The 4x Aspheric Loupe from Rodenstock will minimize stray light even against very bright backgrounds. The base is built with a sliding hood that easily converts the loupe from opaque (for viewing film) to clear (for prints or ground glass focusing).
The multi-coated glass has been chosen for its high-quality and ability to minimize reflections. Your image will be sharp edge-to-edge, free from any distortion. The detachable neck strap gives you the freedom to roam around your office or studio and have the loupe handy when you need it.
4x Aspheric Loupe
Detachable Neck Strap