Isee4K - something is wrong ?

[Adam Jedrzejewski]

Hi Im doing Pre-vis for my upcomming project I wanted to make it very accuracy. So Ive tried Isee4K and its really great tool but:

Ive made a simple test. In RedAngle Ive tried such a preset
100 mm lens
3 meters distance
RED 4K sensor size

Ive caluculaded it.. - frame size at this distance and it was:
0.66m / 0.37m

Ok to this moment everything is fine. But I wanted to check it in my 3D software so I opened Cinema 4D and made the same "scene" in it. And thats my problem my frame size in cinema dosent match my frame from iSee4K calculations . Red squere is representation of my frame size from iSee4K. Apeture size was set to 24,4

Ok. Maybe something is wrong with Cinema so I tried the same test in 3D Studio Max. Result was the same. even after rendering frame to 720P my red squeres from both programs are the same.

As you can see field of view in both programs doesn't match iSee4K

Maybe Im doing something wrong or iSee4K is calculating something in wrong way ?

Im adding screenshoots from this "project" as reference

http://img841.imageshack.us/f/scr009.jpg

http://img685.imageshack.us/f/scr010.jpg

Any Ideas ?

Thanks

 

[Adam Jedrzejewski]

Ok I`ve got it. Aperture Width in iSee4K is 22,12. Thats why my mistake. Sorry about it but maybe it will be usefull for someone. Apertures sizes can be found in RedAngle Preferences panel.

Cheers to iSee4K great job

EOT