# Lens Irix Blackstone Black 16 elements 10 groups 0.275m Pentax K

**URL:** https://aio.lv/en/product--irix-7640172190319--10531527
**Data updated:** 2025-12-30 08:47 (EET)
**Category:** Camera Lenses
**Manufacturer:** Irix
**Manufacturer code:** 7640172190319
**EAN:** 7640172190319
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 460.99 €
**Prices and availability valid until:** 2026-08-05 23:59
**Price without VAT (21%):** 380.98 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--irix-7640172190319--10531527

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 28.07.2026 | free |
| Pickup points | 31.07.2026 | 1.89 EUR |
| Courier delivery to door | 31.07.2026 | 4.99 EUR |

## Summary description

The Irix Blackstone Black lens features a structure of 16 elements in 10 groups, a closest focusing distance of 0.275m, and is compatible with Pentax K mount cameras. Made from durable aluminium and magnesium, it has a length of 118mm and comes in black. Ideal for photographers seeking high-quality optics.

## Long description

The Irix Blackstone 11mm f/4.0 is an ultra-wide Full Frame rectilinear lens offering a 126° angle of view and a lens construction of 16 elements in 10 groups. Designed for Pentax K mount cameras, it provides a closest focusing distance of 0.275 m and a robust aluminium-magnesium body in black. This lens combines very low distortion (around 3.13%) with a lightweight build and engraved fluorescent markings for easy operation in varied lighting conditions.
Advantages
The lens delivers minimal distortion through the use of 4 high refractive elements, 2 ED elements and 3 aspherical elements, while maintaining a compact, lightweight construction that does not compromise optical performance. Weather-sealed construction and durable materials ensure reliable protection against dust, moisture and accidental splashes. An ergonomic, rubber-coated focus ring with anti-slip surface improves handling for on-the-go photography.
Suitable for
Landscape and architecture photography requiring minimal perspective distortion
Travel and hiking where low weight and compact size are important
Interior and real-estate photography in tight spaces
Astrophotography and nightscapes where a very wide field of view is needed
Key specifications
Focal length: 11 mm (ultra-wide)
Maximum aperture: f/4
Minimum aperture: f/22
Optical construction: 16 elements in 10 groups
Closest focusing distance: 0.275 m
Angle of view: 126° (Full Frame)
Mount: Pentax K
Body material: aluminium and magnesium
Colour: Black
How to use
Attach the lens to a Pentax K mount camera following the camera manufacturer’s instructions. Use the engraved fluorescent markings to set focus and align settings in low light. For landscapes and architecture, set a smaller aperture (higher f-number) to increase depth of field; for night or low-light scenes, use the maximum aperture of f/4 and adjust ISO and shutter speed accordingly. The ergonomic rubber-coated focus ring allows manual focusing when required.
Usage recommendations
To preserve optical performance and weather sealing, keep front and rear elements clean and avoid prolonged exposure to heavy rain. Use a lens hood or protective filter to reduce stray light and protect the front element when shooting in challenging conditions.

## Specifications

### Lens system

| Feature | Value |
|---|---|
| Focus adjustment | Manual |
| Lens structure (elements/groups) | 16/10 |
| Closest focusing distance | 0.275 m |
| Minimum aperture number | 4 |
| Number of diaphragm blades | 9 |
| Maximum aperture number | 22 |
| Reproduction ratio | 1:13 |
| Fixed focal length | 11 mm |
| Lens mount interface | Pentax K |
| Lens viewing angle, diagonal | 126 |

### Weight & dimensions

| Feature | Value |
|---|---|
| Length | 118 mm |

### Performance

| Feature | Value |
|---|---|
| Camera brands compatibility | Pentax |

### Design

| Feature | Value |
|---|---|
| Material | Aluminium, Magnesium |
| Product colour | Black |

## FAQ

### How much does the Lens Irix Blackstone Black cost, and is it available for purchase?

The price is 460.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 29 pcs. are in stock, and you can place your purchase right now with delivery across Latvia and Europe or choose pickup at the Riga collection point. We offer favorable purchase terms, including the option to split the payment into convenient monthly installments. Availability and price are updated in real time, so we recommend placing your order in advance.

### If I order this product today, when will I receive my order?

If you place your order today, delivery will be as fast and convenient as possible. You will be able to pick up your order on 28.07.2026 at the Riga pickup point or choose delivery across Latvia and Europe. We carefully inspect every purchase and pack it securely for safe transportation.

### What payment options are available?

AiO.lv offers several payment methods: Bank transfer, Bank cards on-line, Apple Pay, Google Pay, Installment. All transactions are 100% secure and encrypted.

### Can Lens Irix Blackstone Black be purchased with a lease?

Yes, the purchase is available both on credit and with an interest-free installment plan. Learn more about installments and credit options: https://aio.lv/en/payment#b3

### Can this product be purchased for a company (with VAT)?

Yes. AiO.lv works with legal entities in Latvia and across Europe. The product price already includes VAT. For certain product categories, as well as for companies from other EU countries with a valid VAT number, a 0% VAT rate may apply. We issue the invoice immediately after the order is placed, support electronic BIS invoices, and automatically generate all necessary accounting documents. You can complete the purchase for a company online — simply select the company profile and choose bank transfer as the payment method during checkout.

### What is the warranty period?

All Irix products come with an official 2 Years warranty. It covers all manufacturing defects and malfunctions that may occur during use. The warranty is valid at all authorized Irix service centers and through AiO.lv

### Can the product be returned after purchase?

Yes, you can return the product within 14 days of purchase if you bought it as a consumer (not a legal entity). Returns are possible without giving any reason — the main condition is that the product retains its original appearance and full set of accessories. We will make the process as simple and convenient as possible: just contact our customer support team, and we will help you arrange the return.

### Where should I contact for warranty service?

For warranty-related questions you can contact the AiO.lv (SIA VSPRO) customer support team. More information about warranty service: https://aio.lv/en/warranty

### How can I tell if this product suits my needs?

When making a choice, we recommend paying attention to the key features: minimum aperture number, closest focusing distance, maximum aperture number, lens structure (elements/groups), lens mount interface, product colour, compatibility with your devices or usage conditions, material quality, functionality, and warranty terms. These characteristics will help you determine how well the model meets your needs.

## Image

https://aio.lv/img/cache/product/10531527/64400394_large.webp