there are six camera windows, one on each side,,,,and the four along the bottom
that model pic in the post above shows 3 windows along the bottom, and a spot for the clear prism that goes there,,,,under that prism should be a clear area
on the "round" nose RF-4C, E and last 3 B,,,,,there was a wider, curved, actual window across the same area as that prism
the Hasegawa kits show those four areas on the bottom piece, marked out with a raised line around each one of them
if needed, I can "silver Sharpie" with black around the outside one of each type of those clear parts, for modeler's reference on here
ps,,,,,,as an aside to other "blue box" collectors,,,,,,Ka series have art instead of photos, that is true,,,,but, they also give more and wider options in each kit than the photograph boxings,,,,,,,,,Ka9 has one scheme on the decal sheet that I have refused to use,,,,,the bright Red "photo strip" marked aircraft,,,,,I would build it, but even though I have photos, it stills looks too much like a "made up" markings scheme, lol