I am using the BS-Tandis template in the dreamslider module on one of our sites and the thumbnails are very blurry. I have checked everywhere to try and adjust this and can't seem to find it. The size within the style sheet is the same size as the thumbnails I am swapping them out with. When I use my firebug it says it uses a different size in the image handler file Image.ashx but there isn't anything in that file that shows this. It appears it's stretching the image from that size to the size I have it set at. Am I missing a setting somewhere? You can view an example of it here.

http://tbbm.ccfconsulting.com

It seems you have changed template from BS-Tandis to RS-Atosa.

If you think images are blurry, you may change image quality to "High" in image settings.

You may also use a different image for thumbnail.

BTW, if you want to show original image without transforming it, you can use "HTML" mode and add image in HTML editor.