The Schneider Center FilterF38XL is used in correcting natural darkness that appears on the sides of the images.

• The Schneider Center Filter for 90/5.6 is used to correct illumination falloff in Super-Angulon XL 38mm extreme wide angle lens
• The filter factor of the Schneider center filter is 4x at the center and clear at the edges
• In 120/8.0 Camera Center Filter, the mounting thread is 72mm x 0.75 to fit the 38mm Super-Angulon XL lens
• Using the 82mm x 0.75 thread, additional filters can be attached in front of it
  

This is a center filter used to correct illumination falloff on the Super-Angulon XL 38mm extreme wide angle lens. It has a filter factor of 4x in the center (2 stops) and is clear at the edges. The mounting thread is 72mm x 0.75, to fit the 38mm Super Angulon XL lens. Additional filters can be attached in front, using the 82mm x 0.75 accessory thread.