Whatīs better? Optical Filters pre or post proccesing? 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 September 29th, 2008, 12:29 PM   #1
Regular Crew
 
Join Date: May 2008
Location: Canary Islands
Posts: 54
Whatīs better? Optical Filters pre or post proccesing?

Hi all,
I have this dude, I know polarizing filters do a great job, but I like to explain something. I recorded a leopard in zoo protected by a heavy methacrylate glass and the transparency and contrast was really terrible due to adverse ligth. I thought that was a lost file. Anyway, at home I play a litlle with that file in Sony Vegas Video, using curves, profiles, contrast, etc. and the final result was pretty good, usable and now the file is in a family video.
Filmed with my HV 30, not a perfect focus, but enough to see the effect.
So, if you use a polarizer, what is easier?, reducing contrast and saturation got with the optical filter or raising up leves by software? What do you prefer?

Thanks
Attached Thumbnails
Whatīs better? Optical Filters pre or post proccesing?-original.jpg   Whatīs better? Optical Filters pre or post proccesing?-processed.jpg  

__________________
Canon XH A1; Canon HV30; Nikon D300; Nikon D200; Sony Vegas Pro
http://www.juanparmenides.com
Juan Parmenides is offline   Reply With Quote
Old September 29th, 2008, 02:11 PM   #2
Contributor
 
Join Date: Jan 2003
Location: Kansas City, MO
Posts: 4,449
I would use a polarizer if you have one.
Bill Pryor is offline   Reply With Quote
Old September 29th, 2008, 03:58 PM   #3
Regular Crew
 
Join Date: May 2008
Location: Canary Islands
Posts: 54
Thanks, Bill. By the way, I have one Kenko pro polarizer 72mm from my photography gear, circular polarizer.
But I am asking the following, does the light rays go the same way to one CCD/CMOS captor from a DSLR camera that to three independent CCD , R, G, B?
A bit confused this way.

Thanks again.
__________________
Canon XH A1; Canon HV30; Nikon D300; Nikon D200; Sony Vegas Pro
http://www.juanparmenides.com
Juan Parmenides is offline   Reply With Quote
Old September 29th, 2008, 04:33 PM   #4
Trustee
 
Join Date: Jan 2008
Location: North Conway, NH
Posts: 1,745
The answer appears to be no, based upon what I know. There's anecdotal evidence insofar as you need to use a circular polarizer with a DSLR and you can use a linear polarizer on the A1.

Rather than a bunch of us giving you dribs and drabs about the differences between the two, you'd probably be better served by checking out these links.

Digital single-lens reflex camera - Wikipedia
3 CCD Structure - Wikipedia

To answer your original question, it's generally best to get it right through the lens and then use tools in post to refine the image.
Tripp Woelfel is offline   Reply With Quote
Old September 29th, 2008, 05:52 PM   #5
Contributor
 
Join Date: Jan 2003
Location: Kansas City, MO
Posts: 4,449
You can use the circular polarizer with a video camera. It's just that there's no advantage over a linear one.
Bill Pryor is offline   Reply With Quote
Old September 30th, 2008, 04:27 AM   #6
Regular Crew
 
Join Date: May 2008
Location: Canary Islands
Posts: 54
Thanks to all. I have made a little test with the Kenko polarizer attached to the Canon XH A1 and everything seems to be ok.

Cheers
__________________
Canon XH A1; Canon HV30; Nikon D300; Nikon D200; Sony Vegas Pro
http://www.juanparmenides.com
Juan Parmenides 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 08:09 PM.


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