Aren't you going to be shooting through multiple filters anyway otherwise you'll experience massive blowout.:umm: That sun is pretty hot.
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07-02-2007, 08:11 AM
Aren't you going to be shooting through multiple filters anyway otherwise you'll experience massive blowout.:umm: That sun is pretty hot.
07-02-2007, 02:26 PM
Hi,Originally Posted by blownapartstudios
I would angle those filters!
Stephen
07-02-2007, 03:16 PM
Shooting directly at the sun is bad for cameras? Weird...
...and here I was thinking Danny Boyle's new movie was made entirely with in-camera effects
07-02-2007, 05:05 PM
LOL
Yeah Stephen....
Doesn't that have something to do with the angles of reflection and incidinces? Oh wait, it's the other way around. lol
Seriously, if you are going to be shooting the sun, might be best to talk to these people. They been at this for awhile.
http://www.thousandoaksoptical.com/
07-02-2007, 06:29 PM
Hey chuck,
Good link as usual, I thought I could just shoot through my welding helmet. Why is the sun so green. I don't get it.
07-02-2007, 08:04 PM
Hi Steven,
Not quite sure what you mean by green. Are you talking about how it looks thru your welding helmet?
Chuck
PS.
If you are talking about you arc welding helmet it's because the narrow band pass filter seems to be set around 540 angstrom right smack in the middle of the green spectrum where our visual acuity is most sensitive.
3. The arc welding viewing system of claim 2 wherein the preselected band has a 100.degree. A bandwidth centered substantially around 5370.degree. A.
http://en.wikipedia.org/wiki/Visible_light
07-02-2007, 08:25 PM
Sorry!
Welding helmets use a super dark green lens and are a good way to view the sun, but its green. Welding puts off similar light and sun burns the crap out of your arms. I have a bad habit of welding in a tee-shirt.....Dumb
07-02-2007, 08:32 PM
Looks like we posted about the same time. lol
See my PS. in my response to your post.
07-02-2007, 08:53 PM
word!
07-05-2007, 07:36 AM
The only time I have damaged a ccd was using a low cost single chip minicam for a time lapse shot (to timelapse video recorder) in Istanbul.
I believe the problem arose as I used a very wide 3mm lens, so the sun was focused onto a very small part of the ccd. Perhaps just a few pixels.
The sun burnt and traced a pinkish coloured arc across the chip.
3 chip cameras spread the energy across three chips and I haven't heard of ccd damage by sun, but a HD camera block was damaged by a high power laser show in London a few years ago.
Remember that dialing in high shutter speeds does not reduce energy hitting the chip. NDs and iris should be used to get your exposure in the ball park.
It would be interesting to see what would happen to a single chip large format camera with ultrawide lens if pointed at the sun for an hour or so and exposure was aimed at capturing ambient light level of the foreground.
As a guide, last night I tried a big glowing orb peaking through clouds.
It was an aerial shot using a Cinelfex V14 (with HDC950) 400mm, ND 1/64, F11ish -3db 1000 sec shutter at 20 min before sunset and it was not enough to make the sun orange. Would have worked ten minutes later. Anyway the more interesting shot and the one the client paid for, was the castle the sun was illuminating:)
Mike Brennan
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