How to make a film pack ND filter for your Polaroid SX-70 | Polaroid photography, 600 film, Film photography
POLAROID Optics 77mm Multi-Coated Variable Range [ND3, ND6, ND9, ND16, ND32, ND400] Neutral Density Fader Filter ND2-ND2000 - Compatible w/All Popular Camera Lens Models Center ND Filter - POLAROID : Flipkart.com
Amazon.com : Polaroid Optics 52mm Neutral Density Filter [ND 0.9] Compatible w/ All Popular Camera Lens Models : Camera Lens Neutral Density Filters : Electronics
Polaroid SX70 Lens Set (ND ,Closeup, fisheye filter) for Model 2 ,sonar Alpha 1,SLR690 SLR680|Film Camera| - AliExpress
Amazon.com : Polaroid Optics 52mm Neutral Density Filter [ND 0.9] Compatible w/ All Popular Camera Lens Models : Camera Lens Neutral Density Filters : Electronics