What type of polarizer is needed? at DVinfo.net

Go Back   DV Info Net > Sony XAVC / XDCAM / NXCAM / AVCHD / HDV / DV Camera Systems > Sony XDCAM EX Pro Handhelds

Sony XDCAM EX Pro Handhelds
Sony PMW-300, PXW-X200, PXW-X180 (back to EX3 & EX1) recording to SxS flash memory.


Reply
 
Thread Tools Search this Thread
Old January 1st, 2008, 10:26 AM   #1
Regular Crew
 
Join Date: Nov 2007
Location: Manhattan, Kansas
Posts: 123
What type of polarizer is needed?

A really basic question: Does the EX1 need a circular polarizer, or will it function correctly with a linear polarizer?
Thanks.
Clark
Clark Peters is offline   Reply With Quote
Old January 1st, 2008, 10:56 AM   #2
Major Player
 
Join Date: Feb 2006
Location: Louisville, KY
Posts: 591
any pol that covers the lens will do its job, but unless its a circular pl the auto focus of the cam will not function.
Christopher Witz is offline   Reply With Quote
Old January 1st, 2008, 07:01 PM   #3
Regular Crew
 
Join Date: Nov 2007
Location: Manhattan, Kansas
Posts: 123
That's what I was looking for. Thanks.
Clark
Clark Peters is offline   Reply With Quote
Old January 1st, 2008, 10:41 PM   #4
Major Player
 
Join Date: May 2005
Location: Europe
Posts: 844
I am not so sure about the autofocus not functioning with a linear pol.

You *will* need a circular pol with a cam that has a pentaprism like SLRs, but it is a popular misconception that you cannot use linear pol with cams/videocams with autofocus.

Having said that, i cannot say *for sure*, but my guess is a linear pol will work fine, even with autofocus.
Stu Holmes is offline   Reply With Quote
Old January 2nd, 2008, 06:49 AM   #5
Inner Circle
 
Join Date: Sep 2006
Location: Sydney.
Posts: 2,569
I was surprised to see Schneider (B+W) filters on their site recommending a linear polarizor to go with the Canon A1.
Allan Black is offline   Reply With Quote
Old January 2nd, 2008, 10:33 AM   #6
Sponsor: Schneider Optics
 
Join Date: Aug 2007
Location: Van Nuys, CA
Posts: 387
Quote:
Originally Posted by Allan Black View Post
I was surprised to see Schneider (B+W) filters on their site recommending a linear polarizor to go with the Canon A1.
A linear polarizer is all that is required for virtually all HDV video cameras on the market today. If your camera has a beam splitter used for video bypass systems for the viewfinder, then you need a circular polarizer. Some 35mm motion picture cams have such systems and require the extra 1/4 wave plate found in circular polarizers to fool the system so that you can see through the viewfinder.

The Canon XH-A1 and pretty much all the other cams do not use this type of view finder and therefore a linear pol is sufficient. If you want to be absolutely sure, buy the circular pol it will have no negative impact and be more versital if you buy that ARRI 435 camera. :)

Ryan Avery
Schneider Optics
Ryan Avery is offline   Reply With Quote
Old January 2nd, 2008, 10:34 AM   #7
Sponsor: Schneider Optics
 
Join Date: Aug 2007
Location: Van Nuys, CA
Posts: 387
Quote:
Originally Posted by Christopher Witzke View Post
any pol that covers the lens will do its job, but unless its a circular pl the auto focus of the cam will not function.
Unfortunately, this is not true. All Autofocus functions work great on the EX1 with a linear pol or circular pol attached.

Ryan Avery
Schneider Optics
Ryan Avery is offline   Reply With Quote
Old January 2nd, 2008, 11:36 AM   #8
Major Player
 
Join Date: May 2005
Location: Europe
Posts: 844
Quote:
Originally Posted by Ryan Avery View Post
A linear polarizer is all that is required for virtually all HDV video cameras on the market today.
Aha ! This is what i thought.

Thanks for the confirmation on that Ryan.
Stu Holmes is offline   Reply With Quote
Old January 2nd, 2008, 01:33 PM   #9
Regular Crew
 
Join Date: Nov 2007
Location: Manhattan, Kansas
Posts: 123
Thanks Ryan. That will save me some shekels.
Clark
Clark Peters is offline   Reply With Quote
Old January 2nd, 2008, 05:18 PM   #10
Major Player
 
Join Date: Feb 2006
Location: Louisville, KY
Posts: 591
hmm... good to know.

I guess things have changed in the last few years.

sorry for my ignorance
Christopher Witz 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 > Sony XAVC / XDCAM / NXCAM / AVCHD / HDV / DV Camera Systems > Sony XDCAM EX Pro Handhelds

Thread Tools Search this Thread
Search this Thread:

Advanced Search

 



Google
 

All times are GMT -6. The time now is 07:56 AM.


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