We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
Rectangular graduated mauve filter with hard edge transition

Cokin

Cokin A668 M1 Graduated Fluorescent Mauve Filter Hard Edge 2-Stops camera filter

SKU CH-SS3N-1VNS7

A graduated fluorescent mauve filter with a hard edge and 2-stop density for enhancing dull skies with a distinct transition

  • 2-stop density deepens dull skies for dramatic contrast
  • Hard-edge transition aligns cleanly with clear horizon lines
  • Rectangular format lets you shift the gradient within the frame
  • Fits Cokin A-Series holder for broad camera compatibility
  • Fluorescent mauve tint adds distinctive colour to landscapes

What the Cokin A668 M1 filter does

The Cokin A668 M1 is a rectangular graduated fluorescent mauve filter with a hard edge and a 2-stop density. It is designed for photographers who want to add dramatic colour to dull or hazy skies. The filter fits the Cokin A-Series holder system used by both amateur and professional photographers.

Behaviour under sustained use

The hard-edge design provides a distinct, abrupt transition between the coloured and clear sections, making it reliable for scenes with a clear horizon line. The 2-stop density consistently reduces light in the filtered area, allowing predictable exposure adjustments across multiple frames without variation.

Installation and common issues

The rectangular shape slides into the Cokin A-Series holder and can be shifted vertically to align the gradient with the horizon or composition. Misalignment of the hard edge with the horizon creates an unnatural line in the image. The mauve tint may not suit every scene and can produce unwanted colour casts if used incorrectly.

Highlights

  • 2-stop density deepens dull skies for dramatic contrast
  • Hard-edge transition aligns cleanly with clear horizon lines
  • Rectangular format lets you shift the gradient within the frame
  • Fits Cokin A-Series holder for broad camera compatibility
  • Fluorescent mauve tint adds distinctive colour to landscapes

Specifications

No published specifications for this item yet.

Questions about this item

Does the A668 M1 filter generate any heat or noise during long exposures?

The A668 M1 is a passive glass filter with no electronics, so it produces no heat, noise, or power draw during extended use.

What holder system is required to mount the A668 M1 on a lens?

The rectangular A668 M1 requires a Cokin A-Series filter holder and the appropriate adapter ring for your lens thread size.

Will the hard-edge transition of the A668 M1 align cleanly with the horizon on a vintage manual-focus lens?

Yes, the hard-edge design creates a distinct transition that aligns precisely with the horizon regardless of lens age or focus type.

Also in this aisle

People compared these

Same shelf, same checkout — eight coins and a 30-minute rate lock.