>> You don't want to do that, because when your eye looks at the
>> monitor/print out obviously it will do it's logarithmic processing
>> again, so you'll get it twice and it will look weird.  Try taking a
>> photo of the view you want with the exposure you want, and getting your
>> POV generated image to match.
>
> No, there is a difference between looking at a scene like that in real
> life, where the outdoor brightness is very high, and looking at a photo
> of the same scene. The brightness of the brightest parts of the photo
> depend on the light source illuminating the photo, in the same way that
> looking at a photo of the sun is not as dangerous as looking into the sun.

Well of course a photo is limited to reflecting 100% of the incident light, 
and a monitor to its maximum brightness, but that wasn't my point.  My point 
was that you shouldn't take into account the eyes processing in your image, 
because then it's not going to look realistic.  You should aim to create an 
image where the relative brightnesses match what is in real life.  You don't 
need to worry about how your eye works, just match real life and it will 
look realistic.

Comparing your rendering with a digital photo is a good way to do this, as 
most people don't have access to expensive brightness measurement equipment. 
It also means you don't have to worry about gamma of your display device, 
just match your output pixel values to the values in the photo.

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