My tool

This is my calculator... a great tool that I don't know how to take benefit of it.

 

Some classmates uses it to copy in the exams. I tried but it didn't work well and I got tired of losing time trying to know how instead of studying.

 

I'm also trying high values of ISOs with the 40D. I think it has been the first time I shot with a 800 ISO.

 

Taken: Montornes del Valles 05-06-08

Done