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Irix Firefly 15mm — Review & Specs | Pricepect | Pricepect

Home Camera LensesIrix Firefly 15mm

Irix Firefly 15mm — image 1

Irix

Irix Firefly 15mm

Expert Review Analysis

The Irix 15mm f/2.4 Firefly is a manual‑focus ultra‑wide prime lens for full‑frame DSLRs, offering a fast f/2.4 aperture, 110° diagonal view and robust weather sealing. It combines lightweight composite construction with a focus‑lock mechanism, making it attractive for landscape, architecture and astrophotography.

✓ Best for: Landscape, astrophotography, architecture and interior photographers who prefer manual control, need a fast f/2.4 aperture, and benefit from weather sealing and a focus‑lock for zone‑focusing.✗ Not ideal for: Fast‑action, wildlife or video shooters who require autofocus and image stabilization, as well as users who cannot accommodate the lens’s size on compact camera bodies.

Pros

✓Sharpness and resolution remain excellent even at the wide-open f/2.4 aperture, delivering high detail across the frame.
✓Very low distortion of only about 2% and minimal chromatic aberration, making it ideal for architectural photography.
✓

Best Seller Rank History

Now#2,196Best#860Worst#2,196 -1,336

Lower = better sales rank

Rating Trend

Rating4.2/ 5Reviews147 +0.11

Specifications

Accessories

Included AccessoriesSoft pouch

Camera

Focal Length15 mm mm

Aperture Rangef/2.4 - f/22

Field of View110° degrees

Minimum Focus Distance250 mm mm

Diaphragm Blades9 rounded

Controls

Focusing TypeManual with focus lock

Focus LockYes

Focus Ring Throw140° degrees

Design

Weight599 g g

Height100 mm mm

Width140 mm mm

Length100 mm mm

Diameter114 mm mm

Features

Image StabilizationNo

Aperture RingNo

CoatingNano/Neutrino

Built-in AE ChipYes

Rear Gel Filter SlotYes

General

BrandIrix

ModelIL-15FF-EF

MountCanon EF

Sensor CompatibilityFull-frame and APS-C

Warranty2 years

Coating

Nano/Neutrino coatingProvides flare resistance, contrast enhancement, and aberration control

Build

Weather sealingSealed in four key areas for dust and moisture protection

Focus

Focus ring throw140° manual focus ring travel

Filter

Rear gel filter slotAllows insertion of ND gels for long exposures

Stabilization

Image stabilizationNone (no IS or OSS built in)

Dimensions & Weight

Height3.94 inches

Width5.51 inches

Depth3.94 inches

Weight1.32 Pounds

Research Sources

photographylife.com

photographyblog.com

bhphotovideo.com

dustinabbott.net

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User Reviews

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4.1

(147 reviews)

$329.00

IL-15FF-EFBlackFirefly - Canon mount 2-Year Warranty

Fast f/2.4 maximum aperture provides strong low‑light performance and shallow depth of field for creative bokeh.

✓Robust weather sealing in four key areas protects the lens against dust and moisture during outdoor shooting.

✓Innovative focus lock mechanism and 140° focus ring throw enable precise zone‑focusing for landscapes and astrophotography.

✓Rear gel filter slot allows easy use of ND gels for long‑exposure work without adding bulk.

✓Lightweight composite construction (≈546 g) makes handheld ultra‑wide shooting more comfortable than many metal rivals.

Cons

✗Manual‑focus only design can be challenging for fast‑moving subjects or video work where quick focus changes are needed.
✗Lens size (114 mm × 100 mm) and weight (~550 g) are relatively bulky for an ultra‑wide prime, especially on smaller mirrorless bodies.
✗Occasional purple‑green fringing appears on high‑contrast edges, particularly when shooting wide open.
✗No built‑in image stabilization or autofocus, limiting usability in handheld low‑light situations without a tripod.
✗Corner softness can be noticeable at the maximum aperture, requiring stopping down for optimal sharpness.

From Expert Reviews

Praised by Experts

✓Professional reviewers highlight the lens’s exceptional sharpness and resolution from f/2.4 across the frame.
✓Very low chromatic aberrations and only about 2% distortion are praised as outstanding for an ultra‑wide prime.
✓The robust weather‑sealed metal mount and nano‑coating are noted as pro‑grade build quality for demanding outdoor work.
✓The focus‑lock mechanism with an infinity detent is described as extremely useful for landscape and astrophotography.
✓Smooth, rounded 9‑blade diaphragm delivers pleasing bokeh and natural colour rendition, according to editors.

