Film · 1987 · Films · 1980s
Opera
Scored from 124 calibrated IMDb reviewers, each re-centered on their own rating baseline before the title is ranked. Cohort: Films · 1980s (3,141 peers).
Summary
A young soprano takes over the lead role in a production of Verdi's Macbeth at a Parma opera house after the diva is injured. A masked killer becomes obsessed with her, binding her and forcing her to watch as he murders those around her by taping needles beneath her eyes so she cannot look away.
Opera (1987) is a film IMDb files under the crime, horror and mystery genres.
Rotten Tomatoes carries a separate audience for the same title, 422 of whom clear the calibration test. The calibrated figure is built from 124 reviewers whose rating history varies enough to place their own average. A broader pool of 124 reviewers with two or more reviews feeds the raw-average track instead. Its in-cohort standing is measured against the other 3,140 1980s films, not against the whole corpus.
How the score was built
We compare the reviewers of this title against every other title those same people reviewed. Each review is scored relative to the reviewer's own baseline — a 7/10 from a hard grader sits well above their average, while a 7/10 from a generous grader sits below theirs. Every reviewer then counts the same, so the result is a calibrated consensus rather than a raw average.
- Global percentile
- Where Opera lands against every title we rank.
- In-cohort percentile
- The same comparison narrowed to its cohort — titles of the same format released in the same decade. A 1970s film is judged against 1970s films, not against last year's streaming series. Ranked against Films · 1980s (3,141 titles).
- AI-adjusted percentile
- The same reviewer-normalized score, corrected for how much confidence the sample supports: thin samples are pulled toward the corpus average. Each title keeps the share n / (n + 53) of its measured distance from the average, where n is its calibrated-reviewer count, and the result is ranked on the same scale as the global percentile.53 is the median sample size across everything we rank. Here n is 124.
Cohort: Films · 1980s
