1. A method comprising: using a multi-field image sensor to generate a first image of a scene with a first operational mode of an image processing system; using the multi-field image sensor to generate a second image of the scene with a second different operational mode of the image processing system, the first image being of a first spatial resolution, the second image being of a second spatial resolution, and the first spatial resolution being higher than the second spatial resolution; wherein a first time duration in the first operational mode used to generate the first image of the scene overlaps with a second time duration in the second operational mode used to generate the second image of the scene; upsampling the second image to a stack frame that comprises a same number of pixels as the first image; combining the first image and the second image into an output image of the scene, the output image being of a higher dynamic range than either of the first image and the second image and of a spatial resolution higher than the second spatial resolution.