Hehe, Looking at the people here, I think I am a very obscure photographer

Many shots I have taken were at at 50mm F1.8 at ISO 1600
In couple of cases I underexposed and then in RAW pushed up the exposure making it effective ISO 3200.
But then with a IS in body, you don't need all this circus.
Coming back to E-3 I saw a few samples with the sigma 50-500(whopping 1000mm). They were quite good. Handheld moon shots.