Description
15mm f/2.4 Firefly
Optimal precision, minimal distortion
IRIX expand your vision
A lightweight option with no optical compromises
Our Firefly lens offers the same optical performance and high quality mechanism as our Blackstone, but its ultra lightweight construction makes it the perfect choice for hikers, travellers, or anyone who simply likes to pack light.
The ergonomic, anti-slip, rubber coated focus ring makes for a practical, user-friendly lens. This lightweight option is ideal for on the go photography, without any compromise on optical quality.
IRIX beauty in every detail
| Lens Version | Firefly | Blackstone | |
|---|---|---|---|
| HOUSING MATERIAL | Lightweight material, 12% weight saving | aluminium-magnesium alloy, premium finish | |
| HOUSING OUTER FINISH | standard | anti-scratch | |
| FOCUS RING MATERIAL | anti slip coating | all-metal anodized ring with grooved surface | |
| MARKINGS | printed | engraved | |
| MARKINGS PAINT | standard | UV light reactive paint | |
| WEATHER SEALING |
FRONT LENS ELEMENT | no | yes |
| FOCUS LOCK RING | yes | ||
| FOCUS RING | yes | ||
| CAMERA MOUNT | yes | ||
| PROTECTIVE CASE INCLUDED | soft lens pouch | hard lens case | |
IRIX
Extreme weather resistance
Irix lenses are made with phenomenal precision. Each Irix lens is equipped with a weather sealed construction which protects the interior against dust and moisture. Thanks to inner seals, our lenses are also protected from accidental water splashes.
Intelligent filter options
We offer you excellent wide-angle lenses with front and rear filter options. Our lenses feature an ingenious way to easily access a rotatable filter through use of a window on the petal-shaped lens hood. Next to this, we have also included a rear filter slot for gelatin filters, offering you even more opportunity for filter use.
IRIX personalize your view
OPTICAL SCHEME
MTF
DISTORTION
SPECIFICATIONS
| IMAGE SIZE | 35mm „Full Frame” | ||
| FOCAL LENGTH | 15 mm | ||
| FIELD OF VIEW | 110⁰ (diagonal) | ||
| FOCUS RANGE | 0.25 m (0.82 ft) – ∞ | ||
| REPRODUCTION RATIO | 1:9 | ||
| FOCUS TYPE | manual with lock function | ||
| APERTURE RANGE | f/2.4 – f/22 | ||
| APERTURE CONTROL | via camera | ||
| APERTURE SHAPE | 9 rounded blades | ||
| LENS CONSTRUCTION | 15 elements in 11 groups 3x HR, 2x ED, 2x ASP | ||
| FRONT FILTER THREAD | 95 x 1.0 mm | ||
| REAR GELATIN FILTER SLOT | 30 x 30 mm | ||
| AVAILABLE MOUNTS | Canon EF, Nikon F, Pentax K | ||
| DIMENSIONS (DXH) | 114 x 100 mm (4.49” x 3.94”) | ||
| WEIGHT | FIREFLY | CANON | 608 g (1.34 lbs) |
| NIKON | 581 g (1.28 lbs) | ||
| BLACKSTONE | CANON | 685 g (1.51 lbs) | |
| NIKON | 653 g (1.44 lbs) | ||
