I am looking at F3 and F3 HP. Is the difference between the two entirely contained to a prism? In other words, simply swapping a regular "eye level" prism for HP prism my regular F3 will become F3 HP?
I googled but couldn't find the definitive answer to this question.
My 2nd question is just my curiosity: why are F3 focusing screens so thick and heavy vs FM3a/FE2 thin & simple screens? Visually I can't tell much of a difference, they're both great.
Thanks.
I googled but couldn't find the definitive answer to this question.
My 2nd question is just my curiosity: why are F3 focusing screens so thick and heavy vs FM3a/FE2 thin & simple screens? Visually I can't tell much of a difference, they're both great.
Thanks.




