The Digital Video Information Network - View Single Post - What is this circular background blur, home made DOF Adapter

Craig Turner · June 10th, 2008, 09:22 PM

Hi all

I have recently completed my first prototype DOF adapter. Utilising a vibrating wax GG.

I am just curious about a slight problem I am noticing which is beyond my knowledge of lenses.

It is attached and appears as a circular blurring of the out of focus background? It doesn't appear to affect the focused portions of the image and isnt following the vibrating pattern either which is almost vertical.

Only thing I can think of is the GG is too transparent?? not sure.

June 10th, 2008, 09:22 PM	#1
Craig Turner Tourist Join Date: Jul 2007 Location: Perth Posts: 4	What is this circular background blur, home made DOF Adapter Hi all I have recently completed my first prototype DOF adapter. Utilising a vibrating wax GG. I am just curious about a slight problem I am noticing which is beyond my knowledge of lenses. It is attached and appears as a circular blurring of the out of focus background? It doesn't appear to affect the focused portions of the image and isnt following the vibrating pattern either which is almost vertical. Only thing I can think of is the GG is too transparent?? not sure. Attached Thumbnails