Ideal camera settings to approximate human eye? As far as things such as Focal Length, Sensor Size, etc., what are the ideal camera settings in blender that most closely approximate the human eye?  Right now, everything in my scene seems like it is way smaller than it should be at the default settings.  I believe this is because the defaults assume a scale of 1BU = 1cm or 1mm, whereas I am using a scale of 1BU = 1 meter.  I am doing so largely because I will be constructing large indoor and outdoor scenes (including an entire city) where working with a scale of 1cm or 1mm would be too unwieldy, and possibly run into internal software limits.

Now, I realize that because blender's camera uses monocular imaging instead of binocular imaging (like the human eye) it cannot perfectly match how a human would view the scene.  However, I'm not looking for perfection: I'm looking for a close approximation that is "good enough".
The default in Blender assumes 1 Blender unit = 1 meter, so you're actually on the right track there.

As for the question regarding a match on the human eye, that's a tough one. Not just because of the monocular/binocular thing, but also because your retina is curved and most cameras and digital approximations assume a flat sensor. 

That said, I've done a bit of my own research on this (reading advice from photographers is interesting... not always accurate, but interesting :) recently and landed on the following settings that seem to work reasonably well:


Camera Sensor - 35mm
Camera Focal Length - 45mm


Clipping distances, you'll need to adjust to taste.