Custom aperture maps

[Dalton Watts]

Saw this image the other day on a facebook group and I was wondering if someone knows where can I find such custom aperture maps? Paid or non-paid.

I remember that the highlighted obstacle map was included in the old Maxwell Render installation but that's about it.

[mh]

there's this selection from dof pro under aperture library
http://richardrosenman.com/shop/dof-pro/

[Dalton Watts]

I was actually at that very same page right now :) Thanks for chipping in mh!

I suppose there's no optimal resolution for these kinds of maps since these specific ones are only 210x210px. Very small resolutions can be used for them regardless of the render output size?