Re: real world camera

[Jeffrey Dates <jeff(at)janimation.com>]

You know, our VFX Sup showed me this application for his Palm that he swears by.  We've used it for conversion from real-world FOV to XSI with great success. 

http://www.davideubank.com/  <-- pCAM and pCINE  if you have a palm device.
http://www.pendragon-software.com/emulator.html  <-- emulate the Palm device on your PC if you don't have one.

But this easy conversion tool pretty much will give you any information you want to convert in terms that are useful in XSI.
We used it to determine what the angle of certain lenses were for previs..  etc.  It's totally awesome!!

Just thought I'd share.

JEFFREY DATES
CREATIVE DIRECTOR

Frank Lenhard wrote:

that would be great Francois!

the session with the director was yesterday and the client was impressed
by the speed we could figure out camera angles in real world measurements,
shifting set pieces around and compose a previz of a shot that will
costs them quite some money.

thanks a lot everyone who helped me out here on short notice! you
guys are awsome.


ciao
franky


Thursday, February 1, 2007, 4:42:59 PM, you wrote:

FL> Yeah, I should fix that some day.

FL> Frank Lenhard wrote:
  

thanks a lot.
i put these numbers into the film aperature size and i get the same
FoV as with the plugin. but the bonus is that i can set the focal length
directly in real world measurements inside the xsi camera.
the plugin always calculated some strange numbers.
same result though.


ciao
franky


Wednesday, January 31, 2007, 9:20:29 PM, you wrote:

MB> 2/3" 16:9 CCD just like on your Sony :  0.3775" x 0.2123"

MB> --
MB> Marc Bourbonnais
MB> 3D TD
MB> Hybride

MB> ----- Original Message ----- 
MB> From: "Frank Lenhard" <franky(at)ixdream.com>
MB> To: <XSI(at)Softimage.COM>
MB> Sent: Wednesday, January 31, 2007 1:57 PM
MB> Subject: Re[2]: real world camera


MB> thanks a lot guys.
MB> i installed that python plugin and it seems it works nice. cant verify
MB> though, because i'am unable to find the dimensions of the sensor...
MB> sigh...


MB> ciao
MB> franky


MB> Wednesday, January 31, 2007, 5:51:48 PM, you wrote:

TL>> There´s been some extensive threads on photogrammetry,
TL>> lens distortion and useful tools a couple of weeks back.

TL>> From the top of my head, LaMaison has a great shader
TL>> to add lensdistortion (on the cost of loosing motionvectors)
TL>> and many people here suggested to look into Hype (for shake)
TL>> http://www.visualappliance.com/products/hype-shake/

TL>> A collegue of mine has been playing with fotomodeler,
TL>> I myself tried the Maya>Realviz MMTrack plugin and
TL>> got useable results out of (purposedly) unknown footage.

TL>> Boiling this down, I´d figure your best bet is to lend the
TL>> camera and lesnes a day and shoot the gridpatterns you
TL>> need for distortioncorrection plus some free movement,
TL>> fixed pans and such on a visually rich location to *extract*
TL>> a closely matching camera without too much effort before shoot...

TL>> Cheers

TL>> tim


TL>> ----- Original Message ----- 
TL>> From: "Francois Lord" <francoislord(at)gmail.com>
TL>> To: <XSI(at)Softimage.COM>
TL>> Sent: Wednesday, January 31, 2007 5:38 PM
TL>> Subject: Re: real world camera


  
      

http://www.xsi-blog.com/archives/65

You will need Python installed.
http://softimage.wiki.avid.com/sdkdocs/abd457728.htm
There is a preset in the plugin called "Video HDTV 2/3" 16:9 sensor" 
which should
be pretty close to what you need.

Frank Lenhard wrote:
        
            

i could swear this was covered before, but i cant find any infos in the 
archives.

a project is coming up where we will do some serious et enheancements. i 
know the
camera which will be used
on set and i will be there too. i would like to replicate the camera as 
close as
possible beofre the shoot,
so i can work out a good animatic that will match the view angles and 
FoV of the
real world.
the camera is a Sony DVW 970WSP,
http://bssc.sel.sony.com/BroadcastandBusiness/DisplayModel?m=0&p=2&sp=11&id=79174
<http://bssc.sel.sony.com/BroadcastandBusiness/DisplayModel?m=0&p=2&sp=11&id=79174>

the lenses will be a Fujinon 7.8x22 and a Fujinon 4,8x10

i dont really know for sure how to replicate the camera in xsi. i know 
all the
properties of a xsi camera
and guess that the focal length is equal to the one that will be set on 
the lens,
but whats with the film
aperture? has this anything to do with the CCD chip and its size? and if 
so, how
the numbers relate to each
other?

thanks a lot folks

ciao
franky
          
              

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