- Fixed focus design: The lens is modified so that it cannot focus to infinity, establishing a constant, defined working distance for predictable close-range imaging. - Internal thread side: M53x0.75 thread. - External thread: M58x1 thread. - Thickness: 4.6 mm. Key benefits - Reliable close-range performance: With infinity focus removed, you get a stable focal plane at a set distance, reducing refocusing and alignment adjustments during use. - Easy integration: The specified internal and external threads enable straightforward mounting with compatible adapters and hardware. - Compact and lightweight: A thickness of 4.6 mm supports slim, low-profile installations without adding bulk. - Clear, repeatable results: Consistent mounting and fixed focus help reproduce imaging conditions across multiple setups or sessions. Compatibility and usage notes - Accepts components with matching interfaces: internal M53x0.75 mounting and external M58x1 connections. - Suitable for setups where a defined working distance is required, and infinity focus is not needed or desired. - Use with accessories and adapters designed for the M53x0.75 and M58x1 thread standards to ensure secure mounting and alignment. 2-3 practical use scenarios - Macro close-up imaging: Ideal for photographing small subjects at a fixed distance, such as electronics components, gemstones, or detailed textures where consistent focus is important. - Fixed-distance inspection: Useful in production or quality-control environments where a defined focal plane enables repeatable imaging of parts moving along a production line. - Custom optical assemblies: Beneficial in prototyping or experimental rigs that require a compact, low-profile lens with a reliable, non-adjustable focus for stable alignment.