Now, that adaptivity is enabled by default, we are supposed to use noise limit to get equal quality over range of images. Usually it works great, but i just ran into situation, where i can't get acceptable results using noise limit. Moreover, i can't achieve that neither with pass nor time limit when adaptivity is enabled.
Here's my situation: i want to render very simple animation, where bunch of objects gradually fills blank white background. At first few frames, where empty background predominates image space, noise limit (5%) is achieved very fast, and adaptivity has no chance to kick in. Obviously few objects that gets rendered at that time, becomes very noisy. At some point, where more objects fills in image space, adaptivity finally gets chance to do its job before noise limit is reached and at that point, jump in quality between two neighbour frames, is very drastical (see attached gif). I could try to fiddle with noise limit, but i can never acvieve fine balance between acceptable noise and acceptable render time in this particular situation. Pass and time limits won't work here too.
Eventually, i choose to turn adaptivity OFF and used pass limit to render animation with all frames being equall in quality. But if i'm not mistaken, Ondra wants to remove non adaptivity and/or pass limits at some time, so i think situations like these should be taken into consideration before removing old features.