2 and 3 are the only exponents that have special terms in English.
2 squared is 4.
4 is the square of 2.
2 is the square root of 4.
2 cubed is 8.
8 is the cube of 2.
2 is the cube root of 8.
For other exponents, we read the operation as "X (raised) to the N'th power" or "X (raised) to the power of N." The word "raised" is optional.
First, you make two grammatical errors:
The past of overcome is overcame. The past participle (used to form the present perfect) is overcome. (In this it is like come and become, but not many other verbs).
Secondly, with a third person singular subject ("hard work") have takes the form has.
So grammatical forms of your sentences are:
Hard work ...
I feel it would be more likely heard as "choice of camera" than "choice of a camera".
A top tier choice for a camera.
This sounds more general, and focuses more on the particular camera as a great choice, highlighting its top tier qualities.
The word "choice" could easily be replaced by the word "option" or "candidate" and still sound reasonably ...
Abercrombie. It's not exactly a widely used word that means 'newbie' or 'fresher' generally. The character is given that nickname because he is like the young men who the clothing company Abercrombie & Fitch uses as models and store employees.
Why does Sin call Roy “Abercombie”?
It isn't constructed quite correctly and contains some words/phrases which are not natural.
Even though "shooting" is the correct verb for creating video footage, we tend not to say people have been "shot", or are "being shot", because it sounds like they've been shot with a gun. Better to move that verb to make it clear that it is a video shoot.