how to square up a 4-sided area

[clivewa]

I often photograph paintings and while the images are close to square they are never perfectly square.  What would be the best way to square them up in Affinity Photo 2?

[Alfred]

Welcome to the Serif Affinity Forums, @clivewa.

Using the Rectangle Tool, draw a square of the desired size on top of the image. In the Layer’s panel, drag the rectangle layer and drop it onto the thumbnail of the image layer.

[lepr]

44 minutes ago, clivewa said:

I often photograph paintings and while the images are close to square they are never perfectly square.  What would be the best way to square them up in Affinity Photo 2?

Try non-destructive Perspective Live Filter or the destructive Perspective Tool.

[clivewa]

Many thanks Alfred, but I should have explained my requirements a little more thoroughly.  If I understand your recommendation correctly, it would involve clipping a long, thin wedge of the image.  This is not what I'm after.  Due to the nature of the images (frequently very geometric, with lines running close to the edge of the painting) no clipping is permissible.  The image needs a perspective correction.

[Alfred]

15 minutes ago, clivewa said:

If I understand your recommendation correctly, it would involve clipping a long, thin wedge of the image.

I wrote about masking the image with a square shape. I didn’t say anything about long, thin wedges!

16 minutes ago, clivewa said:

The image needs a perspective correction.

I think you have your answer:

45 minutes ago, ,,, said:

Try non-destructive Perspective Live Filter or the destructive Perspective Tool.

 

[clivewa]

Hello again Alfred.  I'm a total beginner with Affinity so please forgive my misunderstandings. However, I think that a combination of perspective correction followed by a crop will do what I want.  Thanks for your advice.

[lepr]

@Alfred I must be on his ignore list already 😁