scropper

After I did a sky replacement as per the Affinity tutorial I have ended up with a very fine (but noticeable) white line between the sky and land. How would I get rid of this .... have I gone wrong somewhere? New to Affinity Photo. Any help would be appreciated! Thanks.

Thank you Andrew. Great program!

Sorry if this question has already been asked..... I have been evaluating Affinity Photo (1.4) and would like to purchase, but I understand that version 1.5 will be available soon. If I go ahead and purchase the current version will the upgrade to 1.5 be provided free? Love the program! Very excited about the new features in 1.5!