121–130 of 158 posts
Earlier quoted context omitted.
Off topic, but I think here's another image of the same airplane, also taken in Idaho: https://www.reddit.com/r/aviation/comments/6v62nl/plane_cros...
That turned out to be a fake. https://www.reddit.com/r/pics/comments/6v6y1k/
It's a shame that Lens Rentals had to suffer such material loss, but that report is absolute gold-plated first-hand evidence for my perennial debates with other photographers who insist that they don't need Solar protection for eclipses. "But I took a landscape shot at midday with the Sun in frame and it didn't melt my sensor". The difference being the length of exposure and the concentrations of energy.
Unfortunately for the lens, the 600mm lens's drop-in filter slot is behind the iris. So the camera was fine, the lens not so much.
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They have an in-house repair shop that dealt with most or all of it, and they charge the customer for the cost of the repair. From the comments the fact that they don't gouge on repairs is one reason some folks use them.
How do you fix a burnt cmos sensor? I feel like canon would charge you near enough the full replacement price.
I got lucky while testing my camera, which is mounted at prime focus in a refractor scope. I had it in Live View which meant the mirror was up, and I removed the solar filter for just a second. The camera said "error", turned off, I replaced the solar filter, and it was fine. Much longer, and I'd have had a burn. The telescope really collects and concentrates a ton of light.
According to the thread above, the telescopic lens is safer to use than a shorter one. Only here would someone give a mathematical proof!
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There kind of is, because it's darker when the sun is partially covered, so you'll use a larger aperture or longer exposure than you would normally. This is also why it's more dangerous to look at the sun during an eclipse than it is normally: your iris opens wider during an eclipse because it's not as bright.
I think you misunderstood his point, which was: there is no more energy coming from the sun at any given point during the eclipse than in a clear day. The sun isn't "sending" more energy on the path that aren't blocked, nor is the energy blocked going around the obstacle and concentrating on the areas still visibles. The reason for the damage is entirely due to the receiver behaving/being differently, be it your eyes…
Earlier quoted context omitted.
There kind of is, because it's darker when the sun is partially covered, so you'll use a larger aperture or longer exposure than you would normally. This is also why it's more dangerous to look at the sun during an eclipse than it is normally: your iris opens wider during an eclipse because it's not as bright.
I think you misunderstood his point, which was: there is no more energy coming from the sun at any given point during the eclipse than in a clear day. The sun isn't "sending" more energy on the path that aren't blocked, nor is the energy blocked going around the obstacle and concentrating on the areas still visibles. The reason for the damage is entirely due to the receiver behaving/being differently, be it your eyes…
Earlier quoted context omitted.
How do you fix a burnt cmos sensor? I feel like canon would charge you near enough the full replacement price.
A quick search online reveals plenty of sources of replacement sensors, at a fraction of the cost of the complete camera.
Someone posted a video of replacing the sensor on the old 7d (https://www.youtube.com/watch?v=udonzfGdW0Y)
Seems it eventually worked for him, after several attempts to adjust the position to get correct focus, but if you read the comments on the video there are many people who've messed up their camera trying to do this.
Might be fun to try though.
Earlier quoted context omitted.
I think you misunderstood his point, which was: there is no more energy coming from the sun at any given point during the eclipse than in a clear day. The sun isn't "sending" more energy on the path that aren't blocked, nor is the energy blocked going around the obstacle and concentrating on the areas still visibles. The reason for the damage is entirely due to the receiver behaving/being differently, be it your eyes…
"tricked into thinking it's dark" is kind of misleading, because it is in fact darker, but for some reason unknown to me there the energy from the sun harms you as much. I thought the issue with looking at its sun was its brightness, but i guess it isn't?
Earlier quoted context omitted.
I think you misunderstood his point, which was: there is no more energy coming from the sun at any given point during the eclipse than in a clear day. The sun isn't "sending" more energy on the path that aren't blocked, nor is the energy blocked going around the obstacle and concentrating on the areas still visibles. The reason for the damage is entirely due to the receiver behaving/being differently, be it your eyes…
"tricked into thinking it's dark" is kind of misleading, because it is in fact darker, but for some reason unknown to me there the energy from the sun harms you as much. I thought the issue with looking at its sun was its brightness, but i guess it isn't?
This is also why even relativlity low intensity infrared lasers are so dangerous.