What exactly is the Vertical Detail setting doing? at DVinfo.net

Go Back   DV Info Net > Canon EOS / MXF / AVCHD / HDV / DV Camera Systems > Canon HDV and DV Camera Systems > Canon XL and GL Series DV Camcorders

Canon XL and GL Series DV Camcorders
Canon XL2 / XL1S / XL1 and GL2 / XM2 / GL1 / XM1.


Reply
 
Thread Tools Search this Thread
Old September 5th, 2007, 07:00 PM   #1
Regular Crew
 
Join Date: Nov 2005
Location: New Orleans, La. & Livingston, Mont. USA
Posts: 40
What exactly is the Vertical Detail setting doing?

I am trying to find out what the electronics on the XL2 are doing behind the scenes with respect to the Vertical Detail setting. I know the manual says its purpose is to get rid of flickering when progressive material is played back on interlaced monitors, but I'm trying to discover how it goes about doing that.

On another forum a friend of mine has encountered the suggestion that the setting funtions by applying some form of sharpening to the image in the [NORMAL] mode, while the [LOW] mode is the unmodiifed data from the CCD.

Canon USA tech support had this to say:

---
The Vertical Detail feature works by adjusting the frequency of the
vertical line information gathered from the CCD chips. This is indeed
an algorithm formula, however, the specific formula has not been
released to us by Canon Inc.
---

We're wondering what this means.

Does anybody know anything about this?

Regards,
Henry
Henry Clayton is offline   Reply With Quote
Old September 9th, 2007, 04:29 AM   #2
Regular Crew
 
Join Date: Nov 2005
Location: New Orleans, La. & Livingston, Mont. USA
Posts: 40
Solved

I was able to determine in correspondence with Canon USA that the vertica ldetail setting applies a sharpening algorithm, & that the [NORMAL] setting has the greater sharpening, while [LOW] is closer to the data off the CCD.

H.
Henry Clayton is offline   Reply With Quote
Old September 9th, 2007, 09:29 AM   #3
Trustee
 
Join Date: Dec 2004
Location: Lipa City Batangas, Philippines
Posts: 1,110
Hi Henry. Doesn't sound very likely. What would be the purpose of the sharpening algo in the first place? The image from the XL2 lens/sensor block is already at a high resolution relative to DV resolution which is why there are flicker problems when shooting fine detail with this cam. It would be good to get more detail of what the sharpening algo is supposed to be for, but I doubt if it will be forthcoming.

Richard
Richard Hunter is offline   Reply
Reply

DV Info Net refers all where-to-buy and where-to-rent questions exclusively to these trusted full line dealers and rental houses...

Professional Video
(800) 833-4801
Portland, OR

B&H Photo Video
(866) 521-7381
New York, NY

Z.G.C.
(973) 335-4460
Mountain Lakes, NJ

Abel Cine Tech
(888) 700-4416
N.Y. NY & L.A. CA

Precision Camera
(800) 677-1023
Austin, TX

DV Info Net also encourages you to support local businesses and buy from an authorized dealer in your neighborhood.
  You are here: DV Info Net > Canon EOS / MXF / AVCHD / HDV / DV Camera Systems > Canon HDV and DV Camera Systems > Canon XL and GL Series DV Camcorders

Thread Tools Search this Thread
Search this Thread:

Advanced Search

 



Google
 

All times are GMT -6. The time now is 12:25 AM.


DV Info Net -- Real Names, Real People, Real Info!
1998-2017 The Digital Video Information Network