The Silvestri 5010 Bellows Viewer is a collapsible viewing bellows made to be used with the D7023 series 5x7 sliding backs. It comes with a 4x achromatic magnifier lens for critical ground glass focusing. Removing the 4x lens allows you to easily see the entire image area in bright light without the need for a focusing cloth.
Made to fit the D7023 series 5x7 Sliding Back Adapters
Allows both critical focusing and shaded all-over image observation
Collapses into small space for travel
Fold-down soft rubber eyeguard