The one annoying thing I find with the D3300, and I guess applies to all DSLRs ?
When taking videos, because the mirror has flipped, you can’t see through the viewfinder. Unless you have a camera
with an electronic viewfinder, as with bridge cameras.

It’s not easy to smoothly track a moving object in bright sunlight, using the back screen. I was thinking of making up a crude viewfinder which would clip into the flash hot shoe. The only problem then would be, zooming in and out. I shall experiment.

I cant justify buying a camcorder.