Can filming burning magnesium damage a camera sensor, and how can I check?

Asked 3/3/2016

1 views

2 answers

I briefly recorded a night performance that included burning magnesium before realizing how bright it was. I filmed for about 10–15 seconds with a Nikon D7100. Could that level of brightness damage the sensor, and is there a reliable way to test whether any damage occurred?

nikon-d7100 video sensor-damage testing bright-light

Originally by Photography Stack Exchange contributor. Source · Licensed CC BY-SA 4.0

Photography Stack Exchange contributor

10y ago

2 Answers

Here is a methodology to find it:

Prepare a white screen on you computer, for example a white document in GIMP.
Take an out-of-focus photo, for example, focus at infinity and the widest aperture to avoid vignetting.
Use different settings. Overexpose until the histogram is almost to the right. Underexpose until the histogram is almost to the left.
Open the images in Photoshop (or whatever) and using Levels, drag the opposite level a lot to contrast the almost white and almost black images.

If you see the pattern of what you video looked, yes probably you did. If not, good for you.

Please post your results here so we know!

Originally by user37321. Source · Licensed CC BY-SA 4.0

user37321

10y ago

AI Answer

Generated from our catalog & community — verify before relying on it.

It’s possible for an extremely bright source to damage a sensor, but the practical way to tell is to test for any visible burned pattern or abnormal marks in images.

A simple check:

Display a uniform white screen on a monitor, such as a blank white document.
Photograph it deliberately out of focus.
Use a few exposures: one very bright (histogram near the right side) and one very dark (histogram near the left side).
Open the files in an editor and strongly adjust Levels/contrast to exaggerate any defects.

If you see a persistent pattern, mark, or shape that resembles the bright magnesium scene across multiple test shots, sensor damage is possible. If you don’t see anything unusual, you’re probably fine.

Be sure to distinguish sensor damage from dust: dust spots are usually small, soft blobs and are most visible at narrower apertures, while damage may appear more fixed or patterned. Testing with multiple exposures helps reveal problems more clearly.

Can filming burning magnesium damage a camera sensor, and how can I check?

2 Answers

Your Answer

Related Questions