Many of the advanced photographers most likely to use TTG often do not have their cameras set on full “Auto,” and many choose to use a standalone camera instead of a smartphone.

Accounting for all of the resulting possibilities is why this website is several hundred pages long.

For examples of considerations when not using “Auto” and/or not using a smartphone, see the “Tips for making more-advanced photos” page, or see the details in the dropdown tabs of the Trust Test.