D_Engle

Although Affinity Photo is my primary editor, I use Apple Photo to polish away any remaining problems. Affinity may be too difficult for me to straighten museum painting photos; however, Apple Photo does the trick, but is not always near perfect, but it's good enough for me. The tools are found pressing Edit -> Crop and then you will see the slider bars for Straighten, Verticle and Horizontal. Hope this helps, David