MARUMI StarScape for M100 Holder
MARUMI StarScape for M100 Holder Package
MARUMI StarScape for M100 Holder
MARUMI StarScape for M100 Holder Filter+Package

    StarScape for M100 Holder


    Key Features

    Exclusive light pollution cut filter for M100 with scratch resistance
    Avoid orangish or yellowish color shift by artificial light source
    The most outstanding maintenance performance, Dust-/Water-/Oil-/Fingerprint-resistant
    Double side Coating for low reflection
    Ultra-thin-aluminum frame structure
    Made in Japan

    • Product Type: SQUARE
    • Barcode: 4957638734110

    Marumi StarScape for M100 Holder

    The Marumi StarScape for M100 Holder is an exclusive light pollution cut filter designed for Marumi 100mm Magnetic Holder (M100).

    • Enables astrophotography to bring well-controlled color balance by suppressing unwanted color shifts to an orangish or yellowish picture.
    • To secure the exposure that is indispensable for starscape photography, only 1/4 stop equivalent to 1.2x Filter factor is realized.
    • Easy-to-maintain coating embedded, twelve layers in total on both sides;
    • Water-/Oil repellent coating sheds water off simply also by the air blower. Nuisances such as sweat, skin crème, lotion, fingerprint, or compounded grease stains will be wiped off.
    • Anti-reflection coating sustains a low reflection.
    • Made in Japan

    StarScape for M100 effectively cuts light pollution, while the Soft GND8 (0.9) prevents artificial city lights from overexposing, resulting in a well-balanced nightscape milyway with enhanced contrast.

    What do we use a square filter instead of a round screw-in filter for?
    When and on which occasion do we need to use Marumi square filter?

    Marumi innovative M100 Magnetic Filter System allows you to;
    - combine a large variety of GND/ND and Circular Polarizer to enable an overwhelming contrast-driven expressiveness
    - shoot with no vignetting even with 16mm wide lens due to the ultra-thin frame structure overlaying ND/GND and Circular Polarizer.
    - adjust position of graduation up and down, observing the composition through the optical or electronic viewfinder
    - one second-attach/detach filters by magnetic force with no time consuming compared to screw-in filters into thread
    - bracket a series of GND/ND and almost all of your lens line-up for DSLRs and Mirrorless at hands.
    - keep all-in-one set in a pouch exclusive for M100 (optional) easy carrying


    What do we use a StarScape Filter for?
    When and on which occasion do we need to use Marumi StarScape filter?

    StarScape filter is essential for photographers aiming to capture the true beauty of the night sky in areas affected by light pollution.
    It is particularly useful for astrophotography, nightscape photography, time-lapse shooting like the above short film, and photographing phenomena like the Aurora Borealis.
    it reduces the need for extensive post-processing to correct light pollution, saving time and effort. 

    The below before-/after images show the drastic difference in impressions caused by the StarScape filter, giving the cool bluish starry night.

    Marumi offers three different filter construction for StarScape.
    - StarScape for Screw-in filter
    - StarScape for M100, Square fiter
    - StarScape for Magnetic Slim


    General Info
    ModelMarumi StarScape for M100 Holder
    Main Characteristics
    Filter factor1.2x
    CoatingWater-/Oil Repellent, Fingerprint-resistant
    CoatingLow reflection
    Frame MaterialMagnetic
    Frame MaterialAluminum
    Frame structureNon-rotating
    Frame structureUltra-thin frame

    Optical Properties of StarScape

    The StarScape filter selectively absorbs specific wavelengths of strong light emitted by artificial urban light sources, which are the main cause of light pollution, while allowing the wavelengths from celestial bodies to pass through. This effectively cuts light pollution without compromising the colors of celestial objects.

    Marumi StarScape Kit

    Sources of Light Pollution

    Light pollution refers to artificial light sources such as:

    • Mercury lamps (435.8, 546.1, 577.0, and 579.1 nm)
    • Sodium lamps (589 nm)
    • LEDs (approx. 470 nm)
    • Fluorescent lamps
    • Automobile headlights that brighten the night sky and make it difficult to see stars

    The transmission curve above shows a decrease in transmittance for specific visible light wavelengths (400-700nm), such as mercury lamps (435.8, 546.1, 577.0, and 579.1 nm), sodium lamps (589 nm), and LEDs (approx. 470 nm). This indicates that these artificial light sources emit harmful orange and yellow light, which can interfere with astronomical observations and contribute to light pollution, making it difficult to see cold color stars in the night sky.

    What is "Light Pollution"?

    Light pollution refers to artificial light sources such as;
    mercury lamps,
    - sodium lamps,
    - LEDs,
    - fluorescent lamps,
    - or Automobile headlights that brighten the night sky and make it difficult to see stars.

    In modern inhabited areas, it is hard to see the Milky Way in urban cities, and when you take a picture, the night skyscape sometimes turns obviously yellowish. This color shift phenomenon is caused by, so to say, "Light Pollution".
    This color shift makes the starscape-/nightscape photograph enthusiasts very annoyed.

    How Marumi StarScape eliminates Light pollution?

    By kneading a component that absorbs unwanted light into the glass, the color shift phenomenon will be suppressed, turning the overall image natural bluish.
    In addition, no matter which white balance is selected, there is no extreme color shift.

    The brightness, which is a significant element for starscape photography, can be sufficiently secured at an exposure multiplier 1.2 (about 1/4 stop).


    The StarScape filter is also available in the Magnetic Slim, and Screw-in type of filter.