View Full Version : Can one damage the HD100 with the sun?


Robert Schaller
June 23rd, 2006, 05:05 PM
This is perhaps an odd question, and maybe not one that is specific to this camera:

I am shooting B-roll for a film that needs images of the sun, and was this morning shooting the sun through leaves blowing in the wind. I noticed that when I do everything I can to reduce light -- stop down, ND2, shutter speed 1/10000 -- I could see a strange irregularity just before closing the aperture completely. Alarmingly, it looks rather like what film looks like as it melts when kept in front of the projector lamp for too long. This somewhat panicked me:

Am I damaging the chips or some other optical element by shooting directly into the sun? Is it possible to damage a video camera in general, or this camera in particular, by doing this? Coming from film, where this is not possible, it is not something I ever considered.

Any information on this score would be appreciated -- especially the injunction that I'm being needlessly paranoid!

Tom Chaney
June 24th, 2006, 06:27 AM
Good question Robert,

I too have wondered the same thing.

I'm sure some of the Pros here will help us out. You're going to love this place. Lots of info.

By the way paranoid is sometimes a good thing!

Welcome aboard,

Tom

Carl Martin
June 24th, 2006, 06:33 AM
This is perhaps an odd question, and maybe not one that is specific to this camera:

I am shooting B-roll for a film that needs images of the sun, and was this morning shooting the sun through leaves blowing in the wind. I noticed that when I do everything I can to reduce light -- stop down, ND2, shutter speed 1/10000 -- I could see a strange irregularity just before closing the aperture completely. Alarmingly, it looks rather like what film looks like as it melts when kept in front of the projector lamp for too long. This somewhat panicked me:

Am I damaging the chips or some other optical element by shooting directly into the sun? Is it possible to damage a video camera in general, or this camera in particular, by doing this? Coming from film, where this is not possible, it is not something I ever considered.
Any information on this score would be appreciated -- especially the injunction that I'm being needlessly paranoid!


You can shoot the sun, just be very careful with the iris, and do not shoot it with the iris wide open.

Amos Kim
June 24th, 2006, 05:42 PM
i was always told NEVER to shoot the sun. Can someone confirm with some further articulation?

Stephen Knapp
June 24th, 2006, 05:46 PM
i was always told NEVER to shoot the sun. Can someone confirm with some further articulation?


If I was going to do it, I would use the LCD monitor and NOT the viewfinder eyepiece.

K. Forman
June 24th, 2006, 06:23 PM
i was always told NEVER to shoot the sun. Can someone confirm with some further articulation?
No, shooting the Sun would leave us in an icy blackness that would destroy all life on Earth... <g>

Bob Grant
June 24th, 2006, 06:57 PM
Focussing the sun onto anything is a quick way to fry it, even EVFs can get damaged. I'd put as much ND in front of the lens as possible rather than rely on fast shutter and irising down. Faster shutter speeds are not reducing the amount of energy hitting the imager, irising down is helping however then the iris itself is copping a lot of energy.
Bear in mind that sunlight contains a lot of invisible UV and IR energy that may get through the lens. Also due to the different wavelengths I haven't a clue as to where that energy is being concentrated. If it was my camera I'd be taking all possible precautions.

Steve Oakley
June 24th, 2006, 07:08 PM
shooting the sun should not hurt your camera if:

you shoot with a LONG lens. This spreads the image out. shooting with a wide angle will concentrate the sun image to a point, which concentrates the energy to a small point. that said, you need a lot of ND to shoot the sun, and one option is to get a peice of dark glass from an ARC welder's shield. they sell replacements for like $10 and in several grades, get the middle or darkest one. With this in front of the lens ( tape it to the lens shade ), you should be in good shape. i've done this to shoot a few eclipses with my old camera.

AFA as the viewfinder thing. The concern is that the lens will concentrate the sun into a small image and burn the LCD. thats it. as far as shooting, it doesn't matter if you use the VF or the external LCD... same thing. with still cameras, you would directly view the light from the lens to your eye, in which case a great deal of care needs to be taken. Again, a wide anlge lens poses the most risk since it concentrates the image to the smallest point. Remeber being a kid and using a magnification glass, big image did nothing, smallest point would burn.

above all, use common sense and be carefull.

Steve Oakley

Stephen Knapp
June 24th, 2006, 10:24 PM
AFA as the viewfinder thing. The concern is that the lens will concentrate the sun into a small image and burn the LCD. thats it. as far as shooting, it doesn't matter if you use the VF or the external LCD...


You missed my point. Irrespective of focused intensity, looking directly at the sun whether with a bare eye or through a lens can damage the biology of the eye. Retinal nerves, rods and cones, internal lens tissue, the whole nine yards. And even with a long lens on the camera, looking through the viewvinder will give that eye a nice strong dose of UV even on a cloudy day. Don't do it if you don't have to, and with an LCD monitor on board, you don't have to. That was MY point.

Robert Schaller
June 24th, 2006, 10:35 PM
Thank you all for the information. I hope I haven't damaged it already -- I'll get some more ND glass for the lens in the future. This was not anything I ever thought to consider, since it wasn't an issue on film. New tools, new rules!

If damage did occur, what would it look like? How would I know?

Thanks again,

Robert Schaller

Steve Oakley
June 24th, 2006, 10:56 PM
You missed my point. Irrespective of focused intensity, looking directly at the sun whether with a bare eye or through a lens can damage the biology of the eye. Retinal nerves, rods and cones, internal lens tissue, the whole nine yards. And even with a long lens on the camera, looking through the viewvinder will give that eye a nice strong dose of UV even on a cloudy day. Don't do it if you don't have to, and with an LCD monitor on board, you don't have to. That was MY point.

um... the HD100, as do all video cameras, you aren't looking through the lens in the viewfinder, its a LCD, or CRT for other cameras. there is no risk here.

its only with SLR still cameras (digital or film) and 8/16/35mm movie cameras that you are sighting through the lens, and therefore any chance of eye damage rests only with those cameras.

