Are primes brighter and sharper than wide open zooms
View Single Post
October 2nd 05, 11:19 PM
external usenet poster
On Wed, 28 Sep 2005 22:29:43 -0700, "Brion K. Lienhart"
Nope. F:2.8 is solely based on the size of the lens. Obsidian is glass,
you can grind it into a lens shape, but if you use it as an element in a
lens, you're going to get some reallllllly slow shutter speeds. Of
course that's an extreme case, the difference between plain old glass
glass, and exotic flouro-silicates is only a few fractions of a percent.
So what was your point in bringing up a special case ulikely
to be implemented?
No, look up "T numbers", they are not a special case for many.
Paul Repacholi 1 Crescent Rd.,
+61 (08) 9257-1001 Kalamunda.
West Australia 6076
comp.os.vms,- The Older, Grumpier Slashdot
Raw, Cooked or Well-done, it's all half baked.
EPIC, The Architecture of the future, always has been, always will be.