Digital camera noise reduction idea

I was curious if anyone has thought of the following way to
reduce image noise, in particular noise that comes from an
electromagnetic source i.e. not light. The idea is,
just cover most of the camera with tinfoil, everything except
the lens of course. By this method, the only signal noise
that affects the analog sensor elements will be of either
internal origin (the circuits) or optical.

But will it work? I haven't tried it, since I temporarily don't
have a digital camera.

It wont make any difference as the internal electronics are low
impedance anyway.

The noise is caused by the semiconductor material not outside
interference.

On Dec 3, 3:42 am, Marra wrote:
It wont make any difference as the internal electronics are low
impedance anyway.

The noise is caused by the semiconductor material not outside
interference.

Part of it is also inherent in the incoming signal (because at low
enough levels the photon's discreteness is important).

On Dec 3, 1:00 am, Viator wrote:
I was curious if anyone has thought of the following way to
reduce image noise, in particular noise that comes from an
electromagnetic source i.e. not light. The idea is,
just cover most of the camera with tinfoil, everything except
the lens of course. By this method, the only signal noise
that affects the analog sensor elements will be of either
internal origin (the circuits) or optical.

But will it work? I haven't tried it, since I temporarily don't
have a digital camera.

No, it will not work. A tinfoil hat on the operators head
might be a more useful idea, though...

Dimiter

On Sun, 2 Dec 2007 15:00:14 -0800 (PST), Viator
wrote:

I was curious if anyone has thought of the following way to
reduce image noise, in particular noise that comes from an
electromagnetic source i.e. not light. The idea is,
just cover most of the camera with tinfoil, everything except
the lens of course. By this method, the only signal noise
that affects the analog sensor elements will be of either
internal origin (the circuits) or optical.

But will it work? I haven't tried it, since I temporarily don't
have a digital camera.

The noise comes from the sensor and the electronics, not from radio
signals around you.

You can reduce noise by cooling the camera. That reduces in the sensor
and electronics. Don't cool below freezing, though, because then the
battery will fail.

Ed

Viator wrote:
I was curious if anyone has thought of the following way to
reduce image noise, in particular noise that comes from an
electromagnetic source i.e. not light. The idea is,
just cover most of the camera with tinfoil, everything except
the lens of course. By this method, the only signal noise
that affects the analog sensor elements will be of either
internal origin (the circuits) or optical.

But will it work? I haven't tried it, since I temporarily don't
have a digital camera.

I think your tinfoil helmet has slipped.

EAL wrote:
On Sun, 2 Dec 2007 15:00:14 -0800 (PST), Viator
wrote:

I was curious if anyone has thought of the following way to
reduce image noise, in particular noise that comes from an
electromagnetic source i.e. not light. The idea is,
just cover most of the camera with tinfoil, everything except
the lens of course. By this method, the only signal noise
that affects the analog sensor elements will be of either
internal origin (the circuits) or optical.

But will it work? I haven't tried it, since I temporarily don't
have a digital camera.

The noise comes from the sensor and the electronics, not from radio
signals around you.

You can reduce noise by cooling the camera. That reduces in the sensor
and electronics. Don't cool below freezing, though, because then the
battery will fail.

Ed

It is true that even a small reduction in the temperature of the sensor
can greatly lower noise. However, one runs into power problems (lithium
batteries can help), and condensation problems when the camera is
returned to room temperatures.

In rec.photo.digital Didi wrote:
On Dec 3, 1:00 am, Viator wrote:

I was curious if anyone has thought of the following way to
reduce image noise, in particular noise that comes from an
electromagnetic source i.e. not light. The idea is,
just cover most of the camera with tinfoil, everything except
the lens of course. By this method, the only signal noise
that affects the analog sensor elements will be of either
internal origin (the circuits) or optical.

But will it work? I haven't tried it, since I temporarily don't
have a digital camera.

No, it will not work. A tinfoil hat on the operators head
might be a more useful idea, though...

It would help if the tinfoil was very thick, say an inch, and deep
frozen first before applying it to the camera half an hour before
taking a photograph.

--
Chris Malcolm DoD #205
IPAB, Informatics, JCMB, King's Buildings, Edinburgh, EH9 3JZ, UK
[http://www.dai.ed.ac.uk/homes/cam/]

On 3 Dec 2007 10:20:07 GMT, Chris Malcolm
wrote:

In rec.photo.digital Didi wrote:
On Dec 3, 1:00 am, Viator wrote:

I was curious if anyone has thought of the following way to
reduce image noise, in particular noise that comes from an
electromagnetic source i.e. not light. The idea is,
just cover most of the camera with tinfoil, everything except
the lens of course. By this method, the only signal noise
that affects the analog sensor elements will be of either
internal origin (the circuits) or optical.

But will it work? I haven't tried it, since I temporarily don't
have a digital camera.

No, it will not work. A tinfoil hat on the operators head
might be a more useful idea, though...

It would help if the tinfoil was very thick, say an inch, and deep
frozen first before applying it to the camera half an hour before
taking a photograph.
He could also mount a high powered phase cancellation oscillator
on the camera.

No, it will not work. A tinfoil hat on the operators head
might be a more useful idea, though...

I appreciate your maturity.