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  3. TIFFEN HM66

TIFFEN HM66 Mirror Ir Blocking Square Filter Camera 6.6X6.6

Hm66 Tiffen Hot Mirror Ir Blocking Square Filter 6.6x6.6 In For Camera Photography

( Brand: Tiffen ), ( Manufacturer Part Number: HM66 ), ( Part Type: Mirror Filter Camera ), ( Filter Shape: Square ), ( Filter Color: Pink ), ( Item Height: 6.6 In ), ( Filter Effects: Infrared Blocking ), ( To Fit: Camera, Digital Camera, Film Camera ), ( Filter Size: 6.6 In X 6.6 In )

Review TIFFEN Hot Mirror Ir Blocking Square Filter 6.6x6.6 In Camera Photography

The Tiffen HM66 Mirror IR Blocking Square Filter is a high-performance optical accessory designed to enhance the clarity, precision, and versatility of your photographic and videographic workflows, particularly when working with medium-format cameras or systems that utilize square sensor formats. Crafted from premium optical-grade glass, this filter is engineered to effectively block infrared (IR) light while maintaining a near-perfect transmission of visible light, ensuring that your images remain vibrant, true-to-life, and free from the unwanted distortions and color shifts that IR contamination can introduce. The HM66 series is renowned for its exceptional mirror-like finish, which not only minimizes reflections and flare but also contributes to a more professional and polished look in both still photography and video production. With dimensions of 6.6x6.6 inches, this filter is specifically tailored for medium-format cameras, offering a seamless fit for lenses with corresponding square filter threads, such as those found on Hasselblad, Mamiya, or other medium-format systems. Whether you're capturing landscapes with rich, saturated colors, conducting architectural photography where precision and detail are paramount, or shooting video content where color accuracy is critical, the HM66 Mirror IR Blocking Filter ensures that your lens delivers its full potential. Its robust construction and precision-engineered design make it a durable and reliable choice for both studio and on-location use, while its compatibility with Tiffen s extensive range of filter accessories such as step-up rings, filter holders, and protective cases further expands its utility. By integrating this filter into your setup, you re not only protecting your sensor from IR interference but also elevating the overall quality of your imagery, allowing you to focus on capturing the essence of your subjects with unparalleled clarity and fidelity.

### **Pros and Cons of buying a Tiffen HM66 Mirror IR Blocking Square Filter (6.6" x 6.6")**

#### **Pros:**

1. **Effective IR Blocking** The HM66 is designed to block infrared light, which can interfere with color accuracy, especially in low-light or high-contrast scenes. This is particularly useful for astrophotography, landscape photography, and situations where IR reflections (e.g., from glass or water) would otherwise distort colors.

2. **High Optical Quality** Tiffen is a well-respected brand known for producing high-quality optical filters. The HM66 is made with precision-ground glass, minimizing vignetting and maintaining sharp image quality.

3. **Square Form Factor** Unlike round filters, the square design allows for more flexibility in filter stacking and compatibility with various lens sizes, especially when using step-up/down rings. This is particularly useful for wide-angle lenses where round filters can cause vignetting.

4. **Durable Construction** The filter is housed in a sturdy metal frame, which helps protect the glass from scratches and damage. The threaded edges also allow for easy attachment to lens hoods or filter holders.

5. **Versatile Use Cases** Beyond IR blocking, this filter can be useful in reducing lens flare, improving contrast in certain lighting conditions, and protecting lenses from dust and moisture when used with a lens cap.

6. **Compatibility with Other Filters** Since it s a square filter, it can be combined with other Tiffen square filters (e.g., polarizers, ND filters) for advanced filtering setups without the need for adapter rings in some cases.

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#### **Cons:**

1. **Cost** High-quality optical filters like the HM66 are not cheap. For a 6.6" square filter, the price can be significantly higher than round alternatives, especially if you need multiple sizes.

2. **Vignetting Potential** While square filters reduce vignetting compared to round ones on wide-angle lenses, they can still cause slight edge darkening if not properly aligned or if using a lens with a very short focal length.

3. **Bulkiness** Square filters are larger and heavier than round ones, which can make them less convenient for travel or handheld shooting. They also require more storage space.

4. **Compatibility Issues** Not all lenses or filter systems support square filters. You may need step-up/down rings or a filter holder, adding to the cost and complexity. Some lenses with very large front elements may still struggle with vignetting.

5. **Overkill for Some Uses** If you primarily shoot in well-lit conditions without IR issues (e.g., portrait or studio photography), the benefits of an IR-blocking filter may not justify the expense. A basic UV or polarizing filter might suffice.

6. **Maintenance** The metal frame and glass require careful handling to avoid scratches. Cleaning can be more involved than with a simple round filter, especially if you re stacking multiple filters.

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### **Ending Conclusion:**

The **Tiffen HM66 Mirror IR Blocking Square Filter** is a high-quality, versatile tool for photographers who prioritize color accuracy, IR reduction, and flexibility in filter setups. It excels in niche applications like astrophotography, landscape shooting with reflective surfaces, or scenarios where lens flare is a concern. However, its cost, bulkiness, and potential vignetting make it less ideal for casual shooters or those who don t frequently encounter IR issues.

If you work in fields where IR interference is a problem (e.g., shooting through glass, capturing night skies, or dealing with strong backlighting), the HM66 is a worthwhile investment. For general photography, a round IR-blocking filter or a more affordable square filter might be sufficient.

### **Recommendation:**

- **Buy it if:** You shoot landscapes, astrophotography, or scenarios with significant IR reflections, and you value the flexibility of square filters for stacking. It s also a good choice if you already own other Tiffen square filters and want a cohesive system.

- **Skip it if:** You re on a budget, shoot mostly in controlled environments (e.g., studios), or don t frequently encounter IR issues. In such cases, a round IR-blocking filter or a polarizer might be more practical.

- **Consider alternatives:** If you re unsure, test a round IR-blocking filter first (e.g., a 77mm Tiffen IR cut) to see if you notice a difference in your images before investing in a square version. Alternatively, look for used or discounted versions if budget is a concern.

Details:

Color Accuracy: Ensures accurate color reproduction, particularly in challenging, high-IR environments like sunsets or fires. 6x6 hot mirror Benefits IR Pollution Control: Ideal for cameras without strong internal filtration, these filters block near and far infrared wave length s. Comes.with the padded Tiffen case.

part #: hm66 price

  • $599.00

specifications filtecam:

  • brand: Tiffen
  • mpn: Hm66
  • part type: Mirror Filter Camera
  • filter shape: Square
  • filter color: Pink
  • item height: 6.6 In
  • filter effects: Infrared Blocking
  • to fit: Camera, Digital Camera, Film Camera
  • filter size: 6.6 In X 6.6 In

offer filtecam:

  • availability: In Stock
  • options: Ship-to-home
  • sold: 0
  • started: February 27, 2026
  • best offers: True
  • quantity: 1

general filtecam:

  • condition: Used
  • Cameras Photo > Lenses Filters > Filters

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  • # reviews: 367
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part type: mirror filter camera, filter shape: square, filter color: pink, item height: 6.6 in, filter effects: infrared blocking, to fit: camera, digital camera, film camera, filter size: 6.6 in x 6.6 in,
category: camera & photo > cameras photo > lenses filters > filters, sku: 15355077904907721,
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1 offer $599.00 USD
  • Used. Offer #1 priced at $599.00 + $25.35 shipping estimate = $624.35* total. Clean glass.+$25.35 shipping

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