Final answer:
The sentence should be revised to include proper punctuation: a colon and commas.
Step-by-step explanation:
The correct revision of the punctuation in the sentence should be:
I need three things for photography club: a camera, a tripod, and photo editing software.
In this revised version, we have added a colon after 'club' to introduce the list of three items needed for the photography club. We also added commas between each item on the list for clarity.
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