View Full Version : 4x5 fresnel screen

Bryce Vader
4-May-2008, 15:43
I have purchased a used TOYO 810G camera that included a 4X5 reducing back. The 4x5 has a Beattie glass with a fresnel screen in front of the glass plate. The fresnel plate is warpped and doesn't make full contact with the ground glass. Does this affect anything with focusing or image tranfer to the ground glass? Also does the fresnel screen need to be mounted with the circular grooved side away from or against the ground glass? I am new to large format and would appreciate your expertise.