It might just be me, but I think even with an iPad mini (which I use), it would be very difficult in even normal light to see the screen and detail enough to tell much. For me, I'm just amazed at how much detail I can see using the
DJI goggles. I use the focus fixers too. The only way I see more detail is to view after the fact on my 55" 4K TV. I just love the detail in any lighting condition with the
goggles. I have also used a towel over my head which covered my controller and iPad too. That's not a bad cheap solution but not nearly as good a the
goggles.