Kodak filter improves low-light pix

[the foto fanatic]

A future photographic tool -

From The Age today:
http://www.theage.com.au/news/breaking- ... 39495.html

[phillipb]

Interesting stuff Trevor, this could potentially replace VR.

[jamesw]

anyone here got a grasp of how sensors work?

will this solve or exacerbate high iso noise problemss???

[the foto fanatic]

will this solve or exacerbate high iso noise problemss???

Good question.

I would think that there would be little point to the filter if there was still a significant noise issue, which of course, is the main bugbear with low-light photography ATM.

From reading the article it would appear that there is still some development work involved and there won't be anything to trial until next year.

[jamesw]

will this solve or exacerbate high iso noise problemss???

Good question.

I would think that there would be little point to the filter if there was still a significant noise issue, which of course, is the main bugbear with low-light photography ATM.

From reading the article it would appear that there is still some development work involved and there won't be anything to trial until next year.

it was my vague understanding that noise was caused by excess energy/heat through the sensor. like i said. very vague.

[the foto fanatic]

it was my vague understanding that noise was caused by excess energy/heat through the sensor. like i said. very vague.

Not quite. The sensor always works the same way. When the ISO is increased, the camera's internals boost the output from the sensor.

Think of it like an amplifier playing music. The source is the same, but volume is increased by turning up the the amplifier - if you keep turning it up, you'll get to the stage where there is distortion.

When you increase the ISO of your camera, you are amplifying the signal that comes from the sensor, and if you keep increasing it you will eventually get distortion (noise).

[jamesw]

it was my vague understanding that noise was caused by excess energy/heat through the sensor. like i said. very vague.

Not quite. The sensor always works the same way. When the ISO is increased, the camera's internals boost the output from the sensor.

Think of it like an amplifier playing music. The source is the same, but volume is increased by turning up the the amplifier - if you keep turning it up, you'll get to the stage where there is distortion.

When you increase the ISO of your camera, you are amplifying the signal that comes from the sensor, and if you keep increasing it you will eventually get distortion (noise).

with that broad theoretical boundry in mind, a filter that increases the quality/quantity of light the chip takes in should not increase noise, as it is increasing the input/source of light rather than the output.

[the foto fanatic]

Further info contained in this item at DP Review:

http://www.dpreview.com/news/0706/07061 ... ghsens.asp