I love my 7D. I needed a camera that did well at high ISO as I can't afford long-fast glass, so it was the logical step from my 30D. Since I had the CP on this lens to cut ambient room glare on the glass tank, it also slowed my lens down 2 stops. Even with flash, I needed to use ISO 5000 to use a small enough aperture to maintain some DOF. This never would have played with my 30D.
I don't use the soligor much anymore as I rarely shoot film. Back in the 70s I used it a lot and it did a pretty good job.