So I had a bit of Christmas money and decided to upgrade from my original NEX-3 to the F3. I really like the built in flash as this opens up using the accessory port. I have a few general questions for anyone in the know. 1- I have an extra, non-Sony battery that works great for my NEX-3. Does the F3 use the same battery? 2- I am going to assume that due to the screen differences, that my pop-up screen cover for my NEX-3 is not going to fit. Is there one available for the F3? 3- The FDA-EV1S viewfinder; Who uses one, and what are your thoughts on this?