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 12.8
Bokeh 24.1
Build 60.1
Macro 74.6
Optical 85.4
Aperture 21
User Sentiment 37.3
Versatility 33.3
Riscontro degli utenti 68.9
Stabilization 37.8

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 Tamron Di III 17-70mm f/2.8 Di III-A VC RXD Nikon NIKKOR Z 17-28mm f/2.8 Sigma Contemporary 16-28mm f/2.8 DG DN Panasonic Leica DG Vario-Elmarit H-ES12060 Sony G SELP28135G.SYX
Focal Length 15mm 17-70mm 17-28mm 16-28mm 12-60mm 28-135mm
Max Aperture f/22 f/2.8 f/2.8 f/2.8 f/2.8 f/4
Mount Pentax K Fujifilm X Nikon Z Sony E Micro Four Thirds Sony E
Stabilization false true false false true true
Weather Sealed true true true true true true
Weight (g) 685 544 450 450 320 420
AF Type manual focus only RXD Stepping Motor Stepping AF Motor linear motor SSM
Lens Type prime zoom zoom zoom zoom zoom
Compare Compare Compare Compare Compare
Prodotto AFBokehBuildMacroOpticalApertureUser SentimentVersatilityRiscontro degli utentiStabilization
IRIX Blackstone 15mm f/2.4 12.824.160.174.685.42137.333.368.937.8
Tamron Di III 17-70mm f/2.8 Di III-A VC RXD Compare 53.787.469.685.99184.663.489.38583.4
Nikon NIKKOR Z 17-28mm f/2.8 Compare 87.487.475.985.98884.690.867.368.737.8
Sigma Contemporary 16-28mm f/2.8 DG DN Compare 87.487.475.977.897.284.675.66862.637.8
Panasonic Leica DG Vario-Elmarit H-ES12060 Compare 98.187.484.651.99184.644.293.167.783.4
Sony G SELP28135G.SYX Compare 94.478.577.734.18867.263.492.455.593.4

Prezzo

Rapporto qualità-prezzo

Price History

60.000 JPY 70.000 JPY 80.000 JPY 90.000 JPY 100.000 JPY 3 mag30 mag 68.341 JPY

Punteggi per utilizzo

Macro (61.4)Complessivo (46.1)Budget (41.2)Street (36.5)Travel (39.2)Portrait (35.5)Landscape (50.4)Professional (43.7)Video Cinema (31.9)Wildlife Sports (33.7)

Prodotti simili