I posted in another thread, but it wasn't a picture sample thread, so I hope I'm permitted to start one for the new Sigma. I haven't seen it nicknamed, but if the previous was Bugma, then this one should be Bugmos.
The OS is OK but not on a par with Canon's best IS, It is a little clunky in AF on the Canon 7D, but image quality is good.
IMG_4509 by C L Griffin/Advaitin, on Flickr
The very first image, I was surprised how easy it was to get good alignment with the grid in the 7D turned on. Here's a crop with a little contrast added to bring out the fabric of the window shade. Other than that, no processing.
IMAGE LINK: http://www.flickr.com/photos/clgriffin/6036431435/
IMG_4509b by C L Griffin/Advaitin, on Flickr
IMAGE LINK: http://www.flickr.com/photos/clgriffin/6036429401/
IMG_4519 by C L Griffin/Advaitin, on Flickr
IMAGE LINK: http://www.flickr.com/photos/clgriffin/6036981258/
IMG_4534a by C L Griffin/Advaitin, on Flickr
Beach sunflower with small bee.
One of the shots my wife hates me taking.
IMAGE LINK: http://www.flickr.com/photos/clgriffin/6036973766/
IMG_4551 by C L Griffin/Advaitin, on Flickr
And the mandatory crop showing the rather big blood vessel in her eye. No processing in any of this and all higher ISO.
IMAGE LINK: http://www.flickr.com/photos/clgriffin/6036416453/
IMG_4551b by C L Griffin/Advaitin, on Flickr