CCD Chips at DVinfo.net

Anja Schuetz · December 5th, 2004, 06:11 AM

Hi there!
Does anybody know what kind of CCDs are used in the Sony and JVC. I mean is it an IT, FIT, FT or M-FIT CCD?
And also I can not find the exact info on the sensibility for the Sony camcorder. It always says 35lx, but the exact info would be the aperture at 2000lx resulting in a 100% videosignal.
Thanks already. Bye

Andre De Clercq · December 5th, 2004, 10:58 AM

Consumer cams use IT CCD readout. Maybe some (XL2?) use a reduced FIT (on chip buffer). Exact, standarized figures for minimum ilumination and sensitivity for consumer cams are "avoided" because the game (and commercial misleading) must go on...

John Jay · December 5th, 2004, 11:21 AM

Below is the spec for the FX1 CCD

Image size Opposite angle 6.0mm (1/3 types), aspect ratio 16: 9
The number of entire pixels 1012 (horizontality) × 1111 (vertical) approximately 1120000 pixels
The number of effective pixels 972 (horizontality) × 1100 (vertical) approximately 1070000 pixels
Unit flotation cell size 5.45 mm (horizontal) × 2.725 mm (verticality)
Lowest subject luminous intensity 6 luces
Sensitivity (F 8) 440 mV
Smear -107dB
Package 14pin plastic metal package
External size 10.0 mm (height) × 10.0mm (width) × 6.8mm (depth)

this has been translated through the babel, however 2 points of interest are

does 6 luces mean 3 lux?
how many lux is 440mV?

Kevin Dooley · December 5th, 2004, 12:20 PM

Given the difference between the Japense standard for measuring the sensitivity and whatever we use here...it's 6 lux according to the Japanese standard and 3 for us...so, yes 6 luces does translate to 3 lux for us.

Andre De Clercq · December 6th, 2004, 03:19 AM

'luces' (Italian language: means 'light') is not an SI unit for luminous flux density(illuminance). It could mean 'lux' (latin) and then would 1 lux equal 1 luce.
(F8) 440mv is meaningless...as always with consumer cams. It probably tells us what the output voltage is when the iris is set at F8. The lux value to get this voltage should be mentioned, and the testcard reflectivity, colortemp of the light, AND the S/N ratio are missing too.

Barry Green · December 6th, 2004, 01:23 PM

To put it in easier-to-understand terms:

Under identical lighting conditions and identical aperture, the FX1 responded as 160ASA. The XL2 responded at 200ASA, and the DVX at 400.

Kevin Dooley · December 6th, 2004, 01:44 PM

<<<-- Originally posted by Andre De Clercq : 'luces' (Italian language: means 'light') is not an SI unit for luminous flux density(illuminance). It could mean 'lux' (latin) and then would 1 lux equal 1 luce.
(F8) 440mv is meaningless...as always with consumer cams. It probably tells us what the output voltage is when the iris is set at F8. The lux value to get this voltage should be mentioned, and the testcard reflectivity, colortemp of the light, AND the S/N ratio are missing too. -->>>

Yeah, I assumed luce was a poor translation by babel, especially since the FX1/Z1 is rated at 6 lux in Japan.

December 5th, 2004, 06:11 AM	#1
Anja Schuetz New Boot Join Date: Jul 2004 Posts: 11	CCD Chips Hi there! Does anybody know what kind of CCDs are used in the Sony and JVC. I mean is it an IT, FIT, FT or M-FIT CCD? And also I can not find the exact info on the sensibility for the Sony camcorder. It always says 35lx, but the exact info would be the aperture at 2000lx resulting in a 100% videosignal. Thanks already. Bye

December 5th, 2004, 11:21 AM	#3
John Jay Major Player Join Date: Sep 2002 Location: US & THEM Posts: 827	Below is the spec for the FX1 CCD Image size Opposite angle 6.0mm (1/3 types), aspect ratio 16: 9 The number of entire pixels 1012 (horizontality) × 1111 (vertical) approximately 1120000 pixels The number of effective pixels 972 (horizontality) × 1100 (vertical) approximately 1070000 pixels Unit flotation cell size 5.45 mm (horizontal) × 2.725 mm (verticality) Lowest subject luminous intensity 6 luces Sensitivity (F 8) 440 mV Smear -107dB Package 14pin plastic metal package External size 10.0 mm (height) × 10.0mm (width) × 6.8mm (depth) this has been translated through the babel, however 2 points of interest are does 6 luces mean 3 lux? how many lux is 440mV? __________________ John Jay Beware *PLUGGER-BYTES*

December 5th, 2004, 10:58 AM	#2
Andre De Clercq Major Player Join Date: Sep 2002 Location: Belgium Posts: 804	Consumer cams use IT CCD readout. Maybe some (XL2?) use a reduced FIT (on chip buffer). Exact, standarized figures for minimum ilumination and sensitivity for consumer cams are "avoided" because the game (and commercial misleading) must go on...

December 5th, 2004, 12:20 PM	#4
Kevin Dooley Major Player Join Date: Dec 2003 Location: Fort Worth, TX Posts: 414	Given the difference between the Japense standard for measuring the sensitivity and whatever we use here...it's 6 lux according to the Japanese standard and 3 for us...so, yes 6 luces does translate to 3 lux for us.

December 6th, 2004, 03:19 AM	#5
Andre De Clercq Major Player Join Date: Sep 2002 Location: Belgium Posts: 804	'luces' (Italian language: means 'light') is not an SI unit for luminous flux density(illuminance). It could mean 'lux' (latin) and then would 1 lux equal 1 luce. (F8) 440mv is meaningless...as always with consumer cams. It probably tells us what the output voltage is when the iris is set at F8. The lux value to get this voltage should be mentioned, and the testcard reflectivity, colortemp of the light, AND the S/N ratio are missing too.

December 6th, 2004, 01:23 PM	#6
Barry Green Barry Wan Kenobi Join Date: Jul 2003 Location: North Carolina Posts: 3,863	To put it in easier-to-understand terms: Under identical lighting conditions and identical aperture, the FX1 responded as 160ASA. The XL2 responded at 200ASA, and the DVX at 400.

December 6th, 2004, 01:44 PM	#7
Kevin Dooley Major Player Join Date: Dec 2003 Location: Fort Worth, TX Posts: 414	<<<-- Originally posted by Andre De Clercq : 'luces' (Italian language: means 'light') is not an SI unit for luminous flux density(illuminance). It could mean 'lux' (latin) and then would 1 lux equal 1 luce. (F8) 440mv is meaningless...as always with consumer cams. It probably tells us what the output voltage is when the iris is set at F8. The lux value to get this voltage should be mentioned, and the testcard reflectivity, colortemp of the light, AND the S/N ratio are missing too. -->>> Yeah, I assumed luce was a poor translation by babel, especially since the FX1/Z1 is rated at 6 lux in Japan.