Explore the Invisible World
The Walan 25mm F2.1 is a specialized ultra-macro lens designed for extreme close-up photography, offering an impressive 2x to 5x magnification range. This lens opens up an extraordinary world of detail invisible to the naked eye, making it perfect for scientific documentation, product photography, and artistic exploration of microscopic subjects.
Key Features:
- Exceptional Magnification Range – Continuous 2x to 5x magnification for extreme close-up photography
- Full-Frame Coverage – Optimized for full-frame sensors with excellent edge-to-edge performance
- Bright f/2.1 Aperture – Fast maximum aperture with 8-blade diaphragm for precise depth of field control
- High Numerical Aperture (NA=0.1) – Superior light gathering and resolution for critical detail capture
- Precision Optics – Advanced optical design with 436-656nm working wavelength optimization
- Manual Control – Smooth manual focus and aperture rings for precise creative control
Specifications:
- Focal Length: 25mm
- Magnification: 2x-5x continuous
- Aperture Range: F/2.1-16 (NA=0.1)
- Image Format: Full Frame
- Mount: Sony E
- Focusing Range: 37.5mm-45mm (working distance)
- Diaphragm Blades: 8 blades
- Back Focal Length: 40.5mm-115mm (varies with magnification)
- Working Wavelength: 436-656nm
- Relative Illumination: >0.45
Ideal For: Scientific research, insect and botanical macro photography, product detail shots, jewelry photography, electronics inspection, forensic documentation, and artistic abstract photography.
