Laowa 24mm f/14 Relay lens will ship for E-mount in late 2017 – sonyalpharumors
Relay lenses and optical formulas: Photographic Science and Technology Forum: Digital Photography Review
MTF Metrology for High-NA Microscope Objectives | Features | Sep 2009 | BioPhotonics
Designing with Off-the-Shelf Lenses (Chapter 15) - Introduction to Lens Design
0.5X Reduction Lens / Relay Lens Camera Coupler C-Mount Adapter, to Convert 25mm to Microscope Eyepiece Diameter 23.2mm 30mm 30.5mm | Boli Optics Microscope Store