Chris,
Thanks for the edifying trip into AR coating technology. Very interesting.
Art
[EMAIL PROTECTED] wrote:
>>To my (admittedly limited) knowledge, I believe AR coatings
>>need to be on the front/rear surfaces of the lens to do much
>>of their work. Some lenses also have internal lens gro
Laurie Solomon wrote:
> Maybe my math is bad; but if it has a native resolution of 2400 ppi/dpi
> scanning 1" film, then my math says it will have a native resolution
> scanning a 5 inch subject which is much lower than 300 ppi/dpi
> independent of the light path factors(e.g., around 75 ppi/dpi)
That's what I thought also... although I'm a bit late on this (again!)
Art
[EMAIL PROTECTED] wrote:
> Lens coatings MUST be on the outside surface of the lens or else they
> don't work. Pretty much, they would be on every glass-air interface.
>
> Mr. Bill
>
> Laurie Solomon wrote:
>
>>Without t
OK, I give up, I'm beginning to sound like an echo in here...
You're just one step (or more) ahead on me each time I post... I best
read your replies before answering ;-)
Art
[EMAIL PROTECTED] wrote:
> If the optical resolution is variable and YES there are scanners that
> can do it (they have
To my (admittedly limited) knowledge, I believe AR coatings need to be
on the front/rear surfaces of the lens to do much of their work. Some
lenses also have internal lens groups AR coated, but I do not believe it
can be sandwiched, because as I understand the optics, it is the glass
to air surfac
