Quote:
On 2001-11-15 07:46, GrapesOfWrath wrote:
Up till now, I don't think the numbers have anything to do with rods or cones. So far, the calculations have been just how much light is actually entering the eye, not how much the receptors are excited.
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Sure they do. The calculations were based on the dimmest visible star being 6th magnitude. I doubt that such a dim star is visible on the fovea. Thus, the resulting photons/sec number would not apply to central vision.
By the way, it's cones for day/color/high res/central vision, rods for night/peripheral vision. I've managed to (re)learn something today... [img]/phpBB/images/smiles/icon_biggrin.gif[/img]