IRIX Blackstone 15mm f/2.4

★★★★☆ 4.2 (93)

The 15mm f/2.4 prime combines a 15-element optical design with Neutrino Coating to deliver low-distortion ultra-wide shots. Its manual focus with focus lock and weather-sealed build provide reliable tactile control in harsh conditions. This lens suits macro shooters who exploit the 250mm close focus to capture wide perspectives with sharp detail.

Focal length 15mm
Aperture f/22
Mount Pentax K
Weather Sealed
Weight 685 g
af type manual focus only
lens type prime
IRIX Blackstone 15mm f/2.4 lens
46 Punteggio Complessivo
Disponibile anche in:

Panoramica

Cosa dicono i proprietari

Come è cambiata l'opinione dei proprietari nel tempo

Esclusiva

In base a quando i clienti hanno effettivamente scritto le recensioni, per vedere se gli elogi iniziali sono durati.

L'opinione dei proprietari è rimasta stabile nel tempo
81/100La nostra analisi del sentiment con IAaffidabilità media · 15 fonti · mag 2026
1★2★3★4★5★Q2 '17: 5.0★ · 5 recensioniQ3 '17: 4.5★ · 6 recensioniQ4 '17: 4.5★ · 6 recensioniQ1 '18: 4.8★ · 6 recensioniQ2 '18: 5.0★ · 5 recensioniQ4 '18: 4.3★ · 6 recensioniQ1 '19: 5.0★ · 3 recensioniQ2 '19: 3.8★ · 4 recensioniQ2 '20: 5.0★ · 1 recensioneQ3 '20: 5.0★ · 1 recensioneQ4 '20: 5.0★ · 2 recensioniQ2 '21: 4.5★ · 2 recensioniQ3 '21: 5.0★ · 2 recensioniQ4 '21: 5.0★ · 1 recensioneQ2 '22: 5.0★ · 2 recensioniQ1 '23: 5.0★ · 1 recensione56665634112221121111111121212Q2 '17Q1 '18Q1 '19Q3 '20Q3 '21Q2 '22Q1 '23Q2 '24Q1 '25Q1 '26Q2 '26
Valutazione mediaSoddisfatti (4-5★)Insoddisfatti (1-2★)Altezza della barra = numero di recensioniData stimata
  1. Q2 201963/1003.8★4 recensioni

    Buyers praised value and astrophotography performance, but one reported severe decentering and quality control concerns.

    • Excellent value for landscape and astrophotography, with minimal distortion.
    • Severe decentering defect causing softness on one side of the frame.
    • Manual focus ring stiffness noted; infinity mark accuracy varies.
    • Firefly version recommended over Blackstone for cost savings.
  2. Q1 201993/1005.0★3 recensioni

    Buyers praised the lens for sharpness, build quality, and minimal distortion, though one noted a coma issue for astrophotography.

    • Sharpness and image quality are excellent.
    • Build quality and attention to detail are praised.
    • Minimal distortion and easy correction in Lightroom.
    • Coma issue for astrophotography; stars appear as comas.
  3. Q4 201873/1004.4★6 recensioni

    Buyers praised the lens for sharpness, build quality, and value, but noted focus calibration issues and slow customer service.

    • Excellent image quality and sharpness, comparable to L glass.
    • Focus scale and confirmation chip can be off, requiring patience.
    • Solid build quality with thoughtful features for astrophotography.
    • Customer service slow to respond to focus-related complaints.
  4. Q2 2018100/1005.0★5 recensioni

    Buyers praised the lens for sharpness, build quality, and astrophotography performance. Minor issues with lens shade fit were resolved by responsive support.

    • Excellent image sharpness and color, especially from f/4 onward.
    • Great for astrophotography, with accurate infinity focus out of the box.
    • Solid build quality, described as 'built like a tank'.
    • Lens shade attachment issue reported but quickly resolved by support.
  5. Q1 201890/1004.8★6 recensioni

    Buyers praised the lens for sharpness, build quality, and value, especially for landscape and astrophotography. Some noted minor quality control and underexposure issues.

    • Sharp image quality and excellent performance for the price.
    • Good build quality, smooth focus, and sturdy construction.
    • Quality control issues: some lenses sharper on one side than the other.
    • Photos tend to be slightly underexposed, requiring exposure compensation.
  6. Q4 201778/1004.5★6 recensioni

    Buyers praised sharpness, build quality, and value for astro/landscape, but some reported poor quality control and infinity focus calibration issues.

