- Joined
- Oct 7, 1998
- Messages
- 1,838
Well, I must confess that I have never stomped on or dropped a Photon or any other light. So, I will take you guys' word for what happens.
I do have some pertinent information about Photons and ASP's, however, having gone through about 300 or 400 Photons in the past year, and four ASP's.
First of all, Photons will leak water. The problem is usually that the batteries start to corrode. This happened to the Photon my friend's golden retriever wears on his collar, when he went swimming.
This is a treatable condition (although I will welcome the waterproof Photon version due out next year). Get some silicon grease with Teflon (available at pool / spa places), and smear it on the batteries and leads (wires) of the LED. This will make the Photon handle water with more aplomb, although eventual premature replacement of the battery will probably be necessary. Tuf-Cloth works also, but not as well as the grease.
I cannot comment on water resistance of ASP's.
There is a big problem with the ASP or any other turquoise / blue light, however. It is called chromatic aberration. This simply means that your eye focuses blue light in front of the retina. This blurs the image.
This is not a problem for close up work, such as map reading, as your eyes can compensate.
However, you will not be able to see detail beyond 5 or 6 feet with any blue or turquoise or Photon's 'white' light (which is supposed to be full spectrum, but is heavily weighted towards the blue end of the spectrum). You will NOT be able to read letters (type), or see details of objects. Things will be REALLY blurred. This could present obvious complications.
While a red or orange light doesn't appear as bright as most blue or turquoise or white lights, the red illumination provides much better definition and resolution of detail, thus eliminating the 'advantage' of the shorter wavelength (bluish) lights.
Short wavelength lights are best for marking things. Blue light is unusual at night, so it really stands out. I suspect that under the wrong conditions, it would be a bullet magnet.
Best colors are: red / orange / yellow. You can see best with these.
Green is good also. Long enough wavelength to minimize chromatic aberration. Is the wavelength to which the retina is most sensitive under mesopic (low light) and scotopic (REALLY low light) conditions, and thus will appear brighter than other wavelengths. Also longest lasting (about 7 days and nights). Leads gold plated also.
Want to preserve your night vision? Forget it with any of these lights. All colors are much too bright to preserve your night vision. If you look at a light, and you are dazzled ('spots' in front of your eyes, especially with eyes open), your night vision just went bye-bye, as the spots are bleached rhodopsin (visual purple). Your body will of course regenerate the rhodopsin, but just hope you don't have to lign up sights on something nasty until your body has a chance to do so. It can take 10 to 15 min. for regeneration.
I hope this helps. Comments, questions or criticisms, as always, welcomed. Walt
I do have some pertinent information about Photons and ASP's, however, having gone through about 300 or 400 Photons in the past year, and four ASP's.
First of all, Photons will leak water. The problem is usually that the batteries start to corrode. This happened to the Photon my friend's golden retriever wears on his collar, when he went swimming.
This is a treatable condition (although I will welcome the waterproof Photon version due out next year). Get some silicon grease with Teflon (available at pool / spa places), and smear it on the batteries and leads (wires) of the LED. This will make the Photon handle water with more aplomb, although eventual premature replacement of the battery will probably be necessary. Tuf-Cloth works also, but not as well as the grease.
I cannot comment on water resistance of ASP's.
There is a big problem with the ASP or any other turquoise / blue light, however. It is called chromatic aberration. This simply means that your eye focuses blue light in front of the retina. This blurs the image.
This is not a problem for close up work, such as map reading, as your eyes can compensate.
However, you will not be able to see detail beyond 5 or 6 feet with any blue or turquoise or Photon's 'white' light (which is supposed to be full spectrum, but is heavily weighted towards the blue end of the spectrum). You will NOT be able to read letters (type), or see details of objects. Things will be REALLY blurred. This could present obvious complications.
While a red or orange light doesn't appear as bright as most blue or turquoise or white lights, the red illumination provides much better definition and resolution of detail, thus eliminating the 'advantage' of the shorter wavelength (bluish) lights.
Short wavelength lights are best for marking things. Blue light is unusual at night, so it really stands out. I suspect that under the wrong conditions, it would be a bullet magnet.
Best colors are: red / orange / yellow. You can see best with these.
Green is good also. Long enough wavelength to minimize chromatic aberration. Is the wavelength to which the retina is most sensitive under mesopic (low light) and scotopic (REALLY low light) conditions, and thus will appear brighter than other wavelengths. Also longest lasting (about 7 days and nights). Leads gold plated also.
Want to preserve your night vision? Forget it with any of these lights. All colors are much too bright to preserve your night vision. If you look at a light, and you are dazzled ('spots' in front of your eyes, especially with eyes open), your night vision just went bye-bye, as the spots are bleached rhodopsin (visual purple). Your body will of course regenerate the rhodopsin, but just hope you don't have to lign up sights on something nasty until your body has a chance to do so. It can take 10 to 15 min. for regeneration.
I hope this helps. Comments, questions or criticisms, as always, welcomed. Walt