Irix 11mm f/4.0 Firefly Pentax

Irix 11mm f/4.0 Firefly Pentax – Extremely wide-angle with low distortion

Irix 11mm f/4.0 Firefly is a manual focus lens designed for DSLR cameras with an impressive 126° field of view. This lens is perfect for photographers and filmmakers looking for a high-quality solution for landscape photography, architecture, and other situations where a wide angle is necessary. With its low distortion and robust construction, this lens is designed to meet the needs of both amateurs and professionals.

Features and Benefits

This extremely wide-angle lens has a rectangular design that allows you to capture broad landscapes and large buildings without experiencing the typical distortion often associated with such lenses. With a distortion of only 3.13% and a construction that includes 4 high-refractive lenses, 2 ED lenses, and 3 aspherical lenses, outstanding image quality is ensured. Irix 11mm f/4.0 Firefly is easy to use with its ergonomic focusing ring, which has a rubberized surface for a comfortable grip.

The weather-protected construction shields the lens from dust and moisture, making it ideal for use in varying weather conditions. This model is particularly equipped with three rubber seals that protect the camera mount and focusing mechanism from accidental splashes and dirt. Additionally, gel filters can be used on the back of the lens, increasing its versatility.

Specifications

• Image Size: 35mm "Full Frame"
• Focal Length: 11mm
• Field of View: 126° (diagonal)
• Focusing Range: 0.275 m (0.9 ft)
• Focusing Type: Manual with lock function and focus confirmation
• Aperture Range: f/4 – f/22
• Aperture Control: Via camera
• Aperture Shape: 9 rounded blades
• Lens Construction: 16 elements in 10 groups (4x HR, 2x ED, 3x ASP)
• Front Filter Thread: No
• Rear Filter Thread: 30 x 30mm
• Dimensions: 118 x 100 mm
• Weight: 730g

Frequently asked questions

What is the angle of view for the Irix 11mm f/4.0 Firefly Pentax?
The angle of view is 126° (diagonal).

What type of focusing does the lens have?
The lens has manual focusing with a locking function and focus confirmation.

How much distortion does the lens have?
The lens has a distortion of only 3.13%.

Is the lens weatherproof?
Yes, the lens has a weatherproof construction with three rubber seals that protect against dust and moisture.