Original Price：HK$2850

For Canon EF-EOSR drop-in mount adapter & Meike MK-EFTR-C (EF-R) & MK-EFTE-C (EF-E) drop-in mount adapters：Installation Manual

Capture beautiful nebulae even under urban light pollution -
IDAS's narrowband filter for astronomical photography, the "NBZ II DRT," is a high-performance filter with a dual-band design that simultaneously transmits the wavelengths of Hα (656.3 nm) and OIII (500.7 nm).

This model is a "DRT type" exclusive design that is compatible with the Canon genuine EF-EOSR drop-in mount adapter and Meike EF-R/E drop-in holder,
realizing an efficient and high-image-quality rear mount configuration that does not require changing filters every time you change lenses.

[Features]
・Dual band design compatible with both Hα and OIII
・Halo-free design that produces almost no halos around bright stars
・Significantly reduces the effects of light pollution and moonlight
・Compatible with Canon/Meike mount adapters
・Can be attached smartly to the rear side regardless of lens
・Made in Japan, high-precision optical glass, AR coating

[Specifications]
・Filter type: DRT type (for drop-in rear mount only)
・Effective diameter: 45mm
・Thickness: 2.0mm
・Compatible wavelength range: Hα (656.3nm)/OIII (500.7nm)
・Surface treatment: Dichroic coat/AR coat
・Country of manufacture: Japan

[Compatible mount adapters]
・Canon EF-EOSR drop-in mount adapter
・Meike MK-EFTR-C (EF → RF mount)
・Meike MK-EFTE-C (EF → E mount)

[Recommended for the following people]
・Those who want to avoid the hassle of changing filters for each lens
・Those who want to photograph nebulae in areas with a lot of light pollution (urban and suburban areas)
・Those who want to capture beautiful images of Hα and OIII targets (M42, North American Nebula, California Nebula, etc.)
・Those who already own a genuine Canon or Meike drop-in holder
・Canon and Sony mirrorless interchangeable-lens users who want high-quality, halo-free nebula depictions