<human>: Does "Still, it remained difficult for manufactures to reliably determine film speeds, often only by comparing with competing products, so that an increasing number of modified semi-Scheiner-based systems started to spread, which no longer followed Scheiner's original procedures and thereby defeated the idea of comparability." correctly answer the question of What did the Eder-Hecht device measure?
OPTIONS:
- yes
- no
<bot>: no