IRIX Blackstone 11mm f/4
The 11mm focal length, constant f/4 aperture, and advanced optic layout with three aspherical and two ED elements ensure sharp, rectilinear images free of distortion, housed in a weather-sealed magnesium alloy body. A manual focus mechanism includes a focus lock, UV fluorescent engraved markings, and a rounded nine-blade diaphragm for precise control and smooth bokeh. This lens suits architectural and interior photographers who demand a rugged, weather-resistant ultra-wide prime for detailed, field-based work.
لمحة سريعة
المزايا والعيوب
الإيجابيات
- Strong optical (88th percentile) 88th
- Strong macro (73rd percentile) 73rd
السلبيات
- Below average user sentiment (11th percentile)
- Below average af (15th percentile)
- Below average build (20th percentile)
- Below average aperture (24th percentile)
آراء المالكين
كيف تغيّر رأي المالكين بمرور الوقت
حصرياستنادًا إلى وقت كتابة العملاء لتقييماتهم فعليًا - لترى ما إذا كان الثناء المبكر قد استمر.
استنادًا إلى 21 مراجعة عملاء مؤرخة، مجمّعة حسب الربع التقويمي. تحليل الفترات باللغة الإنجليزية.
الأدلة
الأداء
المواصفات التقنية
المواصفات الكاملة
Optics
| Type | Wide-angle |
| Focal Length Min | 11 |
| Focal Length Max | 11 |
| Elements | 16 |
| Groups | 10 |
| Aspherical Elements | 3 |
| ED Elements | 2 |
| Coating | Neutrino coating |
Aperture
| Max Aperture | f/22 |
| Min Aperture | f/4 |
| Constant | Yes |
| Diaphragm Blades | 9 |
Build
| Mount | Pentax K |
| Format | full-frame |
| Weather Sealed | Yes |
| Weight | 0.8 kg / 1.7 lbs |
AF & Stabilization
| AF Type | Manual Focus |
| Stabilization | No |
Focus
| Min Focus Distance | 275 |
مقارنة بالمنافسين
| Spec | IRIX Blackstone 11mm f/4 | Sigma Contemporary 16-300mm f/3.5-6.7 DC OS | Tamron Di III 18-300mm f/3.5-6.3 Di III-A VC VXD | Canon RF 28-70mm f/2.8 IS STM | Panasonic LUMIX S S-R28200 | Sony G Master SEL70200GM2 |
|---|---|---|---|---|---|---|
| Focal Length | 11mm | 16-300mm | 18-300mm | 28-70mm | 28-200mm | 70-200mm |
| Max Aperture | f/22 | f/3.5 | f/3.5 | f/2.8 | f/4 | f/2.8 |
| Mount | Pentax K | Sony E | Fujifilm X | Canon RF | L-Mount | Sony E |
| Stabilization | false | true | true | true | true | true |
| Weather Sealed | true | true | false | true | true | true |
| Weight (g) | 790 | 615 | 92 | 495 | 413 | 1045 |
| AF Type | Manual Focus | HLA | VXD linear motor | STM | Autofocus | XD Linear Motors |
| Lens Type | wide-angle | zoom | zoom | zoom | macro | telephoto |
| Compare | Compare | Compare | Compare | Compare |
| المنتج | AF | Bokeh | Build | Macro | Optical | Aperture | User Sentiment | Versatility | التقييم الاجتماعي | Stabilization |
|---|---|---|---|---|---|---|---|---|---|---|
| IRIX Blackstone 11mm f/4 | 15.2 | 27.7 | 20.3 | 72.5 | 88 | 24 | 11.3 | 34.1 | 55.4 | 35.6 |
| Sigma Contemporary 16-300mm f/3.5-6.7 DC OS Compare | 54.6 | 84 | 57.8 | 86.5 | 98.8 | 76.8 | 0 | 99.6 | 83.1 | 99.1 |
| Tamron Di III 18-300mm f/3.5-6.3 Di III-A VC VXD Compare | 98.1 | 74.8 | 96.3 | 88.4 | 73.5 | 76.8 | 34.5 | 99.2 | 83.1 | 80.5 |
| Canon RF 28-70mm f/2.8 IS STM Compare | 85.4 | 86 | 67.2 | 77.3 | 84.4 | 83.7 | 0 | 77.5 | 88 | 98.3 |
| Panasonic LUMIX S S-R28200 Compare | 54.6 | 77.7 | 73.8 | 89.5 | 90.9 | 71.2 | 0 | 95.6 | 75.4 | 99.4 |
| Sony G Master SEL70200GM2 Compare | 98.1 | 90.8 | 33.5 | 33 | 88 | 83.7 | 83.3 | 79.4 | 94.8 | 80.5 |
تقييمات حسب الاستخدام
مراجعة كاملة قادمة قريبًا. المواصفات والتقييمات والأسعار والرسوم البيانية أعلاه محدَّثة دائمًا.
