Does a digital camera still use a lens shutter or focal plane shutter?

With the new technology in digital imaging and sensors, does a digital
camera utilize a physical lens shutter (or focal plane shutter in an
SLR) to let the light passes to the sensor? Or, can the image sensor
now be electronically turn on and off to allow for the light to
register in the sensor?
Thanks for info.

<aniramca@gmail.com> wrote in message
news:1188874165.770422.213480@k79g2000hse.googlegr oups.com...
> With the new technology in digital imaging and sensors, does a digital
> camera utilize a physical lens shutter (or focal plane shutter in an
> SLR) to let the light passes to the sensor? Or, can the image sensor
> now be electronically turn on and off to allow for the light to
> register in the sensor?
> Thanks for info.
>

A shutter.

<aniramca@gmail.com> wrote in message
news:1188874165.770422.213480@k79g2000hse.googlegr oups.com...
> With the new technology in digital imaging and sensors, does a digital
> camera utilize a physical lens shutter (or focal plane shutter in an
> SLR) to let the light passes to the sensor? Or, can the image sensor
> now be electronically turn on and off to allow for the light to
> register in the sensor?

DSLR uses a shutter just like SLR. That is why they have difficulty showing
preview on LCD screen.

Compact cameras have no problem with preview. Educated guess says they have
no mechanical shutter.

aniramca@gmail.com wrote:
> With the new technology in digital imaging and sensors, does a digital
> camera utilize a physical lens shutter (or focal plane shutter in an
> SLR) to let the light passes to the sensor?

Yes.

> Or, can the image sensor
> now be electronically turn on and off to allow for the light to
> register in the sensor?

Yes.

Depends on type, make, and model.

jue

On Mon, 03 Sep 2007 19:49:25 -0700, aniramca@gmail.com wrote:

> With the new technology in digital imaging and sensors, does a digital
> camera utilize a physical lens shutter (or focal plane shutter in an
> SLR) to let the light passes to the sensor? Or, can the image sensor
> now be electronically turn on and off to allow for the light to
> register in the sensor?
> Thanks for info.

Both mechanical and electrical shutters are used. Some cameras
such as some of Nikon's DSLRs use both types of shutters. Most P&S
cameras don't use mechanical shutters. For a good explanation of
the whats and whys, see "The Importance of Flash Sync Speed" at :

http://www.kenrockwell.com/tech/syncspeed.htm

"peter" <nospam@nospam.com> wrote:
>
>DSLR uses a shutter just like SLR. That is why they have difficulty showing
>preview on LCD screen.


Within 2 years, the majority of new DSLRs will have live preview.

Go figure.

aniramca@gmail.com wrote:
> With the new technology in digital imaging and sensors, does a digital
> camera utilize a physical lens shutter (or focal plane shutter in an
> SLR) to let the light passes to the sensor? Or, can the image sensor
> now be electronically turn on and off to allow for the light to
> register in the sensor?
> Thanks for info.
>
Most digicams have no physical shutter. That is why your
should avoid pointing the camera at the sun at any time. You
can ruin the sensor.

"Frank Arthur" <Art@Arthurian.com> wrote in message
news:wpgDi.80054$jH3.71295@bignews6.bellsouth.net. ..
>
> "Marvin" <physchem@verizon.net> wrote in message
> news:fJfDi.4189$es2.3355@trndny09...
>> aniramca@gmail.com wrote:
>>> With the new technology in digital imaging and sensors, does a digital
>>> camera utilize a physical lens shutter (or focal plane shutter in an
>>> SLR) to let the light passes to the sensor? Or, can the image sensor
>>> now be electronically turn on and off to allow for the light to
>>> register in the sensor?
>>> Thanks for info.
>>>
>> Most digicams have no physical shutter. That is why your should avoid
>> pointing the camera at the sun at any time. You can ruin the sensor.
>
> Then what keeps the image from forming on the CMOS when you aren't taking
> a picture?

Nothing. And some are not CMOS.