So right now I have a 1d ii and a 7d. Generally, My 7d is mostly used for birding and the 1d is used for most other photography. Though I almost always carry both camera with me wherever I go and use both in what ever circumstance, that is just the guiding principle I run under.
I am considering upgrading the 1d ii to a mark iii. Mostly because one is available locally cheap, and while I havnt done much looking into the mark iii, it seems like a good upgrade in terms of focus system, high ISO proformance, and the LCD screen would be nice. Feel free to comment on this general upgrade.
My major question is, would the 1d iii be a better birding lens than the 7d? Would I really even want the 7d for birding if I had a mark iii?
For reference I use an old non-is 300L for birding with a 2x converter. I doubt I will be ale to afford upgrading it anytime soon. As for the rest of my lens line up, it is ever changing but I will likely never part with my 135L. Also, I just decided to try an all around zoom lens, and picked up a 15-85. So if I got rid of my 7d I'd have to ditch the 15-85 and I think my siggy 8-16 as well.
I'm guessing that if I were to replace the 7d it would be with a 5dc or a 1Ds, maybe a mark ii of one of them, but budget wise that might be tough.
Okay I know that's a lot there, but please give me some advice. Open to any and all comments.
Edit: Also, I've updated my gear list to accurately reflect my current lens line-up. I also have a 17-40L on hand, but either it or the 15-85 need to go.
. I have a 7D and a 1D4. I had the 7D first and was quite happy with it. Used it for birding and it seemed fine. Then I got the 1D4. Now I use it almost all the time and the 7D sits a lot more. The exception is when it's plenty bright and I won't need to use a higher ISO and inject noise into the pictures, and also when I sense that the tighter (in my mind) single point focus will be useful, like when I'm hunting little birds in densely branched underbrush. I do feel the single focus point of the 7D has a finer point than the single point on the 1D4.



