Sharpness at DVinfo.net

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

Canon XH Series HDV Camcorders
Canon XH G1S / G1 (with SDI), Canon XH A1S / A1 (without SDI).


Reply
 
Thread Tools Search this Thread
Old March 26th, 2007, 06:48 PM   #1
Regular Crew
 
Join Date: Oct 2005
Location: Washington, DC
Posts: 85
Sharpness

I've tried all the presets from the library and one thing I've seen is what looks like something that is about ready to moire (kind of a shimmering of the area) when there' s a lot of detail in an image or someone wearing herringbone or tight stripes. So looking at a 42" plasma I played with the sharpness settings and found if I cranked it down to -9 this seemed to help quite a bit. Anyone else seeing this? I had heard one opinion from a Hollywood DP that if you're shooting HD, you don't need the extra sharpening a detail circuit adds (I'm guessing this is what Canon calls "sharpen") and he turns it to zero.
Geoff Dills is offline   Reply With Quote
Old April 9th, 2007, 02:17 PM   #2
Regular Crew
 
Join Date: Jan 2007
Location: Parkville, MO
Posts: 30
I have seen this shimmering/pulsing moire effect when filming bird plumage that had very fine detail black lines surrounded by an amber color. This is the only time I have seen this effect, and it was very brief. I would not think that you would need to turn your sharpness down to -9 to avoid it. I think you would certainly eliminate this artifact, but creating soft images in the process. "0" sharpness should be fine in my opinion unless you are looking for a special soft look. Anything beyond that would seem like overkill.
Ray Lindsay is offline   Reply With Quote
Old April 9th, 2007, 02:25 PM   #3
Major Player
 
Join Date: Mar 2007
Location: Philly,PA
Posts: 360
i've seen it on everything i have shot with a pattern..more so on white horizontal lines.

it seems to be worse in SD and at frame rates other than
60i.

Anyone else?
Eric Weiss is offline   Reply With Quote
Old April 9th, 2007, 03:18 PM   #4
Major Player
 
Join Date: Dec 2006
Location: Los Angeles, CA
Posts: 959
Try using HDF on high. This seems to minimize any shimmer.

Bill
Bill Busby is offline   Reply With Quote
Old April 9th, 2007, 03:25 PM   #5
Regular Crew
 
Join Date: Jan 2007
Location: Parkville, MO
Posts: 30
Quote:
Originally Posted by Bill Busby View Post
Try using HDF on high. This seems to minimize any shimmer.

Bill
Hi Bill, it seems "every positive action has an equal and opposite reaction". What would be the downside of setting the HDF to high?
Ray Lindsay is offline   Reply With Quote
Old April 9th, 2007, 03:46 PM   #6
Major Player
 
Join Date: Mar 2007
Location: Philly,PA
Posts: 360
HDF on high took the shimmer away on slightly noisy areas with no other real notice in picture quality.

-9 took it away on the most noisy areas with only a slight softness to the pic.

I just added them both to presets. Thank you.

I think overall encoding on your finished work could also lessen this artifact.
To me, it looks like interlace flicker. Which is curious, as it appears the worst on SD at 24f.

I see it quite often on PBS shows shot on HDV.
Eric Weiss is offline   Reply With Quote
Old April 9th, 2007, 04:17 PM   #7
Major Player
 
Join Date: Dec 2006
Location: Los Angeles, CA
Posts: 959
Yea, HDF on high is subtle, but can be effective without altering much else.

Did anybody see Raines last week? Horrible shimmer on a lot of exterior shots with detail. I was amazed.

Bill
Bill Busby 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 XH Series HDV Camcorders

Thread Tools Search this Thread
Search this Thread:

Advanced Search

 



Google
 

All times are GMT -6. The time now is 01:05 PM.


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