"That's true but I thought the second lens was for 6,400dpi." That's what I know as well. Whatever, even switching the spacers in all positions I don't receive the sharpness of scaning straight on the glass (Film Area Guide though I don't use that thinny sqare thing,I find it useless as long as it doesn't keep the film flat and the scanner works without it)
I'm going to build a frame square shaped made of tough sponge having the ticknes exactly to fit the space between the two bodies of the scanner just to keep gently the photo frame flat on the glass. I will tell you the results !