    • Sharp image quality with minimal distortion, excellent for astro and landscape.
    • Infinity focus calibration issues out of box; some lenses missing lock screws.
    • Solid Blackstone build with weather sealing and included hard case.
    • Gel filter system innovative but tricky to use in field.
  7. Q3 201783/1004.5★6 recensioni

    Buyers praise sharpness, build quality, and value for astrophotography and landscapes, but note manual focus is impractical for general use.

    • Sharpness and image quality are excellent, even wide open.
    • Build quality is solid and lens is lightweight for its class.
    • Manual focus-only design is impractical given autofocus alternatives.
    • Packaging damage reported; lens performance unaffected.
  8. Q2 2017100/1005.0★5 recensioni

    Buyers praised excellent image quality, rectilinear distortion, and thoughtful ergonomic design for landscapes and astrophotography. Some noted manual focus challenges in dim light.

    • Excellent image quality and sharpness for landscapes and astrophotography.
    • Well-thought-out ergonomic features like filter accommodation and focus lock.
    • Minimal distortion and great value compared to pricier alternatives.
    • Manual focus can be difficult in low light, but overall manageable.

Basato su 69 recensioni dei clienti datate, raggruppate per trimestre solare. L'analisi per periodo è in inglese.

Le prove

Prestazioni

Percentili di prestazione

AF 13.9
Bokeh 25.9
Build 56.9
Macro 74.4
Optical 84.1
Aperture 22.6
User Sentiment 37.3
Versatility 33.6
Riscontro degli utenti 65.4
Stabilization 37.9

Scheda tecnica

Specifiche tecniche complete

Optics

Type Prime
Focal Length Min 15
Focal Length Max 15
Elements 15
Groups 11
Aspherical Elements 2
ED Elements 2
Coating Neutrino coating

Aperture

Max Aperture f/22
Min Aperture f/2.4
Constant No
Diaphragm Blades 9

Build

Mount Pentax K
Format full-frame
Weather Sealed Yes
Weight 0.7 kg / 1.5 lbs
Filter Thread 95

AF & Stabilization

AF Type manual focus only
Stabilization No

Focus

Min Focus Distance 280
Max Magnification 1:2

Rispetto alla concorrenza

Spec IRIX Blackstone 15mm f/2.4 Nikon NIKKOR Z DX 18-140mm f/3.5-6.3 VR Tamron Di III 28-75mm f/2.8 VXD G2 Sigma Contemporary 10-18mm f/2.8 DC DN Panasonic Leica DG Vario-Elmarit H-ES12060 Canon RF 28-70mm f/2.8 IS STM
Focal Length 15mm 18-140mm 28-75mm 10-18mm 12-60mm 28-70mm
Max Aperture f/22 f/3.5 f/2.8 f/2.8 f/2.8 f/22
Mount Pentax K Nikon Z Sony E Sony E Micro Four Thirds Canon RF
Stabilization false true false false true true
Weather Sealed true true true true true true
Weight (g) 685 315 540 260 320 495
AF Type manual focus only stepping motor VXD Autofocus linear motor STM
Lens Type prime zoom zoom zoom zoom zoom
Compare Compare Compare Compare Compare
Prodotto AFBokehBuildMacroOpticalApertureUser SentimentVersatilityRiscontro degli utentiStabilization
IRIX Blackstone 15mm f/2.4 13.925.956.974.484.122.637.333.665.437.9
Nikon NIKKOR Z DX 18-140mm f/3.5-6.3 VR Compare 86.977.783.882.688.579.7096.232.296.6
Tamron Di III 28-75mm f/2.8 VXD G2 Compare 54.68867.287.387.885.680.478.283.337.9
Sigma Contemporary 10-18mm f/2.8 DC DN Compare 54.683.487.193.381.585.680.46969.237.9
Panasonic Leica DG Vario-Elmarit H-ES12060 Compare 98888350.290.285.644.293.163.983.2
Canon RF 28-70mm f/2.8 IS STM Compare 86.925.970.280.38522.698.177.18898.5

Punteggi per utilizzo

Macro (61.6)Complessivo (46.2)Budget (41.8)Street (37.2)Travel (39.5)Portrait (37)Landscape (49.8)Professional (43.9)Video Cinema (32.3)Wildlife Sports (33.7)

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