How to set limits for rendering in Corona for C4D?
By default, in Corona there is no limit set for its progressive rendering and you can stop it at any time you want. However, there are currently three ways to limit your rendering:
1. Enable Time limit for rendering:
go to Render Settings > Corona > General Settings > Progressive rendering limits, set Time limit other than 0
2. Enable Pass limit for rendering:
go to Render Settings > Corona > General Settings > Progressive rendering limits, set Pass limit other than 0
3. Enable Noise level limit for rendering:
go to Render Settings > Corona > General Settings > Progressive rendering limits, set Noise level limit other than 0
Note: You can use any number of limits at a time, or each one of them separately. Rendering will be stopped as soon as any of the limits is reached.
See: How long should I render my image? , How many passes is enough?