Fits to Insert Filters as below:

(1), 100*100mm ND Filters ( 2.0mm thickness).

(2), 100*150mm Graduated ND Filters( 2.0mm thickness).

(3), 100*100mm Polarizing Filters ( 2.0mm thickness).

(4), Haida 100 series Dedicated PROII MC C-POL

Haida 100 series PROII MC C-POL( Rear Tread at 86mm) is dedicated designed for Haida 100 Series Filter Holder. It mounts on the front of Adapter Ring directly.

The Ultra Slim C-POL is only 2.7mm thickness. No effect to use ND filter at the first slot.

How to use the holder?

(1), Screw the 100 series Adapter Ring on the lens.

(2), Screw the 100 series C-POL filter on the Adapter Ring, then, find the best angle to remove light reflection by rotating the front metal ring of C-POL.  This dedicated CPL will

not affect the Insert ND at the 1st slot (Close to Lens)

(3), Fix the Aluminum Holder on the Adapter Ring.

(4),Test the holder by clockwise rotating it 360 degrees.

(5), Infix the insert ND or GND filter, normally, the ND filter be infixed in the 1st side guide (Close to the lens).

For Haida ND1.8, ND3.0, and ND3.6 Insert Filters, the gaskets are sticked on the filter in advance, also, optional ones are available. Normally, the ND fitlers should be used in the 1st slot, that means, the slot

close to lens.

(6), Infix the Insert GND.

Haida 100 Insert Filter Pouch is available. It could pack 6 pieces 100*100 or 100*150mm filters, and 1 piece Filter Holder and Adapter Ring. Model No HD2515 (http://www.haidaphoto.com/en/productsd.php?pid=526)