Sinar 105mm f/4 Sinaron Digital DB Lens
The Sinar 105mm f/4 DB is a 105mm f/4 lens designed for Lens Board (Technical Camera) mount cameras. Check GearFocus for current availability, with buyer protection on every purchase.
Sinar 105mm f/4 Sinaron Digital DB Lens
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Lens Overview — Sinar 105mm f/4 DB
Key Features — Sinar 105mm f/4 DB
Sinaron Digital DB Designation: Engineered specifically for digital capture, optimizing resolution and contrast for high-megapixel digital backs used on technical camera systems.
105mm Standard Focal Length: Provides a natural field of view well suited to studio, product, and architectural photography on large format and technical camera setups.
f/4 Maximum Aperture: Offers a practical exposure range for controlled studio lighting environments typical of technical camera workflows.
Large Format Optical Design: Built to cover a large image circle, supporting the demands of high-resolution digital backs and view camera movements.
Lens Board Mount: Mounts via a standard technical camera lens board interface, compatible with Sinar and other view camera systems.
Manual Focus Only: Fully manual focus operation suits the deliberate, tripod-mounted shooting style inherent to large format and technical camera workflows.
Lens Specifications — Sinar 105mm f/4 DB
| Spec | Detail |
|---|---|
| Use Cases | Product, Architecture, Studio |
| Lens Type | Prime |
| Format | Large Format |
| Zoom/Prime | Prime |
| Focal Length | 105mm |
| Maximum Aperture | f/4 |
| Camera System | Large Format |
| Lens Mount | Lens Board (Technical Camera) |
| Autofocus | No |
| Focus Type | Manual |
| Image Stabilization | None |
| Weight | 1200g |
Description — Sinar 105mm f/4 DB
The Sinar 105mm f/4 Sinaron Digital DB Lens is a large format, prime optic built for medium format camera systems. Operating at a fixed 105mm focal length — placing it in the standard focal length range — this lens is mounted via a Lens Board (Technical Camera) interface, making it purpose-built for technical camera platforms. The lens features a maximum aperture of f/4 and relies entirely on manual focus, with no autofocus mechanism.
There is no image stabilization, consistent with the tripod-centric workflows that large format photography demands. Weighing 1,200g, this is a substantial piece of glass that reflects the engineering involved in large format optical design. The Sinaron Digital DB designation points to its intended use with high-resolution digital capture systems.
For photographers working in studio, architectural, or product environments who value precision, manual control, and a large format imaging approach, this lens offers a clearly defined and purposeful set of capabilities.
Pros — Sinar 105mm f/4 DB
- ✓Fixed 105mm focal length offers a standard field of view well-suited to versatile studio and technical shooting
- ✓Maximum aperture of f/4 provides a workable exposure latitude for controlled lighting environments
- ✓Large format lens design targets the high-resolution demands of medium format digital systems
Cons — Sinar 105mm f/4 DB
- ✗No autofocus support — manual focus only, which may limit shooting pace in fast-moving scenarios
- ✗At 1,200g, the lens is heavy and will require a robust tripod and head setup
- ✗No image stabilization, making handheld use impractical