Not sure but the spyder 3 works very well for me What kinds of folks should upgrade to the 4 for that super duper double shielded filters? I haven't opened the Spyder 3 Elite, yet. On average, accuracy and precision are improved by 26% and 19% respectively. The DataColor site says, 'The fourth-generation sensor uses double-shielded filters for longer life and better performance.
Unfortunately, I just noticed the Spyder 4 was released! The 4 Elite is $250, almost $80 more than the 3.
I just bought the Spyder 3 to go along with my Dell U2711.
