http://screencast.com/t/UKoqUGD44 [screencast.com]
http://screencast.com/t/s3iKkKk8 [screencast.com]
Of course I do not need perfect match, but something I can work with.
I read this several times but honestly I am still not sure what to do

http://www.sidefx.com/docs/houdini9.5/ref/cameralenses [sidefx.com]
Can anyone help, links, tips, anything …?