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Originally posted by JimOberg
Originally posted by poet1b
If the nitrogen tank operates like the light in your refrigerator, then who opened the door?
The tether break.
Originally posted by poet1b
Clearly you don't understand the concept of infinity.
Originally posted by poet1b
You have been taken in by a sales brochure.
Originally posted by poet1b
Just because there is an infinity symbol on the camera doesn't mean that the camera can focus into infinity.
Originally posted by poet1b
Distant objects appear too small to be in focus
Originally posted by poet1b
None of the stars in this video appear to be in focus.
Originally posted by poet1b
Here is a link to numerous stars to show what focus to a distant star looks more like, and none of them are truly in focus.
www.galacticimages.com...
Originally posted by poet1b
Objects whose focus do not change as you describe, you did not label.
Originally posted by poet1b
For the example you provided, which is probably your best example, the one you label 8 changes in direct relationship to the tether.
Originally posted by poet1b
I am not even sure what you claim to be a result of focus isn't actually a result of aperture adjustment.
Originally posted by poet1b
He mentions adjusting focus, but says nothing about having to focus to infinity. It sounds like the focus adjustment is considerably less than infinity.
Originally posted by poet1b
You grab a few snap shots with no time frame reference really doesn't mean much.
Originally posted by easynow
is this photography class 101 ?
start your own thread if you want to talk about cameras
Originally posted by mcrom901
thanks for all your hard work..... but what is the point
i strongly recommend you read.....
QED: The Strange Theory of Light and Matter by Richard Feynman
Light waves incident on a material induce small oscillations of polarisation in the individual atoms, causing each atom to radiate a weak secondary wave (in all directions like a dipole antenna). All of these waves add up to specular reflection (following Hero's equi-angular reflection law) and refraction. Light–matter interaction in terms of photons is a topic of quantum electrodynamics, and is described in detail by Richard Feynman in his popular book QED: The Strange Theory of Light and Matter.
en.wikipedia.org...
Originally posted by poet1b
You want to use the term practical infinity, go ahead, but it still means the same thing, as good as the lens is capable of focusing, which is not into infinity.
it has been proven
Originally posted by depthoffield
while that study on even Einstein or modern science failure to understand what the light or matter really is, that doesn't mean at all that your camera, your binocular, your telescope (which have optical and physical principles behind them and are made using calculations limited to our current knowledge) don't work or can't be understanded.
Originally posted by mcrom901
but we don't see any change in focus.........