Your resulting seeds (F1) will ALL be “Fast Photos” or Photos carrying the auto gene. NONE of those will be autos.
Take those F1 seeds, find a male / female, and make seeds, and you will get 25% Photo, 50% Photo w/ auto gene, and 25% autos…
Or take an F1 female, pollenate with known auto pollen, and get 50% photo carrying the auto gene, and 50% autos from the resulting seeds.
Pollinating an Auto with a photo will be the same as making F1’s at the beginning of my post, they will all be Photoperiod (since photo is dominant gene), carrying the auto gene but not presenting as autos.
Look up Punnet Squares to calculate percentages of the progeny.