Lens memory and constant image height
Stored zoom/focus/shift presets. Used for constant-image-height (CIH) 2.35/2.40:1 screens without an anamorphic lens.
- Standard
- Vendor
- ISO 21118
- Extension
How to compare it
Lens memory
0 = none. ≥3 is useful (16:9, 1.85, 2.40).
Across the catalogue
Deep cut
Lens memory. Zoom-based CIH throws away the letterbox pixels and their light. An anamorphic lens keeps them, but adds cost, distortion and pincushion.
Terms on this page
Lens memory
Stores zoom/focus/shift positions, e.g. to switch between 16:9 and 2.39:1 on a scope screen. Requires a motorised lens. ⚖ optics.lens_memory_slots