Ex1 color bit depth? 4:4:2 or 4:4:0 ? at DVinfo.net

Silas Barker · April 24th, 2010, 02:01 PM

What is the color output depth of the Ex1r?

What is the Z1 color Depth?

What is the Mark 5D color depth output?

Marcus Durham · April 24th, 2010, 02:20 PM

Quote:

Originally Posted by Silas Barker

What is the color output depth of the Ex1r?

What is the Z1 color Depth?

What is the Mark 5D color depth output?

Both cameras record to 4:2:0, however the EX1/EX1r can output 4:4:2 via its SDI connector.

Silas Barker · April 24th, 2010, 02:25 PM

Is there a recorder you can hook to the SDI?

Any links to B and H video that has something?

Thanks!

Marcus Durham · April 24th, 2010, 02:59 PM

Yes there is the NanoFlash unit. There's lots of people on here who are big fans who I'm sure will be along in a moment. Personally I don't have a need for one so can't really comment.

Marcus Durham · April 24th, 2010, 03:03 PM

I made a typo.

They are actually 4:2:0 for internal recording but the EX1 can output 4:2:2 via SDI. Apologies.

Tim Kolb · April 24th, 2010, 03:29 PM

Just for clarification...

Color subsample is the spec you are seeking... and it refers to the three values...the Y' sample, the horizontal color difference sample (Cr and Cb), and the third number is the vertical color difference sample (also Cr and Cb) and the third number is either the same as the second, indicating no vertical subsample, or zero, indicating a half vertical subsample.

DV NTSC is 4:1:1, which means a full Y' sample of 720x480, a 1/4 horizontal color difference sample (indicated by the middle number "1") of 180x480, and since the third number is also "1", it indicates no further subsample vertically.

MPEG2 for a NTSC DVD is 4:2:0...full Y' sample of 720x480, a 1/2 horizontal color difference sample of 360x480, which is further subsampled by half vertically (indicated by the "0"), to 360x240.

In the case of a designation with four numbers, like "4:2:2:4", the fourth number is the alpha channel.

Color "depth" is typically a term used by people when they are referring to color precision. Most acquisition codecs are 8 bit, which have 256 possible values in each color channel. There are a couple 10 bit acquisition formats like AVC-Intra from Panasonic or ProRes on the KiPro device from AJA. 10 bit precision doubles the precision twice (each bit adds an "on-off" state, doubling the possible values), creating 1024 possible values and increasing color precision significantly.

The EX1 records hi definition video at 8 bit precision, 4:2:0 color subsample, MPEG2. 4:2:2, uncompressed is what comes out of the HDSDI output (technically the serial digital format would support 10 bit, but I'm not really certain what the camera is putting out...8 or 10 bit.). There are several external recorders that will take the HDSDI feed from the camera...NanoFlash, AJA KiPro, CineDeck, and others... They use various recording formats and compression techniques, and have data rates that can vary widely, as can the associated post production workflows.

David Issko · April 24th, 2010, 06:33 PM

According to Convergent Design, the HDSDI o/p of the EX cameras is 10 bit 4:2:2, and yes, the nanoflash is a superb 8 bit 4:2:2 recorder that hooks up to the HDSDI o/p of the EX camera as well as HDMI output from such equipped cameras.
Cheers

Dave Morrison · April 24th, 2010, 07:31 PM

Can anybody tell me what the EX-1r is outputting from its' HDMI port? Is it analog or digital?

Serena Steuart · April 24th, 2010, 08:17 PM

HDMI (High-Definition Multimedia Interface) is a compact audio/video interface for transmitting uncompressed digital data

April 24th, 2010, 02:01 PM	#1
Silas Barker Major Player Join Date: Dec 2009 Location: Sacramento, California Posts: 577	Ex1 color bit depth? 4:4:2 or 4:4:0 ? What is the color output depth of the Ex1r? What is the Z1 color Depth? What is the Mark 5D color depth output?

