smaller thread. If I could get my hands on one, great, but I can't. Thanks. Hope this is clear.