Sigma 18-200 versus Nikon 18-55 & 55-200

[wowzer]

I had to do the test to see if I was going to keep the lens in lieu of my nikons. I would give up a bit of quality for the ease of use. I'll have to pickup some faster lenses in the near future...maybe a nikon 80-200 2.8.

OTOH, I may be able to get away with the Tamron 28-75 lens....it's been rated as good and is fast enough for what I need.