DRT
Drop-in Filter Mount. Specially shaped frame compatible with Canon and Meike drop-in filter mount adapters.
Transform Any Lens
DRT mount is compatible with drop-in filter adapters positioned between cameras and lenses. It enables IDAS filter attachment even on fisheye or ultra-wide lenses that lack front filter threads.
High Cost-PerformanceWhen swapping lenses, the filter stays inside the adapter, making it extremely easy to share a single filter across different focal lengths and thread diameters.
Stray Light ShieldingThe specialized holder completely blocks external stray light from entering.
Mount Example
Specifications & Compatibility
| Compatible Adapters | Canon EF-EOS R Drop-in Filter Adapter, Meike adapters, etc. |
|---|---|
| Glass Thickness | 2.0mm |
| Supported Formats | Various drop-in filter mount adapters |
| Production | Made in Japan by ICAS Enterprises |
Product Lineup & Purchase Guide (DRT Models)
Available through authorized domestic online retailer (BASE) and dealer network.
NBZ-ll DRT
[Primary Application] Dedicated for Canon EF-EOS R drop-in adapter. Dual-band nebula booster.
GNB DRT
[Primary Application] Galaxy & Nebula booster opening NIR transmission.
DTD DRT
[Primary Application] Next-gen natural nightglow & light pollution cut color booster.
NGS1 DRT
[Primary Application] Base light pollution cut filter. Direct successor to LPS-D3.
HEUIB-II DRT
[Primary Application] H-alpha enhancement UV/IR cut filter. Ideal for modified DSLRs.
ODW DRT
[Primary Application] Optical clear protective filter preserving parfocal backfocus.