The IRIX 30mm f/1.4 Lens for Pentax Kfrom IRIX 30mm f/1.4 Lens for Pentax Kfeatures an optical design based on the IRIX 30mm Cine model, intended for the highly demanding film industry market. The entire optical structure of the lens is identical in both the still and cine versions, designed to emphasize the vividness of the image. This lens features a modern optical design that includes three ultra-low dispersion glass elements, two high reflectance glass elements and one aspherical element. There is a total of 13 elements in 11 groups to provide sharp details, vivid colors, and ultra-low distortion. In addition, the 11-blade design aperture with rounded edges ensures a pleasant and vivid background bokeh. The elements feature Neutrino multicoating for optimal light transmission without lens flare.

The premium construction materials ensure operation in extreme environmental conditions, and a system of seals located in key places of the lens resist moisture and dust, protecting the cleanliness of the mirror chamber and the sensor of the camera. The manual focus design incorporates rear focusing so that the lens does not change dimensions while focusing. A special focusing ring with a characteristic shape is hallmark of IRIX design, and special texturing and properly selected rubber material and the dedicated emboss makes it easy to feel the ring's position. The Focus Lock function allows the focusing ring to be locked in a specific position, especially useful when keeping a specific camera-to-subject distance while zone-focusing, or when keeping perfect focus at infinity in landscape photography or astrophotography.

The IRIX 30mm f/1.4 lens can be controlled directly from the camera, making semi-automatic modes (PASM) and data recording in Exif format available. The use of electronics also enables the lens to be equipped with a focus confirmation system in enabled camera bodies. The camera will report the correct focus setting, either in the form of an icon in the viewfinder or as a sound, when the focus is correctly set.

Pentax K-Mount Lens / Full-Frame Format    Aperture Range: f/1.4 to f/16    Neutrino Lens Coating    Manual Focus with Focus Lock    Weather Sealed; Rubber Mount Seal    Minimum Focus Distance: 13.38"    Rounded 11-Blade Diaphragm    3 ULD, 2 HR, 1 Aspherical Glass Elements    13 Elements in 11 Groups

• Fast f/1.4 aperture
• Aperture control from the camera
• 61.9° field of view
• Manual focus design
• Focus lock function
• 140° focus ring rotation
• 86mm filter mounting front thread
• Reinforced internal structure based on metal elements
• Scratch-resistant lens finish
• Anti-slip focusing ring with special finish for easy operation
• Engraved markings filled with UV-reactive paint
• Sealed to protect against dust and water

Related Questions and Answers

Q: 1. Will the Sigma 30mm f/1.4 DC HSM Art Lens for Canon work with my Canon Rebel T3i?

A: Yes

Q: 2. Will this work with an eos t6i?

A: Thank you for your interest in Sigma products. The 30mm f/1.4 DC HSM Art Lens for Canon is compatible with the Canon T6i.

Q: 3. Is this the 30mm f/1.4 DC HSM A model?

A: The Sigma 30mm f/1.4 DC HSM Lens for Canon DSLR Cameras is part of the Sigma Art Series of lenses.

Q: 4. Does this lens has an internal focusing mechanism? In other words, does this lens maintain fixed external dimensions while focusing?

A: Yes

Q: 5. I have sort of a general question. I'm a strictly natural light photographer. A fellow photographer friend said she would be worried that this wouldn't let in as much light as, say the 35mm Art, simply because the area of the front glass is not as large. I had never even thought of this consideration. Thoughts?

A: I have found that this lens works awesome in natural light. Outdoor face type portraits come out amazing.

Q: 6. will this lens work for the nikon d3200 camera?

A: Thank you for your interest in Sigma products. The 30mm f/1.4 DC HSM Art Lens for Nikon is compatible with the Nikon D3200.

Q: 7. Does this lens need electronic communication with the camera to change F stop? Can I use this lens on an adapter without electronic contacts? The adapter has a Nikon F stop dial.

A: Yes. When using the IRIX 30mm f/1.4 Dragonfly Lens for Nikon F, there is no way to control the aperture ring manually and with manual adapters. The aperture of this lens is designed to be controlled electronically, so a manual adapter with an aperture dial would not work. To control the lens' aperture, you would need a lens adapter that allows you to electronically set the aperture on your camera.

Q: 8. Does this lens works with Black Magic Cinema 6k Pro? Does the F Stop works through the camera?

A: Yes, the IRIX 45mm f/1.4 Lens for Canon EF is compatible with the Blackmagic Design Pocket Cinema Camera 6k Pro and you will control the aperture through the camera.

Q: 9. Will this lens work with Sony A7 series cameras?

A: Unfortunately no, the Sigma 30mm f/1.4 DC HSM Art Lens for Sony is made for use with A-Mount Sony SLR cameras. It will not be compatible with E-Mount Mirrorless A7 series.

Q: 10. Will this lens be compatible with a Canon T7i Camera?

A: Yes, the Sigma 30mm f/1.4 DC HSM Art Lens for Canon EF is compatible with the Canon T7i.