Tiffen Black Pro-Mist 1/4 Circular Polarising Filter - 77mm

Yes, but it is recommended to use a screw-in hood or a clamp-on matte box, as reaching the rotating ring of the CPL while a bayonet hood is attached can be difficult.

The 1/4 rating refers to the density of the Black Pro-Mist diffusion. It is a subtle strength that provides a cinematic glow without drastically altering the overall exposure or sharpness of the image.

No, thanks to Tiffen's ColorCore technology, the filter is designed to be color-neutral.

While it can be used in low light, the diffusion effect may interact with point light sources (like streetlights) to create a glowing bloom. The CPL element will also reduce the amount of light entering the lens, requiring a slightly longer exposure.

No, this filter does not interfere with modern phase-detection or contrast-based autofocus systems.

Verify that the filter is threaded correctly and is perfectly flush with the lens mount. Dust or moisture on the glass can also cause unwanted softness.

Ensure no other filters are stacked on top of the unit. If using an ultra-wide angle lens, the filter frame may be visible; consider using a larger diameter filter with a step-up ring if vignetting persists.

The polarising effect is dependent on your angle to the light source. Rotate the outer ring slowly until you see the reflections vanish; if the light source is directly behind or in front of the lens, the polariser will have little to no effect.