Batch Render Different Than Single Frame Render

[annabanks]

Hi,

 

I've been having an issue where a frame looks different when rendered as part of an animation (i.e. when rendering frames 1-100), than when rendered as just a single frame.

 

I've attached an image of both versions. I've got a feeling it might have something to do with the camera motion blur, but I'm not sure what exactly the problem might be.

Obviously the single-frame version looks a lot better.

 

I'd appreciate any input,

Thanks a lot!