Criticized by Experts

✗Professional reviewers point out that the lack of autofocus and image stabilization limits its versatility for fast action or video.
✗The relatively large dimensions and weight for an ultra‑wide lens are noted as a drawback on smaller camera bodies.
✗Some reviewers mention occasional corner softness when shooting wide open, requiring stopping down for peak performance.
✗Manual focus can be difficult to achieve precise focus in low‑light situations, according to expert testing.

From User Reviews

Users Love

✓Everyday users frequently commend the lens’s sharp center resolution and low distortion, making it great for architecture.
✓The close minimum focusing distance of 0.25 m enables creative perspective shots that users find valuable.
✓Manual ultra‑wide design is appreciated for its affordability and lightweight feel compared to heavier alternatives.
✓Weather sealing and solid build are praised by users who shoot outdoors in challenging conditions.
✓Rear gel filter slot is liked for easy long‑exposure photography without extra accessories.

Users Complain About

✗Users report that manual focus can be frustrating in dim lighting or when recording video, due to lack of focus assistance.
✗The lens’s bulk and weight are considered cumbersome on smaller camera bodies, affecting balance and handling.
✗Occasional corner softness at f/2.4 is noted by users, who often need to stop down for sharper edges.
✗Some users experience occasional purple or green fringing on high‑contrast subjects, especially wide open.

Expert Opinion

Professional reviewers commend the Irix 15mm f/2.4 Firefly for its exceptional sharpness, ultra‑low distortion, and fast aperture, noting the nano‑coating and weather sealing as pro‑grade features. The focus‑lock mechanism and 140° focus ring throw are highlighted as particularly useful for landscape and astrophotography, while the lack of autofocus, image stabilization, and occasional corner softness are cited as drawbacks.

What Users Say

Everyday users appreciate the lens’s sharp center performance, low distortion and the ability to focus close for creative perspectives, praising its value and weather‑sealed build. Common complaints revolve around the manual‑focus workflow in low light or video, the bulkiness on smaller bodies, and occasional fringing or corner softness when shooting wide open.

Common Complaints

Manual focus difficulty in dim light or video, occasional corner softness at maximum aperture, purple/green fringing on high‑contrast edges, and the lens’s relatively large size and weight.

How It Compares

vs. Samyang/Rokinon 14mm f/2.8

Advantages

✓Irix provides a faster f/2.4 aperture versus f/2.8, giving better low‑light performance.
✓Only about 2% distortion compared with 4‑5% on the Samyang, yielding cleaner architectural shots.
✓Focus‑lock mechanism and rear gel filter slot are not available on the Samyang.

Disadvantages

✗Both lenses are manual focus only, so Irix does not gain an advantage in autofocus.
✗Samyang is slightly smaller in focal length, which some users may prefer for tighter framing.

Choose Irix for faster aperture and focus‑lock features; choose Samyang if you prefer a marginally shorter focal length and potentially lower price.

vs. Laowa 15mm f/2 (shift lens)

Advantages

✓Irix is lighter with a composite body (≈546 g) versus the heavier metal Laowa.
✓Lower distortion (2% vs. higher on the Laowa) and a focus‑lock mechanism give Irix an edge for pure ultra‑wide shooting.

Disadvantages

✗Laowa offers a shift function for perspective control, which the Irix lacks.
✗Laowa’s f/2 aperture is marginally faster, though the difference is small.

Select Irix for general ultra‑wide work and portability; select Laowa when shift capability is required for architectural corrections.

vs. Canon EF 14mm f/2.8L

Advantages

✓Irix is lighter and more affordable while still delivering low distortion and a fast aperture.
✓Unique focus‑lock and rear gel filter slot provide creative options not found on the Canon.

Disadvantages

✗Canon provides reliable autofocus and the premium L‑series build quality.
✗Canon’s weather sealing and optical performance are industry‑standard for professionals.

Opt for Irix if you need a manual ultra‑wide lens with budget‑friendly pricing and focus‑lock; opt for Canon if autofocus and L‑series durability are essential.