I had been seriously considering purchasing a Full Frame camera because I wanted better performance when shooting during dawn and dusk in Manhattan - especially when shadows and bright sunlight criss-crossed the image. So I took the plunge and purchased a Canon 6D and paired it with my 24-105mm f/4L lens. I won't bore anyone with the sordid details of the issues with B&H's price matching department, or with Canon's Quality Control in selling two cameras with significant sensor spot issues. What's important are the images. And they speak for themselves: