Irix 11mm f/4.0 Blackstone Pentax

Irix 11mm f/4.0 Blackstone Pentax – Extremely wide-angle lens with weather protection

Irix 11mm f/4.0 Blackstone is an impressive wide-angle lens designed for DSLR cameras, making it ideal for both professional and hobby filmmakers. With a field of view of 126 degrees, this lens offers a unique opportunity to capture stunning landscapes and architecture with minimal distortion. This lens is perfect for those seeking high-quality optics and durable construction in extreme environments.

Features and Benefits

This lens is equipped with four high-refractive lenses, two ED lenses, and three aspherical lenses, contributing to a distortion as low as 3.13%. This makes the Irix 11mm f/4.0 Blackstone unique in its class and perfect for photography where image quality is crucial. The weather-sealed construction ensures that the lens withstands both dust and moisture, making it an ideal companion for outdoor photography in varying weather conditions.

The Blackstone version is made of a durable aluminum-magnesium alloy that provides robust protection, even under extreme conditions. With rubber seals, the camera mount and focusing mechanism are also protected from dust and moisture, as well as accidental water splashes.

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: 790g - 820g

This lens is also equipped with a metal focusing ring with a ribbed surface for better grip and control during use. Additionally, the rear filter holder allows for the use of gel filters, providing further creative freedom. The engraved fluorescent markings make it easy to read and use the lens even in low light.

Frequently asked questions

Does the Irix 11mm f/4.0 Blackstone have weather protection?
Yes, the lens has a weather-sealed construction that resists dust and moisture.

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

What is the angle of view for this lens?
The angle of view is 126 degrees (diagonal).

What material is the Blackstone version made of?
The Blackstone version is made of a durable aluminum-magnesium alloy.