CMOS VS CCD | DC's battery life

[revenant]

Hi,

hmm..... why is CMOS sensor inferior compared with CCD? Because of higher noise? and???

Another question, how long do you all think a typical DC with fully charged batteries able to last continuously with the LCD switched on? On average?

thanx in advanced

P.S CMOS stands for Complementary Metal Oxide Semiconductor right?

 

[mpenza]

thought CMOS generates less heat and would have lower noise levels during long exposures?

 

[revenant]

Originally posted by mpenza
thought CMOS generates less heat and would have lower noise levels during long exposures?

Sorry I not very sure. Then why is CCD used in most digital camera instead of CMOS?

 

[Shadus]

CMOS is not inferior to CCD. What gives u that impression?

mpengza is probably right on his statement

CMOS is still rather 'new' technology compared to CCD.
In the long run CMOS is much cheaper than CCD as most wafer fabs today can produce the CMOS whilst CCD needs special fabs to produce.

 

[revenant]

Originally posted by Shadus
CMOS is not inferior to CCD. What gives u that impression?

mpengza is probably right on his statement

CMOS is still rather 'new' technology compared to CCD.
In the long run CMOS is much cheaper than CCD as most wafer fabs today can produce the CMOS whilst CCD needs special fabs to produce.

oh, i see. Then why is CCD being used as the sensor than CMOS in most digital cameras?

 

[mpenza]

Originally posted by revenant


oh, i see. Then why is CCD being used as the sensor than CMOS in most digital cameras?

because it's an existing technology. e.g. CCD has been used in scanners for years (decades?) while cmos scanners are just coming into being over the 2-3 years.

lowend webcams and digicams (e.g. Koday PalmPix for Palm 3 series) use CMOS and highend ones (Canon D30, D60) use CMOS too! but there's definitely a big difference in quality between the two types.

 

[revenant]

Originally posted by mpenza


because it's an existing technology. e.g. CCD has been used in scanners for years (decades?) while cmos scanners are just coming into being over the 2-3 years.

lowend webcams and digicams (e.g. Koday PalmPix for Palm 3 series) use CMOS and highend ones (Canon D30, D60) use CMOS too! but there's definitely a big difference in quality between the two types.

oh, never knew D30 and D60 uses CMOS.

So, it can be said that CMOS is better than CCD instead?

 

[mpenza]

can't really say that too ;p

top of the line Canon 1D uses CCD and cheap webcam cum digicams uses CMOS ;p

 

[revenant]

Originally posted by mpenza
can't really say that too ;p

top of the line Canon 1D uses CCD and cheap webcam cum digicams uses CMOS ;p

So, each has its own pros and cons, can't really determine which is better?

 

[Shadus]

Originally posted by mpenza
can't really say that too ;p

top of the line Canon 1D uses CCD and cheap webcam cum digicams uses CMOS ;p

That just changed slightly with the top of the line (in megapix) Canon 1Ds uses CMOS! (11megapix of it entirely in CMOS )

 

[Shadus]

Originally posted by revenant


So, each has its own pros and cons, can't really determine which is better?

At this moment, yes, can't really tell.
But i've to mention again, CMOS in the long run is much cheaper in production compared to CCD. Once those CMOS producers recover their research cost, then i forsee the cost of CMOS dropping.

 

[Shadus]

Here's an interesting article

 

[Shadus]

More interesting articles which tempts to swing in favour of CMOS

 

[Shadus]

Outdated article from HowStuffWork but still pretty useful

 

[Shadus]

Oh well, I might as well post more links right?

 

[Shadus]

For true blue techie freaks, (and you'll need pdf for this)

 

[revenant]

thanks.

 

[revenant]

Originally posted by revenant

Another question, how long do you all think a typical DC with fully charged batteries able to last continuously with the LCD switched on? On average?

:dunno:

 

[Shadus]

typically, all dpreview's DC is tested for their battery life using their standard test

For example,

you can surf around and read the reviews of other DC

 

[revenant]

Originally posted by Shadus
typically, all dpreview's DC is tested for their battery life using their standard test

For example,

you can surf around and read the reviews of other DC

thanx very much