Well, it depends what is meant by ‘good’.
Some of the world’s biggest films are made on the budget of $50,000. Or, at the other extreme, The Dark Knight Rises, was shot on a $4 million budget, and grossed $900 million worldwide. However, for the most part, film productions, the bulk of which were made on a budget of less than $10 million, are financed by financiers that set aside funds to pay for production themselves (often using loans that go unpaid). There is nothing inherently wrong with the two and the same.
The problem is when studio executives insist you have a minimum budget that must be met by the financiers at all cost, and will not release your film unless you do. This approach also limits the chances of new or creative ideas from getting seen, and is often viewed as unethical by many filmmakers.
The most obvious place to start is to ask your financiers to set aside the sum of money upfront at the beginning of production, with the idea that if you make the film with a better budget they will make it available to you if you so desire.
This is, however, an extremely dangerous approach (for instance, studios rarely set aside a budget themselves, but are forced to share with their financiers) and tends to create two things:
A conflict when multiple financiers want to work on the same film and they can’t all meet up on schedule
When the financing for one film becomes a competitive advantage over another, the idea that a one-film-at-a-time option won’t be taken off the table is an increasingly outdated misconception. Many films were made with two to four times the budget, with budgets ranging from $2 million to $100 million. Many were commercially successful. This kind of film requires multiple funds to succeed in the long run, and there are only so many places people will put their faith unless they are sure you are going to deliver.
You may also have to consider whether a studio will still release your film if there are no funds available to pay for it. In particular, studios that have multiple big films are often more likely to release them all at once, leading to a glut on movie screens.
A better approach, which you have to consider carefully, is to do an evaluation when the film’s budget is set aside. This should be done as early as possible, before any decision has to be made about any deal
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