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Archive 2013Clear Photos in Dim Light.
p.1 #1Clear Photos in Dim Light.
Cameras fitted with a new revolutionary sensor will soon be able to take clear and sharp photos in dim conditions, thanks to a new image sensor invented at Nanyang Technological University.
This looks like a game changer.
http://www.sciencedaily.com/releases/2013/05/130530094624.htm
This looks like a game changer.
http://www.sciencedaily.com/releases/2013/05/130530094624.htm
May 30, 2013 at 11:29 PM
p.1 #2Clear Photos in Dim Light.
I heard that graphene sensors will be installed in most cameras by 2015, and in Leicas at least by 2035. 
May 31, 2013 at 11:49 AM
p.1 #4Clear Photos in Dim Light.
The "1000x" improvement here doesn't actually mean getting the same quality of photos in 10 stops dimmer (1000x) light. What has been improved by 1000x is the amplitude of the signal produced per photon by the initial detector: this graphene structure has extremely high "gain" for converting a single captured photon into a big electrical signal. However, you can also add gain to a "weaker" detector using amplifier stages to boost a smaller signal --- which is exactly what existing camera sensors do. And existing sensors are already getting pretty close to the theoretical limits of performance; there is no additional "1000x improvement" in low light capability to gain.
Most of the image quality problems with low light imaging come from photon counting statistics (shot noise) --- a more sensitive detector like this can help reduce problems like pattern/readout noise, but it won't make ISO100,000 images look like ISO100.
PS: this thread might be better suited for the "General" forum.
Most of the image quality problems with low light imaging come from photon counting statistics (shot noise) --- a more sensitive detector like this can help reduce problems like pattern/readout noise, but it won't make ISO100,000 images look like ISO100.
PS: this thread might be better suited for the "General" forum.
May 31, 2013 at 05:36 PM
p.1 #5Clear Photos in Dim Light.
mpmendenhall wrote:
The "1000x" improvement here doesn't actually mean getting the same quality of photos in 10 stops dimmer (1000x) light. What has been improved by 1000x is the amplitude of the signal produced per photon by the initial detector: this graphene structure has extremely high "gain" for converting a single captured photon into a big electrical signal. However, you can also add gain to a "weaker" detector using amplifier stages to boost a smaller signal --- which is exactly what existing camera sensors do. And existing sensors are already getting pretty close to the theoretical limits of performance; there is no...Show more →
Thank you for the explanation.
The "1000x" improvement here doesn't actually mean getting the same quality of photos in 10 stops dimmer (1000x) light. What has been improved by 1000x is the amplitude of the signal produced per photon by the initial detector: this graphene structure has extremely high "gain" for converting a single captured photon into a big electrical signal. However, you can also add gain to a "weaker" detector using amplifier stages to boost a smaller signal --- which is exactly what existing camera sensors do. And existing sensors are already getting pretty close to the theoretical limits of performance; there is no...Show more →
Thank you for the explanation.
Jun 01, 2013 at 12:14 AM