Threaded camera filters:
WHY ARE THREADED CAMERA FILTERS ONLY AVAILABLE IN BLACK PLOYMER?
Glass filters and R-G film both have highly reflective coatings that can cause internal reflections between the filter and camera lens since the filter and lens are in close proximity. This problem is less likely to occur with telescopes, however, mounted telescope filters can be tilted slightly to move any internal reflections off the central axis and out of view
| THREAD SIZE | THREADED CAMERA FILTERS | PRICE US$ | PART # |
| 37mm | Black Polymer | 49 | 37T |
| 46mm | Black Polymer | 49 | 46T |
| 48mm | Black Polymer | 49 | 48T |
| 49mm | Black Polymer | 49 | 49T |
| 52mm | Black Polymer | 52 | 52T |
| 55mm | Black Polymer | 52 | 55T |
| 58mm | Black Polymer | 52 | 58T |
| 62mm | Black Polymer | 55 | 62T |
| 67mm | Black Polymer | 55 | 67T |
| 72mm | Black Polymer | 55 | 72T |
| 77mm | Black Polymer | 59 | 77T |
| 82mm | Black Polymer | 59 | 82T |
