The flip screen, usually called rotating screen is a liability. Even tilting screens are more fragile than a fixed one, so your camera is tougher for the matter. This constraints flexibility of composition but it is usually easier to keep things level when using the viewfinder, even if you have to crouch. There are a few things you can do to help with that:
- Get a low tripod or GorillapdGorillapod to help set the camera low. This will make it easier for you to get into position since you don't have to hold the camera too.
- Use Live-View since most rear LCDs have now a wide angle of view, you can still see what is in the frame from above and to the side.
- Buy a secondary monitor. This usually connect via the HDMI port and show you Live-View on a much larger screen which is positioned on an articulated arm.
- Use WiFi isif your camera has it. Many modern cameras have WiFi feature which will stream the Live-View into a smartphone or tablet. This is infinitely more flexible than a rotating or tilting screen yet does not make your camera more fragile for the matter. I hope that as this feature becomes more common, we will finally see an end to movable displays.
- The final option is to use some type of tethering software. They can sometimes show the preview or at least image review but you must have a computer connected to your camera. Don'tI don't think a tablet or smartphone version has been created yet.