Camera Matching Stills

[ZFact]

I have attached a screenshot of the photographs

file info exif...

 

Im still a bit lost with this one...

 

I normally just eye the rendering into the existing

photo but I would like to learn a more scientific

method for doing it. I know there are countless

threads about this but iv found them very hard to follow.

 

Perhaps if someone could translate the info given in

the screenshot into C4D camera info i might better

understand.

 

Any help or advice would be greatly appreciated.

 

 

 

thanks

[jackb602]

I'm not sure what to make of the EXIF data you posted, but Arndt has developed a great camera matching plugin for Cinema called PhotoMatch. It works very well, and his support is top notch.

Jack

[STRAT]

whats exif???

 

i always eye it up. even with given data, you'll find that a 3d camera is quite different to a real camera.

[William Alexander]

efix is meta data embedded with the photo containing camera information, exposure, FOCAL LENGTH , exposure, fstop...... most above average digi cams embed all the information about the photo that pertians to taking the variables out of doing camera matching. Still have to eye ball, with out an application/plugin but you don't have to guess about many things. Even many plugins or cam match/match moving applications much of this efix data can help simplify and speed up the process. i.e. matchmover, boujou, image modeler....

 

For that matter most of the camera distortion plugins for PSD (removing lens distortion) either has mch of the camera info as a .dat file or you can enter it (if it's embedded in the efix) to get proper distortion correction.

 

Explaining how to use it.......long convoluted explaination unless one has a good grasp on how cameras, specifically digi cameras, function-the science/math/geometry behind it.

 

There is much info out on the web.... "camera matching" will be a good place to start a search.

 

Sorry, wish I could do a decent job of explaining it

WDA

[seyahmit]

Check out this thread. After reading this and making the adjutments to my max camera, everything fell into place.

 

 

http://www.cgarchitect.com/vb/showthread.php?t=13862&highlight=exif

 

-Tim

[ZFact]

Check out this thread. After reading this and making the adjutments to my max camera, everything fell into place.

 

Im still lost.. forgive my stupidity

I read the thread and followed the link to retrieve the

spec of my camera. Sensor size is - 1/2.7" (5.27X3.96mm)

 

How do you convert the sensor size into the sensor diagonal?

 

I would greatly appreciate it if you could show me the calculation

with the given figures step by step. My camera is a canon ixus ii.

 

Thanks for the help

[Chris_Mac]

 

Im still lost.. forgive my stupidity

I read the thread and followed the link to retrieve the

spec of my camera. Sensor size is - 1/2.7" (5.27X3.96mm)

 

How do you convert the sensor size into the sensor diagonal?

 

I would greatly appreciate it if you could show me the calculation

with the given figures step by step. My camera is a canon ixus ii.

 

Thanks for the help

 

If your sensor size is 5.27mm then input that as your aperture width in the C4D camera.

 

Then take the focal length from the EXIF data and input that as your focal length in your C4D camera.

 

...that should do it.

[ZFact]

 

If your sensor size is 5.27mm then input that as your aperture width in the C4D camera.

 

Then take the focal length from the EXIF data and input that as your focal length in your C4D camera.

 

...that should do it.

 

If the focal length is 173 / 32... what figure do you put into the

focal length for the C4D camera?

[eoghan]

when you get the focal length of most digital cameras its not a true focal length that can be translated into your virtual camera in cinema. i.e. in film cameras the plate that the image is exposed on is 1x1-which means when you took a photo with a 50 mil lens it was a 50 mil photo. however most digital cameras have a value of 1x1.5 or 1x1.4 so usually if you take a shot with a 50 mil camera it works out at around 75 mil in real terms. you chould find out what the translation is for your camera-where you find that im not too sure sorry!