April 24th, 2010, 02:59 PM	#4
Marcus Durham Major Player Join Date: Jul 2009 Location: Hampshire, UK Posts: 693	Yes there is the NanoFlash unit. There's lots of people on here who are big fans who I'm sure will be along in a moment. Personally I don't have a need for one so can't really comment. __________________ Marcus Durham Media2u, Corporate Video Production For Your Business - http://www.media2u.co.uk

April 24th, 2010, 03:03 PM	#5
Marcus Durham Major Player Join Date: Jul 2009 Location: Hampshire, UK Posts: 693	I made a typo. They are actually 4:2:0 for internal recording but the EX1 can output 4:2:2 via SDI. Apologies. __________________ Marcus Durham Media2u, Corporate Video Production For Your Business - http://www.media2u.co.uk

April 24th, 2010, 03:29 PM	#6
Tim Kolb Major Player Join Date: Mar 2005 Location: Neenah, WI Posts: 547	Just for clarification... Color subsample is the spec you are seeking... and it refers to the three values...the Y' sample, the horizontal color difference sample (Cr and Cb), and the third number is the vertical color difference sample (also Cr and Cb) and the third number is either the same as the second, indicating no vertical subsample, or zero, indicating a half vertical subsample. DV NTSC is 4:1:1, which means a full Y' sample of 720x480, a 1/4 horizontal color difference sample (indicated by the middle number "1") of 180x480, and since the third number is also "1", it indicates no further subsample vertically. MPEG2 for a NTSC DVD is 4:2:0...full Y' sample of 720x480, a 1/2 horizontal color difference sample of 360x480, which is further subsampled by half vertically (indicated by the "0"), to 360x240. In the case of a designation with four numbers, like "4:2:2:4", the fourth number is the alpha channel. Color "depth" is typically a term used by people when they are referring to color precision. Most acquisition codecs are 8 bit, which have 256 possible values in each color channel. There are a couple 10 bit acquisition formats like AVC-Intra from Panasonic or ProRes on the KiPro device from AJA. 10 bit precision doubles the precision twice (each bit adds an "on-off" state, doubling the possible values), creating 1024 possible values and increasing color precision significantly. The EX1 records hi definition video at 8 bit precision, 4:2:0 color subsample, MPEG2. 4:2:2, uncompressed is what comes out of the HDSDI output (technically the serial digital format would support 10 bit, but I'm not really certain what the camera is putting out...8 or 10 bit.). There are several external recorders that will take the HDSDI feed from the camera...NanoFlash, AJA KiPro, CineDeck, and others... They use various recording formats and compression techniques, and have data rates that can vary widely, as can the associated post production workflows. __________________ TimK Kolb Productions

April 24th, 2010, 06:33 PM	#7
David Issko Major Player Join Date: Jul 2008 Location: Melbourne, Australia Posts: 393	According to Convergent Design, the HDSDI o/p of the EX cameras is 10 bit 4:2:2, and yes, the nanoflash is a superb 8 bit 4:2:2 recorder that hooks up to the HDSDI o/p of the EX camera as well as HDMI output from such equipped cameras. Cheers __________________ David Issko Edit 1 Video Productions Last edited by David Issko; April 24th, 2010 at 06:35 PM. Reason: added more info

April 24th, 2010, 02:25 PM	#3
Silas Barker Major Player Join Date: Dec 2009 Location: Sacramento, California Posts: 577	Is there a recorder you can hook to the SDI? Any links to B and H video that has something? Thanks!

April 24th, 2010, 07:31 PM	#8
Dave Morrison Major Player Join Date: May 2002 Location: West Central Florida Posts: 762	Can anybody tell me what the EX-1r is outputting from its' HDMI port? Is it analog or digital? __________________ EX1, Nikon D750 http://www.morrisonphotographics.com http://www.heritagefilm.com

April 24th, 2010, 08:17 PM	#9
Serena Steuart Major Player Join Date: Jun 2006 Location: Studio Alnitak, Melbourne, Victoria, Australia Posts: 640 Images: 3	HDMI (High-Definition Multimedia Interface) is a compact audio/video interface for transmitting uncompressed digital data