Your task is to compare the visual quality of two images that may be affected by fast-fading degradation, using the evaluation criteria defined in these instructions and examples (updated January 10, 2013). This task can be completed in around 60 seconds.
IMPORTANT: do NOT work on this HIT without carefully reading the instructions first, even if you have worked on our HITs before, because instructions often change from one day to the other.
| Score | Quality |
| 1 | Left is better. |
| -1 | Right is better. |
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