There will be always discussions between people about the advantages or disadvantages of Electronic Viewfinder against Optical Viewfinders. In a recent short article Luminous Landscape admin describes “Why I Hate Electronic Viewfinders“. He says: “The reason why is that they are at best tiny TV sets, and as such have very low contrast ratios compared to the ability of the naked eye or a good optical or large DSLR viewfinder. In bright situations, where there is also deep shade, it can make visibility into the shadows when shooting highly compromised.”
It’s ture that current Sony EVF can’t give you the clarity of an Optical Viewfinder but I think that in time EVF will get very close to OVF. Plus you don’t have to forget that EVF gives you some inherent features that are simply non available on OVF. So let’s wait and see what the new generation EVF from Sony will be. 3+ Million dots for the NEX-7n sounds like a good improvement!