2 eyepices tried so far ...
Hi James.
I am a serious photographer who has just started birding.
I recently bought an opticron IS60 (Non ED) and a 40810 HDF eyepice - about x18 mag on my scope and it is very good, allowing me to get some great photos from up to 20yards/20metres away. These will produce excellent 9x6 photos. On your 80mm ED this would fer better and have x23 magnification.
As I then wanted to shoot birds further away I next bought a 40858 x32 eyepiece (On my 60mm, but x44 on an 80mm ED.). The results are disapointing. Although it has a wide field of view and good eyedpth, my Opticron IS60 (non ED glass) lets it down badly. The images are big, even from 45yards/45meters away, but are too soft for my fussy photographic eye.
I think that on your 80ED scope the results should be very acceptable, due to the better OG lens.
I am using it with a Fuji F10 which has a fairly small diameter lens - but it is a very sharp lens. This allows me lots of flexibilty to position the camera, eitrher close or far from the eyepiece. But I have no experience of you r cannon.
Both my eyepieces are the high quality HDF types, and I bought Prime lenses as opposed to a zoom, because I am a bit of a quality fantatic. I am now saving for an 80mm ED opticron.
Here is an example shot from about 45 feet away. It has been reduced to about third size. The original is large photo is stunning.
http://www.t1000.co.uk/camera/bird_5080sgnd_vse.jpg
It doesnt quite have the bite of £2500 pounds worth of pro SLR gear. But at a total of £400 its more than okay.
Hope it helps.