I have a youtube channel and create a lot of technical videos in front of a large Dell monitor which I use as a whiteboard. I used to use my iPhone but switched to Nikon Z50 with a shotgun microphone to get a better quality video (which it is :-)).
As I moved the camera close to me and the whiteboard I can’t get myself and the whiteboard in focus just right.
I did research and I understand this is the depth of field. I already struggled with getting the ISO right since I’m standing in front of a big white screen and found around 1100 is about right which I manage to lock using the AE-L button :-)
I had set the focus to manual as the autofocus didn’t work well in front of the monitor. If I switch the camera to M I can set the ISO and aperture. I understand as I increase the aperture I need to increase ISO as less light gets in.
My question is how I know how to manually focus and what the right f stop is. The camera is about 1 meter from the screen. An example of a video is at https://youtu.be/LWKkva4ksdg where you can see I’m slightly out of focus.
I have 4 lights on me to try and offset the problem of the big white screen as by default it makes me super dark :-) I guess a second question is do I have to set the exposure time and what would I do?
Any pointers would be appreciated.