Cashback offer on the Irix 11mm F4 Blackstone Lens

Irix has announced a promotion for the Irix 11mm F4 Blackstone lens. There is a cashback of $100. As a reminder, the price for this lens is $649 on Bhphotovideo.com and Adorama.com online stores.

The Irix 11mm F4 Blackstone Lens is wide-angle prime lens for full-frame DSLRs. The lens has a rugged design and is available in versions for Canon EF, Nikon F, and Pentax K.

The 126 ° FOV lens is unique as it has only 3.13% curvilinear distortion on a full-frame sensor. In the optical design of the lens, 16 elements are used, located in 10 groups, and a nine-blade diaphragm.

The Blackstone lens is made from an aluminum-magnesium alloy with an engraved fluorescent mark that is easy to read in the dark and has an anti-scratch coating. Electrical contacts allow users to control the aperture values ​​that are passed to EXIF.

Irix 11mm F4 Blackstone Specifications

• Focal Length: 11mm
• Maximum Aperture: f/4
• Minimum Aperture: f/22
• Lens Mount: Nikon F, Canon EF, Pentax K
• Format Compatibility: Full-Frame
• Angle of View: 126°
• Minimum Focus Distance: 27.5 cm
• Optical Design: 16 Elements in 10 Groups
• Diaphragm Blades: 9, Rounded
• Focus Type: Manual Focus
• Image Stabilization: No
• Rear Filter: Gel Filter
• Dimensions: 118 x 103 mm
• Weight: 1.74 lb / 790 g

Earlier this year, Irix has introduced the IRIX 45mm f1.4 Dragonfly wide angle lens, which is designed for the Fujifilm GFX system, sensor size is 43.8 x 32.9 mm, and is priced at $795.