Awesome guys, thank you.
So what one of these should I buy :-
This
https://www.intershoot.co.uk/acatalo...-Iris-431.html
This
https://www.intershoot.co.uk/acatalo...is-510-28.html
Or this?
https://www.intershoot.co.uk/acatalo...is-566-33.html
Thanks.