Jim, I had to pause and look when your panoramic image came up full-screen. Simply a gorgeous rendition of a superlative landscape. The sky shows such a "true" shade of blue to me, and the whole image seems to have the SNAP of highly controlled contrast.
By the way, I am new here (registered a few minutes ago), and I'll post a little about myself soon. Need to get some sleep in a few minutes.
Let me suffice it to say that I've been "all over the place" with digital cams - Canon EOS, Nikon D200, and lately the Pentax K110D.
But I'm seeing a true and palpable difference in a lot of the Sigma images. They seem "cleaner" and "brighter" in color renditions. It's actually hard to put my mind to the exact specificity of what seems to make the images pop....so I just admire.
I was told by two friends "not to bother" with the Sigma as there is no real support for the cameras, and the mounts are finicky for adaptations to my manual focus lenses (mainly M42 screw mount). But now I've heard that the M42 lenses WILL mount, via an appropriate adapter, to the Sigma SA mounting bracket.
So, of course, NOW I'm thinking....and I'm not going to be surprised if I don't see an SD-9, SD-10, or SD-14 in my hands one of these days...especially if I keep looking at the wondrous image output I see here in this forum.
Laurence