[poider (Peter)]

I am curious to know, if I have a 12 inch newt and a 6 inch newt and used the same eyepiece, would the view be the same size but just a lot clearer and more detailed, or does mirror size also affect magnification? I am aware that the bigger the mirror the more light gets in and that without a decent aperture you cannot get the detail, what has the bigger affect in magnification?
mirror diameter or mirror focal length or just eyepiece size??