Mosaic Optoelectronics Inc. has a solution:
In their words:
Because this initial anti-aliasing filter is a spatial low-pass filter (or what’s sometimes called an Optical Low-Pass Filter or OLPF), a small amount of high-resolution image detail is attenuated by it.*** Therefore, in the middle segment of the posted video, we’ve applied a small amount of postproduction sharpening, to try to match the subjective sharpness of the original unfiltered material. For reference and comparison, we’ve also included a sample of the original, unsharpened, AA-filtered source material.
*** This is simply a side effect of the way that this type of filter works: A sharp lens can project image details onto the focal plane which are too fine to be resolved by the image sensor’s large pixels, and so create aliasing and moire; the filter removes these components from the optical image and prevents the artifacts.
No word on price or shipping at this point.