Carl Zeiss 25mm F2.8 Distagon T* ZE-I Specifications
Diagonal Angle of View: 81°
Maximum Magnification: 1:2.3
Minimum Aperture: F22
Number of Aperture Blades: 9
Iris Pattern: polygonal
Minimum Distance: 17cm (with a minimum working distance of 6cm)
Filter Thread: 58mm
Maximum Diameter: 64mm
Length: 66mm (90mm incl. caps)
Focus Type: floating elements, manual focus only
Full Focus Throw: 327°
E-TTL II (Distance Information): supported
Lens Hood: bayonet mounted, flower shaped, included
Produced: 2013 by Cosina
- This lens is also available as ZF, ZF.2, ZF-I (all N/F) and ZS-I (M42). The -I denotes Industrial versions with special dust and moisture sealings as well as screw-fixed aperture and focus. The 2.8/25 is not available as ZE otherwise.
- The 2.8/25 is further available as ZF-IR and ZS-IR. The IR versions also come with the position-fixing screws and special coatings allowing for better NIR transmission.
- Technical specifications were taken from the ZF.2. Add a few grams and perhaps a few millimeters to the lens' length for ZE. The extra treatments to make it ready for industrial purposes might add some weight as well.