Reader's Comments - Index of - Free

photo.net optics section
Home : Learn : One Section
Optics
Maintained by David Jacobson
Sign in | Search:
And still they come and go: and this is all I know--
That from the gloom I watch an endless picture-show,
Where wild or listless faces flicker on their way,
With glad or grievous hearts I'll never understand
Because Time spins so fast, and they've no time to stay
Beyond the moment's gesture of a lifted hand.
And still, between the shadow and the blinding flame,
The brave despair of men flings onward, ever the same
As in those doom-lit years that wait them, and have been...
And life is just the picture dancing on a screen.
-- "Picture-Show", Siegfried Sassoon, 1920
● Lens FAQ
● Lens Tutorial
● USAF 1951 lens test chart. Note this a reverse engineered unofficial version. It is easily scalable
to any size. See the notes in the file itself.
● Equivalent Lens Focal Lengths For Different Film Sizes
http://www.photo.net/learn/optics/ (1 of 2) [5/15/2002 7:16:06 PM]