It’s our body’s way of protecting our eyes from damage. It’s like how you start blinking when a bit of dust or sand enters your eyes. That means it happens by itself, without you having to think about it to make it happen. With the camera on the unfiltered eye, and the other eye filtered I was able to successfully aim and photograph the partial phase without further pain or injury.ĭuring totality, I removed the filter and shot the corona with the same lens.Light from the Sun is very powerful and looking straight at it by accident will usually make you blink and close your eyes involuntarily. While practicing, I made the mistake of opening my other eye to check the larger view which was not a pleasant experience.įor use aboard ship, I punched one eye out of a cardboard pair of eclipse watching glasses that happened to be made with the same filter material I had on the lens. However with that filter in place, the whole frame was dead black when pointed anywhere in the sky that didn't include the sun. I had a Thousand Oaks Optical black polymer solar filter on the front of the lens, and it was fun to see the disk of the sun with decent magnification. NASA also has a good resource page related to eclipse photography.ĭuring the 2006 eclipse I was very close to the center of the path of totality on a yacht in the Mediterranean, attempting photography with a hand-held DSLR with a 500mm lens.
To avoid damage, a solar filter should be used in front of the lens. Clearly, significant damage to your eye and/or the camera is possible. If the mirror were locked up, then the camera would be projecting a nearly in focus image of the sun onto the shutter curtain, and eventually onto the film or sensor. Photography of the eclipse with a DSLR requires that you look through the camera. So it would be a good idea, especially if the eclipse is not near local sunrise or sunset, to be aware of how long totality is expected to last, and be ready to look away as soon as you glimpse the "diamond ring" effect where the disk of the sun first becomes visible through a notch on the moon's limb. Failure to use appropriate filtration may result in permanent eye damage or blindness! Do not attempt to observe the partial or annular phases of any eclipse with the naked eye.
Even when 99% of the Sun's surface is obscured during the partial phases of a total eclipse, the remaining photospheric crescent is intensely bright and cannot be viewed safely without eye protection. Partial eclipses, annular eclipses, and the partial phases of total eclipses are never safe to watch without taking special precautions. The Sun can be viewed safely with the naked eye only during the few brief seconds or minutes of a total solar eclipse. NASA is a good source of information about eclipses, including safe viewing and photography techniques. So during a total eclipse, but only during totality, it is completely safe to look at the corona with naked eyes. The amount of light emitted by the solar corona is far too little to do damage. * - Natural is here not in the sense of "everything natural is good", but in the sense of "it is reasonable to assume there would be an evolutive advantage from it". Then: If not, is it possible with simple willpower, without special training or medication, to force oneself to ignore the pain for a long enough time to cause such damage?Īlso: Is there a difference in this between adults, children and babies?Īnd as a bonus, are there any special environmental situations where this does not apply? For example: sunset, sunrise, solar eclipse, major fog, underwater, or light filtered through something else. So the question is: Is possible for someone to naturally stare at the sun for an amount of time required for significant permanent eye damage, or whether the pain will become too much significantly sooner than any such damage would happen? That pain seems like a very natural * defense mechanism against eye damage.Īlso, I guess technically even a very quick glance at the sun does cause temporary eye damage, as there is a visible distortion spot in sight for a short while afterwards. However, staring at the sun also hurts very quickly. Of course, I think I can safely assume if an eye is left pointing directly towards sun for a long period of time it does get major damage.
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