CompuServe Messages

#Lenzfx

    26-Dec-94 15:18:46
Sb: #142770-#Lenzfx
Fm: Scott Roberts 75604,1712
To: Aaron W. Ostler 74672,127
<<Actually, with a real camera, a reflection of an object can be in perfect focus while the object itself is completely blurred. Remember in the old movies when some fabulous movie star would be sitting in front of her mirror and her reflection in the mirror would be focused while the back of her head would not. What you are actually focusing in on is the light reflected from the mirror's surface, not from the object causing the reflection.>> I understand this, but this isn't whats happening in the sample image. The table is in focus, the wall isn't in focus, and the reflection of the wall is in focus. I you can come up with a rational explanation of this phenomena I'd like to hear it. In the example you cite I would imagine that the mirror she is using would not be in focus, or if it was then the depth of field is set just beyond the foreground. In that example the focal distance to the woman's reflection is the distance from the camera to the mirror plus the distance from the woman to the mirror. In your sample image the distance to the reflection on the table is closely related to the distance from the camera to the wall itself, if not further. I'm no physicist, so I could be way off base here, but I have been interested in optics and perception for a few years. If the product works according to optical physics, put me down for a copy now thanks, scott