olsonsview

Never, ever look directly at the sun with unfiltered eye, telescope, or camera. A couple simple devices I have used when viewing the sun with my solar telescope can be made by anyone having basic tools.
DIY tool #1 You need a scrap of flat wood larger than the face of the lens and any hood that you may be using the day of solar viewing. Pound a nail into the wood squarly from one side near the center of the wood piece. The nail should protrude maybe and inch or two from the wood while flush on the side you pounded it in from. Check to make sure the nail shaft is square to the wood piece with a square. Bend it a little if need be to get it square. Now take this finder you just made and use it to check if your scope/ camera rig is pointed at the sun. Lay the flat side onto the protected front of the rig you are using. Tweak the tripod head until you no longer see a shadow from the nail. You are now pointed directly at the sun, and you adjusted it while your back is to the sun so your eyes are safe! Of course the final step is to make sure all is ready by looking at the viewing screen at the sun-filtered image. But my pointer is a safe easy step one that keeps me from ever getting zapped by those hot rays. The next step is the way more important:
Tool #2 Make a solar shield with a piece of black cardboard say nominally 12 inches square? Cut a hole in the center for your telephoto lens to just pass through the cardboard and use some removable tape to hold this cardboard "solar block" in place on your camera rig. Even with a properly solar filtered lens filter on your camera, you will have way less eye fatigue if stray solar light never reaches your eyes while looking through the finder, or at the view screen! A finder screen will be way easier to see with this solar block in place! I cannot stress how much this will make a few hours of solar viewing way more fun!!! Your eyes will say "thank you" afterwards. Be safe always!
And yes there are endless tweaks and variations of this plan. Make whatever works for you, and clear skies on the eclipse day!