It is photoshopped.
Another Answer
NB: Photoshop(R) is a brand name, a trade name, a Registered Trademark for a software product. Turning nouns like this into verbs could be equated with lazy writing.
One could write:
"The image had been worked over by Photoshop(R)."
That would give you the past tense version you want, and a more proper use of the word Photoshop(R).
It should be noted that Adobe do not accept its usage as a verb as stated in their guidelines. Thus, the above answer should be taken into account for any academic writing you are undertaking.
See the related links for more information.
Photoshoot is a noun and so it doesn't have a past tense.
The past tense of photograph is photographed.
Photo is a noun. Nouns don't have tenses.
Photoshot
the past tense of am is was and the past tense of has is had
The past tense of get is got. For isn't a verb and so doesn't have a past tense. The past tense of has is had. Had is already the past tense. The past tense of have is had.
Was and were are both the past tense of be. The present tense is: I am he is you are they are The past tense is: I was he was you were they were
The past tense of "will" is "would". The past tense of "to be" is "was" or "were".
Wrote is past tense. It is the past tense of write.Wrote is already a past tense.
The past tense of "finish" is "finished". The past tense of "be" is "was" (singular) or "were" (plural).
The past tense is schooled. The past continuous tense is 'was/were schooling'.
The three kinds of past tense are simple past, past continuous, and past perfect. Simple past is used to describe a completed action at a specific time, past continuous describes an action that was ongoing in the past, and past perfect is used to show that one action in the past happened before another.
Existed is the past tense. The past perfect tense is had existed.
The past tense of "meet" is "met." For example: "I met my friend for lunch yesterday."
Simple past tense. Past perfect tense. Past perfect continuous tense. Past continuous tense.
Worried is past tense. The present tense is worry.