Re: [photo-3d] DOF

["Dr. George A. Themelis" <drt-3d@xxxxxxx>]

Hello Tony,

You bring up an interesting issue by relating the resolution
with the viewing conditions.  

>My Zeiss lenses on my projector will only resolve 60 lpm - after all, 
>they are projector lenses.

It is interesting that you mention projection lenses as
an example of a high-resolution system.  Because in my
mind, projection is the least demanding viewing method
in terms of resolution.  A number of problems:  Distance
of viewer from screen is usually large, resulting in
a smaller image.  Lenticular screen is not smooth but
has ribs.  Two pairs of polarizing filters.  Questionable 
projector focusing.

I have slides which are definitely out of focus when
viewed in my Realist red button viewer, but appear
sharp under normal projection conditions.  I was 
thinking that if good projected slides was my main
goal, I should not be rejecting anything viewed in
a viewer.

George