/*
Yes. You may find the following example helpful. It projects a bitmap onto the scene, which, in this case is just a plane.
The bitmap is projected by placing it in front of a light source and adding a filter filtering all of the colours in the image at their full intensity ('filter all 1'). I'm not sure how you'd go about adding a depth of field.
Regards,
Chris B.
*/  

// ----------------------------------------
global_settings {
  assumed_gamma 1.0
}

sky_sphere {
  pigment {
    gradient y
    color_map {
      [0.0 rgb <0.6,0.7,1.0>]
      [0.7 rgb <0.0,0.1,0.8>]
    }
  }
}

plane {
  y, -1
  pigment { color rgb <165,157,149>/255 }
}

camera {location <-0.4,0.4,-1.4> look_at 0}
global_settings {ambient_light 0.05}
// ----------------------------------------


// Image to project
plane {z,-0.9
 pigment {
   image_map {
     png ".\enc.png"
     once
     filter all 1
   }
   scale 0.1
   translate -0.05
 }
}

// Projector
light_source {<0,0,-1>, rgb 1}
box {<-0.01,-0.01,-1><0.01,0.01,-1.03> rgb 0}
cone {<0,0,-1>,0,<0,0,-0.07>,0.5
    no_shadow   
	material{
		texture {
            pigment {rgbft <1, 1, 1, 0.9, 0.6>}
            normal {wrinkles .2 scale .3}
            finish {
            	phong 1.0
            	ambient 2
                diffuse 0.2
                specular 0.9 
                roughness .001
                reflection 0.12
			}
        }
        interior {
    		//ior 1.33
    		fade_power 1
    		fade_distance 2
    		fade_color <0.8,0.8,0.8>
    		caustics 01.16
        }   
    }
}

// Screen
box {<-0.5,-0.5,0>,<0.5,0.5,0.01> pigment {rgb 1}}

// Intruse on the screen
sphere {0 0.3 pigment {rgb <193, 216, 240>/255} translate <-.25, 0, 0>}
box {<0.3, -0.3, -0.1> <0.5, -0.1, -0.2> rotate 10 pigment {rgb 1}}