| Joined: | Thu Apr 12th, 2012 |
| Location: | Kitchener, Ontario Canada |
| Posts: | 571 |
| Status: |
Offline
|
Jonathan, It's interesting that you said the hotspot wasn't too bad using the external filter. Clearly putting the filter inside is exacerbating this effect.You could compare a few shots with and without an external filter. A 720nm shouldn't effect your exposure very much and it may reduce the hotspot.
____________________
There is nothing worse than a sharp image of a fuzzy concept ;~) Mike Grace