Perhaps FrontierTrek can answer this:
For the opening shot of Sins of the Father, did they retain the fully CGI shot, or did they replace it with the original elements, as was done in A Matter of Honor?
Sins of the Father (sampler):
A Matter of Honor:
That season 2 shot looks 'too good' for HTV because the multi-colored paint scheme shows through while most HTV footage makes the Enterprise flat gray. The lighting also looks very-CBS-D. Did they do that shot?
I think CBS-D found that Enterprise shot during S1.