Using the Sigma 8mm 3.5 on a Canon 60d
I'm freaking out because I purchased the Sigma 8mm ex dg fisheye for my Canon 60d. I put the lens on and it is not a true circular fisheye due to the fact that the Canon 60d is not a full frame camera. Will I still be able to use it with Panoweaver if it is not circular all the way around.
Easypano recommended this lens for the camera here: http://www.easypano.com/canon-eos60d.html I hope I did not make a $900 mistake as a result.
Thank you in advance for your help or suggestions