What is depth of field?
(Quotes from Wiki)
In optics, particularly as it relates to film and photography, depth of field (DOF) is the distance between the nearest and farthest objects in a scene that appear acceptably sharp in an image. Although a lens can precisely focus at only one distance at a time, the decrease in sharpness is gradual on each side of the focused distance, so that within the DOF, the unsharpness is imperceptible under normal viewing conditions.
Depth of field from an SL manipulation point of view actually makes a capture from inworld more " realistic". Ordinarily, as all objects within a scene are virtual they are also rendered on the same specified plane (i.e your draw distance). It is your 'cinematic' eye, or camera view which then 're-renders' the scene with additional calculations for presenting this perspective of nearness and distance.
|Although depth of field is now an option in SL 3 viewers, this 'Original' capture lacks it.|
|End Credits: The final assembled image is now an application of three layers to the original; ie.|
Depth of field
and lastly a Vignette frame
which was simply a drawn black border set to blur.