I'm trying to understand these techniques where you take E-6 transparency film and process it in C-41 chemistry and take C-41 negative film and process it in E-6 chemistry.

What sre the results like? I assume in the first, you get a negative and have to print from them and in the second you get a transparency or slide? Why would you do this?

Do you need to use filters or make any special camera adjustments when taking the pic before you can use these techniques? What are some ideal conditions to do this?

Are there examples on the web to see the results?

Thanks in advance.