Originally posted by intjonmiller Just to be clear, I'm not suggesting anything nearly as complicated or expensive as that Nikon 13 mm. Just aps-c/DA grade 10 to 12 mm.
Oh, I agree that an 8-10-12mm rectilinear for APS-C should be possible, since zooms that wide exist, and we'd expect that a corresponding prime should cost less to produce. So why hasn't it been done? My guess: Lensmakers just don't see a sufficient market. We can't force them to sell lenses that won't recoup their investment.
But maybe Pentax will surprise us. Maybe we'll see a DA*10/4. Whip out those sacrificial offerings, kids, and perform some rituals to propitiate the deities of applied optics and their bean-counting viziers.
When you wish upon a star, etc.