Camera Filter Set SEAGULL SB2649 — 40.5mm CPL, UV, Gray Graduated

SEAGULL SB2649 is a three-piece 40.5mm camera filter set that includes a circular polarizer (CPL), an ultraviolet (UV) filter and a gray graduated neutral density filter. Each filter is threaded to fit lenses with a 40.5 mm front thread. This compact set is intended to reduce reflections, block ultraviolet haze, protect the lens front element and help balance exposure between bright skies and darker foregrounds, making it suitable for landscape, outdoor and travel photography.

Advantages

The circular polarizer reduces glare from non-metallic surfaces and increases color saturation and contrast without changing exposure. The UV filter blocks ultraviolet light and provides a physical protective layer for the lens front. The gray graduated filter has a gradual transition that attenuates light in the brighter portion of the scene to help retain highlight detail while preserving foreground exposure. All three filters share the same 40.5 mm thread size for quick interchangeability and compact transport.

Suitable for

• Landscape photography where sky and foreground have different brightness levels
• Outdoor and travel shooting to protect the lens and control reflections
• Scenes with water, foliage or glass where glare reduction improves color and contrast

Key specifications

• Filter set composition: circular polarizer (CPL), ultraviolet (UV), gray graduated neutral density (GND)
• Filter thread size: 40.5 mm
• Mount type: threaded screw-on filter
• Graduation type: gradual neutral density transition for sky correction
• Primary functions: polarization, UV protection, graduated light attenuation

How to use

Screw the desired filter onto the lens front thread and ensure it is seated evenly. Use the CPL by rotating its outer ring while observing the viewfinder or live view until reflections are reduced and desired saturation is achieved. Fit the gray graduated filter with the darker area aligned to the brightest portion of the scene, sliding or rotating slightly as needed to position the transition line. Keep the UV filter on for general protection or remove it when stacking multiple filters could cause vignetting on wide-angle lenses.

Usage recommendations

For best results, check for vignetting when stacking filters on wide-angle lenses and use the CPL at 90 degrees to the sun for maximum polarization. Clean filters with a soft microfiber cloth and appropriate fluid to maintain optical performance and protect coatings.