Original Price：HK$1100

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

[IDAS ODW Filter (Optical Distance Worker)]
More accurate and flexible optical path length --
IDAS's ODW (Optical Distance Worker) filter is a clear type adjustment filter that maintains a constant optical path length when used in combination with a narrow band filter. It is designed to be used in combination with NB2-PM or NB3-PM in particular, and allows you to select whether or not to cut IR depending on the application while preventing shifts in the focus position and changes in the imaging position. This auxiliary filter is ideal for users who pursue the precision of their optical systems.

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


[Features]
- Highly transmittant clear filter (for optical adjustment/protection)
- Ideal for matching the optical path length with a filter
- Compatible with Canon/Meike mount adapters
- Can be attached smartly to the rear side regardless of lens
- Made in Japan, high-precision optical glass (no AR coating)

[Specifications]
- Filter type: DRT type (for drop-in rear mount only)
- Effective diameter: 45mm
- Thickness: 2.0mm
- Transmission characteristics: Nearly 100% (no wavelength selection)
- Surface treatment: Anti-reflective AR coating
- 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]
・People who want to use the mount adapter without a filter, but want to maintain the optical path length and dust resistance
・People who want to prevent dust from getting on the sensor surface
・People who want to match the optical balance when not using a filter
・People who are using a genuine Canon or Meike drop-in holder