IRIX Blackstone 15mm f/2.4

依据客户实际撰写评价的时间--让你看到最初的好评是否持续。

1. Q2 201963/1003.8★4 条评价

   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 条评价

   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 条评价

   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 条评价

   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 条评价

   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 条评价

   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 条评价

   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 条评价

   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.

基于 69 条带日期的客户评价，按日历季度分组。分期分析为英文。