I use a Nikon SLR camera and lenses, a few Sigma ones, and Hoya & Singh-Ray filters.
I'm using this site to post my photos for the enjoyment of others. My goal is to upload more of my better or more 'professional' photos, with a desire to learn more about photography on a daily basis. Most of my photos are from trips to national parks and monuments around the US and Canada. Others are from walks around the Austin area where I live. I have another site on Picasa for general photos, like in a photo album of a trip or from a collection or set of photos.
Any comments or constructive criticisms are welcome. If you would like to download or purchase prints of any of my images, send an email or send me a hi on Twitter: twitter.com/#!/thorsenmark.