![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEh8AEXHIOK2iCMuWbBFpHpOML5b9sUQW_yrZgmzg3B_alb-0Nj-YQWkcM5vwEEaPagRovzD24FEGGLncNW93ZhnNrbs4xMweHJyQaIf6vrKGlJ8AjIut87iFgGqNS4RogL3_pCUY8JMvI8/s320/blog.jpg)
This was the first time I used the Tokina 10-17 fisheye lens which proved to be an excellent choice on a crop factor body like the Canon 40D. I also wanted to test if the +2 diopter lens makes any difference on the Canon 10-22 (better corner sharpness?) but that remains to be answered.