Leica APO-Telyt-R 400/560/800mm Lens Head
The Leica 11842 is a 400–800mm f/5.6 lens designed for Leica R mount cameras. Check GearFocus for current availability, with buyer protection on every purchase.
Leica APO-Telyt-R 400/560/800mm Lens Head
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Lens Overview — Leica 11842
Key Features — Leica 11842
Modular Three-Focal-Length System: Pairs with compatible Leica R modules to deliver 400mm, 560mm, or 800mm coverage from a single optical head.
APO Apochromatic Correction: Apochromatic optical design brings all wavelengths of light to a common focal plane, minimizing chromatic aberration at extreme telephoto distances.
f/5.6 Maximum Aperture: Consistent f/5.6 aperture across all three focal length configurations allows predictable exposure and depth-of-field control.
Full-Frame Coverage: Designed for Leica R full-frame bodies with no vignetting or image circle compromise at any of the three focal lengths.
Leica R Mount: Native Leica R mount with broad third-party adapter availability, enabling use on modern mirrorless and DSLR systems from other manufacturers.
Manual Focus Only: Precision manual focus ring places full control with the photographer, suited to deliberate shooting disciplines such as wildlife and nature.
Lens Specifications — Leica 11842
| Spec | Detail |
|---|---|
| Use Cases | Wildlife, Sports, Birding, Adventure |
| Lens Type | Super Telephoto |
| Format | Full Frame |
| Zoom/Prime | Prime |
| Focal Length | 400–800mm |
| Maximum Aperture | f/5.6 |
| Camera System | DSLR |
| Lens Mount | Leica R |
| Autofocus | No |
| Focus Type | Manual |
| Image Stabilization | None |
| Filter Thread | 95mm |
Description — Leica 11842
The Leica APO-Telyt-R 400/560/800mm Lens Head is a super telephoto prime lens head built for the Leica R mount, designed for use on full-frame DSLR camera systems. Operating as part of a modular system, it covers focal lengths from 400mm to 800mm depending on the paired module, giving photographers meaningful reach for demanding long-distance subjects. The maximum aperture is f/5.6, and the lens is strictly manual focus with no image stabilization.
A 95mm filter thread sits at the front, and the unit weighs 3,000g, making proper support equipment essential. This is a deliberate, precision-oriented lens head for photographers who prioritize optical performance at extreme telephoto distances and are comfortable working with manual focus techniques.
Pros — Leica 11842
- ✓Modular system covers three focal lengths — 400mm, 560mm, and 800mm — from a single lens head
- ✓Full-frame coverage ensures no crop or vignetting on Leica R full-frame bodies
- ✓Large 95mm filter thread accommodates high-quality front-mounted filters suited to super telephoto shooting
Cons — Leica 11842
- ✗Manual focus only — no autofocus support, which is a significant limitation for fast-moving subjects at 400–800mm
- ✗No image stabilization, making handheld shooting at these focal lengths extremely challenging
- ✗At 3,000g, the lens head alone is heavy and will require substantial support equipment