http://dark.z5lcip4dafatwwa6hvyibizpzwycvwp67cjga3hzjhxhwvuyaqavxnid.onion/tech/762
More often the biggest problem is ringing at sharp edges in the image. You can see a lot of this in the second image of P1212 , for example in the sky right at the edge of the yellow structure, and really all over the image.