When to use OIS? 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 GL Series DV Camcorders

Canon GL Series DV Camcorders
Canon GL2, GL1 and PAL versions XM2, XM1.


Reply
 
Thread Tools Search this Thread
Old July 8th, 2003, 05:51 AM   #1
Regular Crew
 
Join Date: Jan 2002
Location: London
Posts: 189
When to use OIS?

What are good examples of situations to use the Optical Image Stabilisation function?

Is it best for hand-held work where there is minimal camera movent? I was doing some hand-held work at the weekend while walking along and ended up switching the function off (along with Frame mode) to try to get the footage to look smoother.

The XM-2 user manual is very sparse - pretty much all it says about it is how to turn it on and off and not to use it for tripod shots...

Can anyone shed some light on when it is most practical, and when it is not, to use this function?

Thanks
Justin Morgan is offline   Reply With Quote
Old July 8th, 2003, 06:52 AM   #2
Obstreperous Rex
 
Join Date: Jan 2001
Location: San Marcos, TX
Posts: 26,900
Images: 513
When shooting from a tripod, it's very important to turn OIS (Optical Image Stabilization) off, otherwise you'll encounter a serious problem: OIS wants to dampen movement (that's what it's designed to do). If your camera is mounted on a tripod, the only movement you have is that movement which you intend to do, such as a pan. Lacking any other extraneous movement, OIS will try to fight your panning, resulting in an undesirable stuttering pan. Likewise, when you do a zoom, OIS wants to counteract that change and you'll see a jump in the image at the end of your zoom. Therefore, be sure to switch OIS to the off position whenever your camera is mounted on a tripod. And don't operate the camera in Green Box (easy recording) mode from a tripod, as OIS is always on in this mode (even when the OIS switch on the lens is set to the off position). Hope this helps,
__________________
CH

Search DV Info Net | DV Info Net Sponsors | A Decade (+5) of DVi | ...Tuesday is Soylent Green Day!
Chris Hurd is offline   Reply With Quote
Old July 8th, 2003, 06:55 AM   #3
Obstreperous Rex
 
Join Date: Jan 2001
Location: San Marcos, TX
Posts: 26,900
Images: 513
OIS does not adversely affect image quality (except when misused, as described in my post above). OIS is an optical process working through a mechanical var-angle prism; this doesn't degrade the image. EIS (electronic image stabilization) definitely results in a hit in resolution, although recent next-generation EIS systems found in newer camcorders such as the Optura 20 are much cleaner than their predecessors. Hope this helps,
__________________
CH

Search DV Info Net | DV Info Net Sponsors | A Decade (+5) of DVi | ...Tuesday is Soylent Green Day!
Chris Hurd is offline   Reply With Quote
Old July 8th, 2003, 07:20 AM   #4
Regular Crew
 
Join Date: Jan 2002
Location: London
Posts: 189
Thanks for the replies - but I'm still not clear about WHEN I should actually use OIS.

I know not to use it when on a tripod (as it says in the manual) - does that mean that it's advisable to use OIS for EVERY shot that is not tripod mounted?
Justin Morgan is offline   Reply With Quote
Old July 8th, 2003, 07:41 AM   #5
Regular Crew
 
Join Date: Jun 2003
Location: Gothenburg, EU
Posts: 35
Ok dont use it on the tripod=) but I think you should use it when you shoot handheld and it's many moves, maybe unpredictible moves and stuff like that.
__________________
- jeha!
Jesper Hallen is offline   Reply With Quote
Old July 8th, 2003, 08:46 AM   #6
Wrangler
 
Join Date: Apr 2003
Location: Philadelphia, PA
Posts: 2,898
I think you should use OIS for any handheld shots. Besides- you can only keep your arm so still- especially in the telephoto range.

Tripod: Never use OIS
Handheld: Always use OIS
Glen Elliott is offline   Reply With Quote
Old July 8th, 2003, 02:37 PM   #7
Major Player
 
Join Date: Feb 2003
Location: Pensacola Fl.
Posts: 627
I use a rolling tripod with image stabilization on and I get great moving shots around my subject as long as the floor is smooth.

I like the rolling tripod so much that I am having a custom one made with big locking wheels
Ron Little is offline   Reply With Quote
Old July 9th, 2003, 08:33 AM   #8
Regular Crew
 
Join Date: Feb 2003
Location: new jersey
Posts: 151
as they all say...using a tripod turn off the OIS
going handheld turn it on unless you are confident with your shooting.......
Luke Gates is offline   Reply With Quote
Old July 10th, 2003, 12:08 AM   #9
Obstreperous Rex
 
Join Date: Jan 2001
Location: San Marcos, TX
Posts: 26,900
Images: 513
There is a certain shooting situation where you should not use OIS, and that is at night with streetlights, floodlamps or stadium lights present. The vari-angle prism will show reflections appearing as "dancing fireflies" around these light sources. Commonly, this issue is mistakenly attributed to a UV filter (if you're using one), but usually it is indeed caused by OIS. This is an unfortunate by-product of the otherwise excellent vari-angle prism technology within OIS. Hope this helps,
__________________
CH

Search DV Info Net | DV Info Net Sponsors | A Decade (+5) of DVi | ...Tuesday is Soylent Green Day!
Chris Hurd 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 > Canon GL Series DV Camcorders

Thread Tools Search this Thread
Search this Thread:

Advanced Search

 



Google
 

All times are GMT -6. The time now is 08:51 PM.


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