Which Way To Hold Your iPhone Camera
Introduction
Do you pay attention to which way to hold your iPhone when using the camera on your phone? When taking pictures or shooting video in landscape mode, it does make a difference which way round you hold your iPhone even though the phone superficially caters nicely for any orientation and will nicely display the pictures the correct way in your gallery. This applies more to video than photos actually because they are so simple to rotate but it's still important as you'll see below in 'why it matters'.
Simple Answer
It depends whether you're using the main front lens (the higher resolution lens) or the lower resolution 'selfie' camera. If you're shooting with the main lens, make sure the phone is held with the volume buttons at the bottom. Yes, it sounds stupid and isn't the natural way to do it because the buttons act as a shutter button and many people use them for taking pictures rather than tapping the screen.
The picture below shows how it would look to the people you're filming.
If you're shooting a video or taking a photograph with the lens above the screen, make sure the volume / shutter buttons are at the top. The other way around. A bit silly. See the picture below. I suppose this should have the camera app up to make more sense but I could find a picture of that.
Why It Matters
If you only ever view media on your iPhone, it doesn't.
If you ever send it someone on WhatsApp or FaceBook messenger etc. or even send it to you laptop or PC, you may find unpredictable results and it becomes important. The iPhone will put a flag with the file telling another device which way to display the video.
The problem is, if you shoot a video and then immediately send it via WhatsApp to someone on an Android device, it will be very annoyingly upside down for them if you haven't shot it the right way. It's funny the first time but just irritating after that.
That's why it matters. Not all devices can understand or maybe just ignore this flag so you need to get it the right way when you shoot so people see exactly what you need to see.Let me know if you have any thoughts or questions.