Yesterday at a bullseye match I had a strange experience (yes I know, I'm always having those, but this one is different) in .45 slow fire. When the shot broke, for a split-instant I saw the range in a photo negative. That is, the aiming blacks looked white, the papers looked black, and the rest of the world was a dark blur. Kind of a science fiction moment.
Has this happened to anybody else? What causes this? Staring too hard at the front sight? Concussion from 4.3 grains of Bullseye? Hope it's not a neurological symptom. It only happened two or three times with the .45 in slow fire, not in sustained fire, and not at all with the .22.
chrisatty-at-hotmail.com.43027.0
Seeing photo negative when .45 fires--is there a doctor in t
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Scott
Re: Seeing photo negative when .45 fires--is there a doctor
Might be an after-image effect, similar to the big blurry dark spot you see after looking at a bright point source of light in a dark room.
Think it's based on 'persistance of vision,' which is the effect that makes a series of still images beging to flow together and make us 'see' motion pictures. The fact that it happened several times, and at the moment of shot discharge is very interesting.
Personally I seldom see anything but the aiming mark and sights when shooting, and I couldn't tell you what else is happening visually outside that narrow tunnel of sight.
: Yesterday at a bullseye match I had a strange experience (yes I know, I'm always having those, but this one is different) in .45 slow fire. When the shot broke, for a split-instant I saw the range in a photo negative. That is, the aiming blacks looked white, the papers looked black, and the rest of the world was a dark blur. Kind of a science fiction moment.
: Has this happened to anybody else? What causes this? Staring too hard at the front sight? Concussion from 4.3 grains of Bullseye? Hope it's not a neurological symptom. It only happened two or three times with the .45 in slow fire, not in sustained fire, and not at all with the .22.
submoa-at-aol.com.43031.43027
Think it's based on 'persistance of vision,' which is the effect that makes a series of still images beging to flow together and make us 'see' motion pictures. The fact that it happened several times, and at the moment of shot discharge is very interesting.
Personally I seldom see anything but the aiming mark and sights when shooting, and I couldn't tell you what else is happening visually outside that narrow tunnel of sight.
: Yesterday at a bullseye match I had a strange experience (yes I know, I'm always having those, but this one is different) in .45 slow fire. When the shot broke, for a split-instant I saw the range in a photo negative. That is, the aiming blacks looked white, the papers looked black, and the rest of the world was a dark blur. Kind of a science fiction moment.
: Has this happened to anybody else? What causes this? Staring too hard at the front sight? Concussion from 4.3 grains of Bullseye? Hope it's not a neurological symptom. It only happened two or three times with the .45 in slow fire, not in sustained fire, and not at all with the .22.
submoa-at-aol.com.43031.43027
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Doofus
Re: Seeing photo negative when .45 fires--is there a doctor
This reminds me of the story of the man who says to his doctor" but doctor it only hurts when I breathe, skin dive, water-ski or ice-skate----what should I do????"
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Cecil
It's probably as simple as....
You're bliking as the shot is fired. Therefore when you blink, you have the "after-image" or reverse image effect. This is usually in conjuction with some flinching, however I have seen people do it without an apparent flinch, expecially on a shot or two in timed or rapid fire.
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Ross Mason
Re: Seeing photo negative when .45 fires--is there a doctor
The after image version is pretty close.
An interesting similar effect can be demonstrated by watching a car passing across your vision. If you watch on of the wheels and then flick your eyes in the direction of travel of the car, the wheel "appears to stop". It is almost as if you took a stop frame photograph. The wheel can look extraordinarily clear and sharp.
It could be because the visual system is continuosly taking "snapshots" by the process of slight shaking of the eye. These shakes are around 60 to 70 shakes per second. The eye needs to shake otherwise our vision just gets blurred out. We detect contrast edges very well and these edges are deetected by the cells in the eye as they shake because they are being exposed to the contrasty edge.
The sudden discharge of the gun could be "jolting" your visual system much like the sudden eye movement when watching the wheel.
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An interesting similar effect can be demonstrated by watching a car passing across your vision. If you watch on of the wheels and then flick your eyes in the direction of travel of the car, the wheel "appears to stop". It is almost as if you took a stop frame photograph. The wheel can look extraordinarily clear and sharp.
It could be because the visual system is continuosly taking "snapshots" by the process of slight shaking of the eye. These shakes are around 60 to 70 shakes per second. The eye needs to shake otherwise our vision just gets blurred out. We detect contrast edges very well and these edges are deetected by the cells in the eye as they shake because they are being exposed to the contrasty edge.
The sudden discharge of the gun could be "jolting" your visual system much like the sudden eye movement when watching the wheel.
.43077.43027
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Dr Gobin
Re: Seeing photo negative when .45 fires--is there a doctor
: Yesterday at a bullseye match I had a strange experience (yes I know, I'm always having those, but this one is different) in .45 slow fire. When the shot broke, for a split-instant I saw the range in a photo negative. That is, the aiming blacks looked white, the papers looked black, and the rest of the world was a dark blur. Kind of a science fiction moment.
: Has this happened to anybody else? What causes this? Staring too hard at the front sight? Concussion from 4.3 grains of Bullseye? Hope it's not a neurological symptom. It only happened two or three times with the .45 in slow fire, not in sustained fire, and not at all with the .22.
The mind is a beautifull thing. Just learn to ignore it, do you hear any voices when this happen?.
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: Has this happened to anybody else? What causes this? Staring too hard at the front sight? Concussion from 4.3 grains of Bullseye? Hope it's not a neurological symptom. It only happened two or three times with the .45 in slow fire, not in sustained fire, and not at all with the .22.
The mind is a beautifull thing. Just learn to ignore it, do you hear any voices when this happen?.
.43080.43027