


By: Irix Web Page


Gel Filter: (Rear)

By: Irix Web Page

Photo By: Miguel Mesquita

Every landscape photographer uses filters with a ring adpater you can use your own filters, or you can use the Irix IFH-100 holder, this is a holder design for this lens that can hold the 100x100 and 100x150 filters, that alows you to expand your camera’s capabilities thanks to Gradual Neutral Density filters with different gradients.

Photo By: Miguel Mesquita

By: Irix Web Page
It doesn’t matter if you’re traversing the hot sands of the Sahara or the frigid expanse of Antarctica – Irix lenses never back down from any challenge.
The sealing system has been designed to protect the inside of the lens from moisture, dust, and sand. Equally important, the lens does not change its dimensions during focus pulling, eliminating the risk of dirt particles getting swept into the internal structure. These properties not only allow you to work in demanding conditions, but also guarantee the cleanliness of the camera’s mirror chamber sensor.

By: Irix Web Page

This lens provides a full DOF (Depth of Field) scale including engraved aperture marks covering f/8 through f/16, can be also used the provided hyperfocal setting marks.

Photo By: Miguel Mesquita

NIKON D810 IRIX 15MM F/2.4 - Photos Without Lens Corretion - Photo By: Miguel Mesquita

NIKON D810 IRIX 15MM F/2.4 - Photos Without Lens Corretion - Photo By: Miguel Mesquita


Nikon D810 + Irix 15mm F/2.4 - Iso64, F/11, 1/6 Sec - Photo By: Miguel Mesquita

Photo By: Miguel Mesquita

Photo By: Miguel Mesquita

I'm quite satisfied with the images directly outside the camera, but when you apply the lens profile to correct the image in post production, then the vignette practically disappears.

In every shoots i tooked i almost didn't saw any cromatic aberration.
Even at the maximum relative aperture it would be difficult to notice any traces of colouring in out-of-focus areas.
Good work...

Nikon D810 + Irix 15mm F/2.4 - Iso64, F/8, 1/10 Sec - Croped - Photo By: Miguel Mesquita

Nikon D810 + Irix 15mm F/2.4 - Iso64, F/8, 1/10 Sec - Croped - Photo By: Miguel Mesquita

Nikon D810 - ISO 500, F9, 1/5 SEC - Photo By: Miguel Mesquita

Nikon D810 - ISO 500, F9, 1/5 SEC - Photo By: Miguel Mesquita
The amount of comatic distortion is fairly low. There’s a bit of a bulge in star points on the edge of the frame, but they don’t start to “grow wings”, and I felt the look was fairly non-offensive.

Nikon D810 - ISO 500, F2/4, 15 SEC - Photo By: Miguel Mesquita

Nikon D810 - ISO 500, F2/4, 15 SEC - Photo By: Miguel Mesquita

Nikon D810 - ISO 64, F2.4, 1/5 SEC - Photo By: Miguel Mesquita
Another great feature, the 9 aperture blades diaphragm makes magic, your sunstar will appear with a 18 brilliant points of light at the smaller apertures.
Magnificent, another good work.

Nikon D810 + Irix 15mm F/20 - Iso64, F/16, 1/8 Sec - Photo By: Miguel Mesquita

Nikon D810 + Irix 15mm F/20 - Iso64, F/16, 1/8 Sec - Photo By: Miguel Mesquita

Nikon D810 + Irix 15mm F/20 - Iso64, F/20, 10Sec - Photo By: Miguel Mesquita
I’m very impressed with the Irix 15mm f/2.4lens. For the first lens created of the brand feel like Irix has done a great job.
Other good feature of this lens is the price, this lens cam be found in the Irix webstore at 695€ the blackstone model, and 475€ at firefly model.

Photo By: Miguel Mesquita
I was extremely convinced with the lens, it is not a perfect lens, but when we talk about ultra wide lens, the perfection is almost impossible.
If you’re looking for an ultra-wide angle rectilinear prime for landscapes, architectural and travel photography, the Irix 15mm f/2.4 Blackstone is an excellent value.
I would especially like to see the wide open corner image quality improved. But for the price, its value is easy to recognize the quality of this lens.
Getting a weather-sealed aluminum-magnesium lens barrel with decent image quality, with a gorgeous sunstar flare, with a Non existent cromatic aberration for a relatively low price puts this lens squarely on the consideration list.
If you're a landscape photographer, particularly if you shoot a lot of night skies or in low light conditions, then this would be a great lens for you. I'm telling you, the lock focus ring makes night shoots so incredibly smooth.

- Superb sharpness and contrast especially centrally;
WHAT I DIDN'T LIKED
- Little bit of Coma in corners at F/2.8

Photo By: Miguel Mesquita

Photo By: Miguel Mesquita

Photo By: Miguel Mesquita

Photo By: Miguel Mesquita
