Urth ND Selects Filter Kit With 3 Filters Plus+ - 49mm

ND stands for 'Neutral Density'. A Neutral Density filter reduces the amount of light that passes through the lens without affecting the color or clarity of the image.

The numbers refer to the amount of light they block. ND8 blocks 3 f-stops of light, ND64 blocks 6 f-stops, and ND1000 blocks 10 f-stops. Higher numbers block more light, allowing for longer exposures.

Yes, you can stack these filters. For example, combining an ND8 and an ND64 would give you a total of 9 stops of light reduction (3 + 6 = 9).

This filter is specifically designed for lenses with a 49mm filter thread. You can find your lens's filter thread size by looking for a symbol on the lens barrel that typically looks like a circle with a line through it, followed by a number (e.g., ø49mm).

ND filters allow you to use slower shutter speeds in bright conditions to capture motion blur in water or clouds, or achieve a shallow depth of field in bright light when you need a wide aperture.

The filters are made with high-quality German SCHOTT glass and feature a 20-layer nano-coating for durability and scratch resistance. However, like all lens elements, they can be scratched if not handled with care.

The 'Plus+' designation typically refers to Urth's enhanced coatings and glass quality, ensuring superior light transmission and color neutrality.

Ensure you are using the correct filter size for your lens. If vignetting persists, try removing other accessories from the lens or consider if the lens's wide-angle capabilities combined with the filter rim are causing the issue. The ultra-slim rim is designed to minimize this, but it can occur on some ultra-wide lenses.

The German SCHOTT glass with 20-layer nano-coating is designed for neutral color transmission. Ensure the cast is not due to your camera's white balance setting. If it is the filter, clean the glass gently. If the issue persists, contact customer support.

Ensure the filter threads and lens threads are clean and free of debris. Do not force the filter; if it feels stuck, try gently wiggling it while unscrewing. Avoid cross-threading.