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Laowa 25mm f/2.8 2.5-5X Ultra Macro Lens for Pentax K
Laowa
| Products ID: | 195128 |
|---|---|
| Manufactured by: | Laowa |
| Availablity: | SOLDOUT! |
| EAN: | 6940486700596 |
Delivery options to:
Choose countryThe Laowa 25mm f/2.8 2.5-5X Ultra Macro is a specialized manual focus lens built for extreme close-up imaging on full-frame Pentax K mount cameras. Operating exclusively within a 2.5:1 to 5:1 magnification range, it captures subjects at scales significantly greater than life-size.
Optical Design and Depth of Field
The 25mm wide-angle optical formula provides greater depth of field at high magnification compared to telephoto macro designs. Its construction consists of 8 elements in 6 groups, including an extra-low dispersion (ED) glass element that minimizes chromatic aberrations and color fringing to preserve edge-to-edge sharpness.
Compact Barrel and Working Distance
Designed with a slim, compact barrel, the lens allows ample ambient or artificial light to reach the subject. It provides a practical working distance of 45mm at 2.5:1 and 40mm at 5:1 magnification, supporting convenient operation in the studio or field.
- Magnification range from 2.5:1 to 5:1
- Minimum focusing distance of 17.3cm (5x) to 23.4cm (2.5x)
- Manual focus operation for precision control
- 8-blade aperture with f/2.8 maximum aperture
| Focal Length | 25mm |
|---|---|
| Max. Aperture | f/2.8 |
| Angle of View | 10.3° |
| Format Compatibility | Full Frame |
| Lens Structure | 8 elements in 6 groups |
| Aperture Blades | 8 |
| Min. Focusing Distance | 17.3 (5x) – 23.4 (2.5x) cm |
| Max. Magnification | 5x |
| Focus Mode | Manual Focus |
| Filter Thread | N/A |
| Dimensions | 82 x 65 mm |
| Weight | 400 g |
| Mount | Pentax K |
What is the magnification range of this lens?
This lens operates within a magnification range of 2.5:1 to 5:1 (2.5x to 5x).
What is the working distance when photographing subjects?
The working distance from the front of the lens to the subject is 45mm at 2.5:1 magnification and 40mm at 5:1 magnification.
Does this lens feature autofocus?
No, this is a manual focus lens designed for exact focusing distance adjustments during macro photography.
