Fantasea Bigeye FOV Recovery on Fantasea housing for G7X

[Hector1959]

As a dome, the Fantasea Bigeye underwater should recover the in-air FOV. That seems to be clear.
But in this page:
Canon G7X Wet Lens Tests
while exactly stating that it only reverses the magnifying effects of refraction underwater there are two sample photos which seems to have a wider recovery when compared.
Here they are:
Fantasea G7X with no lens.

Fantasea G7X with Bigeye Lens

I did count the tiles of the pool and found that there are about 70% plus which IMO is more than recover the In-air FOV.

May be there is some "tecnicality" that I dont understand. What am I missing?

For full read of article with the comparison:
Canon G7X Wet Lens Tests


Regards

 

[DiverDownD3]

Thanks for posting this. Been thinking about getting the BigEye for my Fantasea housing