There are several upgrades you can get to Zero One that aid you in the ability to capture Photos. The Upgrades are as follows:

Picture Name Effect Location
Pokémon Food Attracts Pokémon, gives them Happy Poses. Can be used to knock them over (Press A) Obtain 14,000 Points in your Pokémon Record
Pester Ball Used to aggrivate Pokémon (Press B) Obtain 75,000 Points in your Pokémon Record
PokéFlute Use to make Pokémon Dance, Attack and Awaken Sleeping Pokémon (Press C Down) Obtain 175,000 Points in your Pokémon Record
Dash Engine Hold the R button down to speed up Show Oak first Pokémon Sign Photo

 
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