Revert "set default field of view to produce consistent image comparison"
as it does not solve the issue of comparing images with transparency
but introduces issue with regular image compare.

This reverts commit 6214da32d13c5aebb471b280021a5cbc960c0eef.
Merge pull request #8 from IndieGoGo/set_field_of_view

Revert "set default field of view to produce consistent image comparison...