2" HA or Clip in EOS HA Filter
I have two DSLR cameras, the first being a full frame unmodded 21.1mp and the second a modded and cooled 400D.
I occasionally get to darker skies, but do more imaging from home under substantial light pollution.
I am considering shooting in HA which would assist under poor light conditions and would be interested in any opinions as to whether there could be an advantage using both cameras through a threaded 2" HA filter, or whether I should just go for an EOS clip and solely use the 400d in HA? I know the modded camera with the fitted UV/IR filter makes it more sensitive to HA but my understanding is that a 7nm or a 12nm filter with dramatically increase contrast?
Last edited by Heath; 10-03-2011 at 10:18 AM.