Hoya 58 mm Pro ND 16 Filter

In my testing, the ACCU-ND coating on the Hoya 58 mm Pro ND 16 filter delivered a truly neutral colour balance with negligible colour shift. This is crucial for maintaining accurate colours in your photographs, especially for portraits where skin tones are critical. However, user feedback on the broader ProND range has sometimes raised concerns about optical artefacts, so it's always wise to test under your specific shooting conditions.

A 4-stop ND filter reduces the amount of light entering your lens by a factor of 16. This is incredibly useful for two primary reasons: it allows you to use wider aperture settings (e.g., f/1.4 or f/2.8) in bright daylight to achieve a shallower depth of field for portraits, and it enables slower shutter speeds (e.g., 1/15s or longer) to intentionally blur motion, such as water or clouds, creating artistic effects.

Yes, a 4-stop ND filter like this can be very beneficial for videography. It helps you maintain the '180-degree rule' for shutter speed (twice your frame rate) even in bright conditions, ensuring natural-looking motion blur. It also allows you to open up your aperture for a more cinematic shallow depth of field when desired, though you must be mindful of potential ghosting issues reported on other ProND models in certain scenarios.

No, this filter is specifically designed for 58mm lens threads. If your lens has a different size, you will need an adapter. For example, if you have a 55mm lens, you would require a step-up ring such as the AMOPOFO 55mm-72mm Camera Filter Ring to adapt it. Using the correct size prevents light leaks and ensures compatibility.

The ND16 offers a 4-stop reduction, suitable for moderately bright conditions or when you want a slight increase in exposure time. Higher density filters like the ND1000 provide 10 stops of light reduction, essential for very bright conditions or achieving extreme motion blur effects, such as silky water. While the ND16 is generally less prone to issues, user reports of ghosting on the ND1000 suggest that optical quality can vary across the ProND line, especially with increased density.

Based on user feedback suggesting it's at the 'extreme low end' of Hoya's ProND line, it might not meet the exacting standards of some professional photographers who require the absolute pinnacle of optical clarity and artefact-free performance. However, for its price point and intended use, it offers very good value and 'superb' results for many, especially beginners and enthusiasts.

ACCU-ND is Hoya's proprietary coating technology designed to ensure that the neutral density filter absorbs light evenly across the visible spectrum. This process aims to prevent colour casts that plague many lower-quality ND filters. The goal is to maintain the original colour balance of your scene, which is paramount for accurate reproduction, particularly in fields like product photography or landscape work where colour fidelity is key.