BA
The 'puddling' effects you get with bright blue lights is something that's a artefact of modern (last 10 years or so) camera sensors, I've never been given, or seen a proper detailed explanation of its causes, something to with optical filtering of the image before it his the sensor I'm told ?
Examples here
https://www.youtube.com/watch?v=ntLlU6U2-zM
You might perhaps remember that I posted quite a while ago that I pointed this problem out to Sony when the company I worked for took delivery of their first batch of Sony's hdc1000/1500 cameras, this would be about 7 years or so ago. The problem was/is particularly noticeable when the camera was pointed at a light source that had a very restricted set of wavelengths within it - it could be easily seen when the cameras were pointed at the fluorescent lights above the lighting grid for example. Sony's resident camera expert came along to see it and naturally said they would look into it. No solution or explanation was ever forthcoming, but it was not too much of a problem in a studio environment. The effect was exactly as seen in the link you pointed to.
Is that the same thing that causes black patches to occasionally appear on heavily blue backdrops (especially in news packages)? That's always irritated me.
I noticed the rewinding effect didn't look particularly realistic - I wonder if that could have been something to do with flashing image rules.
You see a lot of blurred gunfire in action movies because of this, and subdued emergency blue lights in news footage. I assume they've got a filter specific to the last one.
You see a lot of blurred gunfire in action movies because of this, and subdued emergency blue lights in news footage. I assume they've got a filter specific to the last one.
The 'puddling' effects you get with bright blue lights is something that's a artefact of modern (last 10 years or so) camera sensors, I've never been given, or seen a proper detailed explanation of its causes, something to with optical filtering of the image before it his the sensor I'm told ?
Examples here
https://www.youtube.com/watch?v=ntLlU6U2-zM
You might perhaps remember that I posted quite a while ago that I pointed this problem out to Sony when the company I worked for took delivery of their first batch of Sony's hdc1000/1500 cameras, this would be about 7 years or so ago. The problem was/is particularly noticeable when the camera was pointed at a light source that had a very restricted set of wavelengths within it - it could be easily seen when the cameras were pointed at the fluorescent lights above the lighting grid for example. Sony's resident camera expert came along to see it and naturally said they would look into it. No solution or explanation was ever forthcoming, but it was not too much of a problem in a studio environment. The effect was exactly as seen in the link you pointed to.
Is that the same thing that causes black patches to occasionally appear on heavily blue backdrops (especially in news packages)? That's always irritated me.
Last edited by bilky asko on 3 January 2017 3:05pm