Compensation point is the value of a factor where there is

The compensation point is the value of a factor where there is photosynthesis equal to the rate of respiration.
The light compensation point (I_c) is the light intensity on the light curve where the rate of photosynthesis exactly matches the rate of cellular respiration.
At this point, the uptake of CO₂ through photosynthetic pathways is equal to the respiratory release of carbon dioxide, and the uptake of O₂ by respiration is equal to the photosynthetic release of oxygen.