User talk:24.227.222.61

This definition of contrast is not what is written in [10] Peli, 1990, equation 4a. Please revise; it was OK before. 188.103.28.172 (talk) 17:19, 21 October 2020 (UTC)

December 2020
Please stop your disruptive editing. If you continue to attempt to make unconstructive edits to Wikipedia and trigger the edit filter, you may be blocked from editing. CLCStudent (talk) 18:56, 5 December 2020 (UTC)