Christ Pantocrator, inside the dome of the church

This is a non-progressive JPEG, I used a circular selection in GIMP to crop it to the circle, fine tuning the positioning at 200%. No color correction has been done. I tried progressive, but it doesn't display on iPhone. This was saved as JPEG in GIMP with 58% quality, I tried lots of values with preview, and this didn't seem to lose visible quality but is 40% smaller that the previous version.

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