On Wed, 7 May 1997, CVNet wrote:
[...]
8-) minutes. They are taught, if coached properly, that they must
8-) not stare down the sights for more than three or four seconds
8-) at a time. They must look away for several seconds then sight
8-) again in order to avoid fatiguing the retina. The reason given
8-) is that prolonged fixed staring fatigues the retina and makes
8-) the brain 'shift' the position so the image falls on a different
[...]
Of course the only way the brain can shift a retinal image's position
is by shifting the retina itself - unless you believe in telekinesis.
I have no (other ;-) contribution than a question that might help
focussing:
Does this advice pertain to shooting with a telescopic visor also?
From what little experience I have with rifle shooting, I know it is
hard to keep the target and front (muzzle) and rear parts of
"ordinary" sights visually aligned for longer periods - the eye
seems to start drifting. I have quite a bit more experience with
shooting with (SLR) photocameras, and there this problem is much
less pronounced, esp. when helped by some fixation aid (e.g.
crosshairs) - situated at the same perceptual distance.
__oWo__
| RenE J. V. Bertin http://WWW.NeurEt.biol.ruu.nl
|
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| O] Neuro-ethologie, Vakgroep Vergelijkende Fysiologie [O
| O] Faculteit Biologie , Rijksuniversiteit Utrecht [O
| O] Padualaan 8, 3584 CH Utrecht [O
| O] Nederland [O
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