Iris adjustment in Tv mode - does it "step"? 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 7th, 2007, 04:55 PM   #1
Tourist
 
Join Date: Aug 2007
Location: Pittsburgh PA
Posts: 4
Iris adjustment in Tv mode - does it "step"?

When you change the iris in manual mode, it is easily noticeable with the "step" up or down. When set in Tv mode (Shutter Priority) the camera automatically adjusts the iris as necessary as lighting changes, correct? And as it changes, is it noticable in "steps" (like when controlled manually) or does it do it smoothly?

Does anyone know if an XL1 "steps" too?

Does anyone know how it "decides" to change the iris? Is it center-priority, no over-exposure priority, best overal balance priority?

Does anyone have a video of a stage (dance preferably) while set in Tv mode? I'm thinking of using this for the wide camera which will not be manned.
Stuart McKenna is offline   Reply With Quote
Old September 7th, 2007, 08:06 PM   #2
Trustee
 
Join Date: Dec 2004
Location: Lipa City Batangas, Philippines
Posts: 1,110
Hi Stuart. I'm not sure if Tv mode gives smoother stepping, but if the scene lighting changes it will definitely be obvious. (Apart from the iris setting, there is a certain response time before the adjustment is made.) The exposure is adjusted based on the average of the whole frame.

Actually, using auto mode might not give you the best results. When the stage lighting changes it is for effect, and using auto mode will negate this. Maybe you could test what happens if you set the exposure manually (to avoid too much blowout in the highlights) and just leave it like that?

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 09:52 PM.


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