Steve Oakley

Jiri Bakala
June 25th, 2006, 09:31 AM
I have never heard of damage to a CCD camera caused by shooting the sun. Viewing the image is like watching it on TV - if it's properly exposed, there is no danger.

John Mitchell
June 25th, 2006, 11:19 AM
I agree - you cannot damage your eyes looking at the sun through your viewfinder or the LCD - even if completely over exposed, you are only exposing your eyes to the maximum amount of light those electronic imagers can generate - it's harmless.
Looking directly at the sun through any kind of SLR or film camera with an optical viewfinder is dangerous without adequate protection.
Certainly on the old tube cameras you could damage them with any prolonged exposure to any bright source. CCD's seem to be more prone to gamma length radiation (ie that experienced at high altitude in an aircraft) - no doubt prolonged overexposure to high UV could damage them, but ND'd down correctly and with a single UV filter should be fine. All CCD cameras already have an infra red filter (sometimes removable for night vision) because of the colour cast this wavelength causes.

Stephan Ahonen
June 25th, 2006, 02:13 PM
And even with a long lens on the camera, looking through the viewvinder will give that eye a nice strong dose of UV even on a cloudy day.

Video cameras don't have reflex viewfinders. It's an LCD in there. Looks like someone's a bit too used to shooting film.

Stephen Knapp
June 25th, 2006, 05:44 PM
Video cameras don't have reflex viewfinders. It's an LCD in there. Looks like someone's a bit too used to shooting film.


You're absolutely right, on both counts. I just opened up one on a Sony DXC, and sure enough it was just an eyepiece to a small LCD monitor. I stand corrected.

Adam Craig
June 25th, 2006, 09:31 PM
Remember when you were a kid and used a magnifying glass on a leaf to burn it?
That was focusing that wide area of sun to a smaller area, thus concentrating the light. Your lens does the same thing only it passes through several maginifying glasses. So you effectivly, rather than a ant or leaf you are focusing the sun on your $6,000+ CCDS. It probaly won't get hot enough to do damage, but it's still a bit silly. I would reccomend using a Glass ND filter of you must get the shot.

my 2 cents.

Robert Schaller
June 26th, 2006, 11:08 AM
Adam Craig put my dilemma clearly:

"Remember when you were a kid and used a magnifying glass on a leaf to burn it? That was focusing that wide area of sun to a smaller area, thus concentrating the light. Your lens does the same thing only it passes through several maginifying glasses. So you effectivly, rather than a ant or leaf you are focusing the sun on your $6,000+ CCDS."

This leads me to wonder about what John Mitchel describes:

"CCD's seem to be more prone to gamma length radiation (ie that experienced at high altitude in an aircraft) - no doubt prolonged overexposure to high UV could damage them, but ND'd down correctly and with a single UV filter should be fine."

I certainly will take these precautions in the future, but I'm afraid that I already shot the sun (at least, at max telephoto and with a Haze 1 "lens protector" filter that Tiffen claims absorbs almost 3/4 of UV light) without thinking about it, and of course shutter speed is irrelevant, and I did it at 8,200 feet, which probably counts as "high altitude."

So, my concern is about what I may have already done. I know what to do next time (and thanks to all for their suggestions!)!

What Jiri Bakala says is reassuring,

"I have never heard of damage to a CCD camera caused by shooting the sun."

I hope that his never having heard is because it doesn't happen, but intuitively I am nervous. Testing and time will tell. But, if anyone has ever heard of such damage, I would like to hear about it.

Thanks,

Robert Schaller

Stephan Ahonen
June 26th, 2006, 01:12 PM
I've got an idea. Detach the lens from the camera and hold it up pointing at the sun so that it's focusing the light on a thermometer bulb. Now we can see exactly how much energy is getting transmitted to the CCD.

Steve Oakley
June 26th, 2006, 01:39 PM
gamma radiation damage shows up as bad pixels. to do this, you need to put the camera on a plane. the fix is the dead pixel mask routine to remove them.

AFA shooting the sun, I put several hours on my 327A a few years back shooting elciplses, with welders ND filter and no extra filter. no damage. YMMV, but I would not expect a problem. Again, its making the image of the sun SMALL that is of potential harm - meaning a wide angle shot, not a full the frame long lens shot. I would not worry about it. we put wide angle lenses onto cameras everyday with the sun in the shot - is there ever a problem ? ( tube cameras excluded :) ).. nope.

Steve Oakley

Jonathan Nelson
June 26th, 2006, 05:16 PM
just don't look threw the vf, could damage your eyes from the uv rays.

Joel Aaron
June 26th, 2006, 05:51 PM
I'm thinking this is the kind of thing visual effects were invented for. And rental shops.

K. Forman
June 26th, 2006, 06:16 PM
Or cheap cameras.

Jiri Bakala
June 26th, 2006, 09:34 PM
just don't look threw the vf, could damage your eyes from the uv rays.
I am sorry Jonathan but what you are saying makes no sense for electronic cameras - what you are viewing is a small LCD or tube screen and it's no different than watching TV. There are NO UV rays going through the electronic VF or LCD display. Only optical systems may be a cause for concern and I would check with an experienced photographer or film DP. I suspect there is lot less to worry about that we might think...