Grotto Falls located in the Great Smoky Mountain National Park (GSMNP) in Gatlinburg, Tennessee. The hike is uphill most of the way but is an easy 2.6 mile roundtrip hike to the falls. When you arrive, you see a 25 foot tall waterfall that you can walk behind! Very neat. Be sure not to stand in the flow of water coming off the falls as rocks and other debris routinely roll over the falls with the water. Don't risk a head injury over it.
Sony a7ii with Sony 16-35/4
Lee Big Stopper
This falls is located on the Roaring Fork Motor Nature Trail in Gatlinburg, Tennessee. It is a one way loop and parking is sparse. Get there early or prepare to just park along the side of the road. The road seems more crowded than the trail.
This waterfall is well visited and easy to access from Gatlinburg so be prepared for a social hike as you will encounter many people coming, going, and at the falls. It will be so crowded when you arrive at the falls from everyone taking photos of their friends and families standing behind the falls. Consider taking a left down into the steam once the line backs up and find a place to park it.
I would encourage you to setup up against the small pool in front of the falls. Not in the pool but right up against the pool. You will understand it when you see it. Also prepare to setup down stream a little ways looking back. This makes for a nice photos as well. I would recommend a 16-21mm 35mm equivalent focal length. Further back you may want to be around the 35 -50mm focal length range. Shooting a photo to the left of the falls, to the left looking at the falls, would also make for a nice photo.
The space around the falls is crowded. People cycle in and out fairly quick so you won't have a problem finding a spot to drop your gear on the ground and have a nice lunch. I photographed the waterfall with my Sony a7ii and Sony 16-35/4 lens. I also used the Lee Filters 100mm Lee Big Stopper ND filter.
The low amount of water you will encounter at the base of the falls makes no visible mist. Unless it has recently rained, mist should not be a concern. Once you set up your tripod and camera. Be patient and don't allow anyone to rush you. Take many photos and several regular exposures so you can blend out the people when you get back home. Keep the camera low and experiment. You may have to watch kids swimming in the shallow pool of water at the base of the falls. They may splash around a bit but generally people are courteous to you shooting photos. Especially if you look like a pro-tog.
Waterall location: GPS Coordinates 35°40'26" N 83°26'58" W
Full frame recommended focal length: 18mm or wider
Do's: Pack a lunch (and pack out your trash) and make a nice stay at the falls. Be ready to take a really long exposure with normal photos. You will need to blend in at least one extra photo to get the people out. Everyone wants their photograph taken behind the falls. You will most likely need several photos to blend the people out.
Don'ts: Sunscreen isn't a concern as the hike is mostly shaded. You may or may not find use for your Enu. It is a crowded falls but downstream is less crowded and may provide some rest. Do not be in a hurry.