Kodak 3 x 3" #87 Opaque Infrared Wratten Gel Filter - This filter is for black and white infrared film when you only want to transmit the infrared spectrum and none of the visible spectrum. Filter factor is determined by the film sensitivity.
Most Kodak gelatin filters are available in 3 x 3" (75 x 75mm), 4 x 4" (100 x 100mm), 6 x 6" (150 x 150mm), and 14 x 18" (350 x 450mm).
| Type | Wratten |
| Size | 3 x 3" (75 x 75mm) |
| Grade | 87 |
| Filter Factor | 8 (+3 stops) |
| Multi-Coated | Not Applicable |
| Rotating | Not Applicable |
| Effect | Transmits the infrared spectrum only and no visible light |
| Application | Infrared photography |
| Color Temperature | Not Specified by Manufacturer |
| Construction | Gel |
| Front Filter Thread Size | Not Applicable |
| Front Lens Cap Size | Not Applicable |