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Can low speed shutter like 20sec in "Bright Light Condition" Damage the Camera? "Bright light condition" mean artificial lights and Indirect sunlight. Just like a picture tooked in a bright room with 20sec shutter and the result is "one color white picture because high light!"

  • Describe "bright light conditions". Are we talking about sunlight or artificial light? If sunlight, where is the sun in relation to the camera? – Allen Howard Feb 14 '18 at 15:41
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    Can the sun damage a sensor? yes but can you give a bit more information, are you asking out of curiosity for an idea? why would you need to do this? – Matthew Feb 14 '18 at 15:48
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    @saidh if it's just like a bulb, no, if it's something like the sun or laser yes, however, I'd wait for a better answer giving more detail. – Matthew Feb 14 '18 at 15:58
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    @saidh can you give a bit more detail on what exactly is "bright light" – Matthew Feb 14 '18 at 16:41
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    There's a big difference between taking a blown out, overexposed photo and damaging a sensor. What are you trying to figure out? If overexposure can cause damage? – Hueco Feb 14 '18 at 17:04
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If you are talking about normal lighting conditions, then overexposing a photo that results in a totally white image will not damage a camera. After all, if there is any pure white in a scene, that spot on the sensor is totally saturated when properly exposed. Such an exposure does not damage the spot on the sensor that records the pure white, does it?

If you are using a mirrorless camera, other than the very brief times when the mechanical shutter closes/opens to expose the image/closes/reopens to continue Live View, the imaging sensor is exposed to light for the entire time the camera is turned on. Under very bright daylight conditions the camera is not damaged even after many minutes of continuous use. The same is true with shooting video. Even in very bright conditions the sensor is not damaged when exposed to light for several minutes or even hours.

Where you will get into problems is if an extremely bright direct light source, such as the sun or a powerful laser, is inside the camera's field of view. In that case it might not even take a long exposure to damage the camera. Lasers with enough power can damage a sensor almost instantly.

Damage from pointing the camera at the sun is usually heat related and takes a bit longer. Longer focal length lenses, which concentrate more of the sun's energy, can contribute to major damage:

https://www.the-digital-picture.com/Help/Flare.aspx

https://www.lensrentals.com/blog/2017/09/rental-camera-gear-destroyed-by-the-solar-eclipse-of-2017/

https://www.lensrentals.com/blog/2017/09/rental-camera-gear-destroyed-by-the-solar-eclipse-of-2017/

With wider angle lenses and a camera with a mechanical shutter that covers the sensor at all times except when the image is actually exposed, it is possible to take images that contain the sun in the field of view without damaging the camera. Be very careful not to look directly at the sun in the viewfinder, though, as the sun can damage your eyes!

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You are mixing few things together. First, take a look at the exposure triangle. What is shows is that amount of light hitting your sensor, depends on exposure and aperture. Smaller apertures (f-number 22) will let in less light. Longer exposure will let in more total amount of light.

Now, sensor can be damaged by very intense light, just like any material. Exposure is only part of equation, for example, you might be OK with 20 second exposure when aperture is very low. On the other hand, short exposure can let in enough light to damage the sensor when aperture is open.

From this question, it seems that if you shoot sun directly (or sun eclipse) at 1/4000 shutter speed and f22 aperture, you can actually damage your sensor. So don't do it.

What also is important is not just amount of light getting into camera, but how fast it gets there. In other words, your 20 second exposure with small aperture can get in a lot of light, but over longer period, allowing camera to cool down, hence lowering chance of damage. Damage to camera is a sum of heat in versus heat out.

  • The question you referenced is specifically about mirrorless cameras. In a DSLR, sunlight would not be hitting the sensor until you open the shutter, so I don't think you would have to worry about any damage shooting at high speeds. – Robin Feb 14 '18 at 17:53
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    @robin I guess you mean: you would have burning mirror before sensor is burning? You are right, in DSLR also your eye might be damaged before sensor. I quoted that Q because it points to one particular case – aaaaa says reinstate Monica Feb 14 '18 at 17:58
  • @Robin You wouldn't need to worry about damaging the sensor, but you could damage other parts of the camera with focal lengths typically used for imaging objects only 1/2° of arc in width. And then there is Live View... Can the sun damage the camera sensor? Under what conditions? – Michael C Feb 15 '18 at 7:14
  • I burned the sensor on my old D70 while on holiday. Luckily it would only show up on long exposures as a slight shadow. – Digital Lightcraft Feb 15 '18 at 15:48
  • @PhotoScientist i doubt calculations can be covered by NDA :) And since there were 36 solar eclipses in 21st century, there should be enough practical data to accurately set up photography – aaaaa says reinstate Monica Feb 15 '18 at 17:09

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