Megapixels

Thank God for megapixels!  The 5D Mark IV has incredible density which allows you to crop down and still get a decent image.  Here are some perspectives and one highly cropped photo that I probably wouldn't call usable.

This is the original photo at 200mm.

I was able to get the 2x Extender on which brought the photo to 400mm.

This is the first crop where I changed the orientation.

This is cropped WAAAYYYY down.  Probably couldn't print it and the detail is not great at this level.  I'd call this one unusable.