Highlight and magnify an area

[K2 Surveyors]

Hi. I was wondering if it's possible to create this same effect in Affinity Photo?

[R C-R]

There are probably faster & better ways to do this but this is what I did:

1. Use the Ellipse Tool with the Shift key held down to place a circle over the part of the image you want to enlarge.
2. Set its stroke width & color as desired. If needed to make it easier to position it accurately, set its fill to none.
3. Once positioned, set the fill to a solid color & use the Selection Brush Tool with "Snap to Edges" & "All Layers" enabled to create a 'marching ants' selection of the fill.
4. Reset the fill to none & optionally lock the ellipse layer.
5. With the 'marching ants' selection still visible, select the background image layer & do a copy & paste. This will create a new layer containing just the selection.
6. Drag that layer to wherever you want it & use either the Transform panel or dragging on a corner handle of its selection box to enlarge it to the desired size.
7. With snapping enabled, use the Ellipse Tool with the Shift & Command keys held down to create a circle from the center of this layer, snapped to that layer's edges.
8. Set the ellipse to no fill & its stroke width & color as desired.
9. (Optional) For convenience, group this ellipse & the layer from step 5.
10. Use the Pen Tool in line mode to draw the lines connecting the two circles.

[carl123]

The Clone Tool can also be used to magnify part of an image, just change the scale setting to that required

Then use an Ellipse as a mask to constrain it to a perfect circle