OIS and Anamorphic

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On a new movie, im using the anamorphic adapter, and a number of shots will not be on a tripod. I decided that I did not want to spend the money on a (flowpod, glidecam, dvrigpro) stabilizer and go the careful handheld/ghetto homemade dollies and such. My movie is rather gritty so mayb the handheld will offer it that like a number of recent sundance films. Is there some sort of issue with using the image stabilizer and the adapter at once? I read somewhere not to do it, but it didn't explain why. If there is a problem can it be fixed? If not, is the lack of image stabilisation a great detrement for careful handheld shooting? If it is, are such stabilizers as mentioned above really worth it?(dont need perfect silky shots most of the time, remember gritty)Lastly, are cheap 90 buck shoulder mounts(varizoom, dont really isolate camera) still better tahn nothing, especially if i can't use the image stabilizer? Thanks.
 
Re: OIS and Anamorphic

ok...its been 3 days. come on guys, I really need help on my questions above. What is up with the optical image stabilizer in conjunction with the anamorphic adapter?
 
Re: OIS and Anamorphic

I can sense your frustration. I wish I knew more to tell you, but I leave OIS off. I believe, and don't quote me on this, that it may cause artifacts in the footage. Hope someone more informed can answer this for you. Best-Mike
 
Re: OIS and Anamorphic

OIS will not cause artifacts in the footage because in the DVX it is an Optical Image Stabilizer as opposed to a digital one. I can't answere the question about the anamorphic and OIS because I don't have the ana :(
Although the OIS is pretty good it is not really good enough to use it exclusively even if you do want the hand held look you still need to use some other form of stabilization, thats my opinion anyway.
 
Re: OIS and Anamorphic

Panasonic cautions not to use the OIS function or auto focus with the LA7200 anamorphic. I'm not exactly sure why but I would think because stablizing is through the optics of the camera it is unable to use the altered anamorphic image the chip recieves. I personally don't like a lot of hand held footage. For short periods its ok but after a while I begin to get fatigued from watching it. A shoulder mount would help at least do that. Glide cams work great if you have the time and patients to learn. Get the arm brace for the Glidecam it really helps.
 
Re: OIS and Anamorphic

I don't really know why there's a restriction on not using OIS with the anamorphic... I haven't tested to see whether it matters.

However, you most definitely cannot use autofocus with the anamorphic, or you will be guaranteeing that many of your shots will be out of focus. The autofocus mechanism focuses on one axis only (I think vertical) and the anamorphic causes the other axis to focus at a different plane, so if you use autofocus with the anamorphic adapter you will absolutely be getting out-of-focus footage.
 
Re: OIS and Anamorphic

.. from my limited testing, using the ois and the anamorphic causes image warping due to the anamorphic lense not being a uniformly distorting lense. lets see.. how do i say this to make it understandable?? well , basically the anamorphic lense doesnt bend light the same at the edges of the glass as it does at the center... the amount of bend changes across the glass if your looking through it from one fixed centered angle( ... like a magnifying glass ) . so when the OIS lense shifts the view of the dvx off-center to compensate for shake or movement(in any direction but looking straight through the adaptor center. ), the image gets bent/strecthed weird becuase the anamorphic glass isnt exactly designed to make a good anamorphic image when you are looking through it at an angle. it only designed to be optically correct from one centered and aligned angle.

the ois doesnt hurt the regular DVX image cause the lense is uniform.. its the same at the edges as it is in the center, and you can look through it at any place, and its the same..
 
Re: OIS and Anamorphic

i tried the OIS and anamorphic.. and it didn't look good. it ruined some shots.. but, in addition to this, also with the anamorphic, the OIS helped the car-mount shots look more stable (car was driving on bricks road!). don't know what made the car-mount set up so different, probably different frequency of shakiness, but it did work!
 
Re: OIS and Anamorphic

..probably the blur of the scene was covering up the distortions present in the car mounted scene?
 
Re: OIS and Anamorphic

Ah. Well, now that makes sense! Hadn't thought about that, but that could certainly explain the OIS restriction.
 
Re: OIS and Anamorphic

Thanks a lot. I Think I'll get a cheap shoulder mount to steady out my shots a lil. At the moment I don't have the time nor am willing to spend $400+ on a Glidecam, Flowpod or DVrigPro.(despite how cool they look!)
 
Re: OIS and Anamorphic

[quote author=Barry_Green link=board=Links;num=1088139553;start=0#5 date=06/27/04 at 15:10:13]However, you most definitely cannot use autofocus with the anamorphic, or you will be guaranteeing that many of your shots will be out of focus.  The autofocus mechanism focuses on one axis only (I think vertical) and the anamorphic causes the other axis to focus at a different plane, so if you use autofocus with the anamorphic adapter you will absolutely be getting out-of-focus footage.[/quote]

Glad to see you mention that Barry. I discovered that in the first test, but haven't seen it mentioned often enough for new users...
 
Re: OIS and Anamorphic

[quote author=shai link=board=Links;num=1088139553;start=0#7 date=06/28/04 at 09:02:09]don't know what made the car-mount set up so different, probably different frequency of shakiness, but it did work!
[/quote]

Just a guess, but the OIS/anamorphic distortion is probably only horizontal. Perhaps the car setup was mostly vertical shaking, which wouldn't have been as distorted.

Dave
 
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