The Silvestri #5030 Monocular Reflex Viewer fits their 5x7 Sliding Adapter, and allows comfortable upright viewing on a bright ground glass. The 5x7 Sliding Adapter is made to Silvestri's "4-point" rear mounting flange, meaning that it directly fits the Bicam/Bicam II, S5 micron, and T30 cameras but can also be easily adapted to many large format cameras.
Using the wide field of view of the large format lens attached to the camera and composing with this fine monocular viewer, you compose then capture and slide the adapter to do it all again with some of the remaining image circle. This doubles your file size and allows for more expansive, encapsulating images.
For the 5x7 Sliding Adapter (which fits Bicam/Bicam II, S5 micron, and T30)
Allows upright viewing at ~90° angle, but can be rotated to other angles as needed (view is always at ~90° angle from optical axis, whether aside/above/below camera)
Clips directly to Sliding Adapter's ground glass
Soft rubber eyeguard
Made in Italy
In the Box
Silvestri 6x9cm Rotating Monocular Reflex Viewer for 5x7 Sliding Adapter