Raymond

A is RAW, B is Video Still. My reasoning: text in the focus point region has red fringing on image B: whereas image A is clean: This is also evident elsewhere in the image. Since there was a 4:2:2 codec in the video pipeline (Prores LT), I would suggest the chroma sub-sampling could be one of the main culprits for those artefacts. Sorry if I cheated by zooming in and pixel-peeping the images... I only have an iPhone and an SXGA laptop. Cool challenge - enjoyed it. ..Ray