4.20. Apply Lens

4.20. Apply Lens
	4. Filtres Distorsions

Figura 17.89. The same image, before and after applying lens effect.

Original image

Filter “Apply lens” applied

After applying this filter, a part of the active layer is rendered as through a spherical lens.

You can find this filter in the image window menu through Filters → Distorts → Apply Lens…

Figura 17.90. “Apply Lens” filter options

Previsualitza: If checked, parameter setting results are interactively displayed in preview. Scroll bars allow you to move around the image.
Keep original surroundings: The lens seems to be put on the active layer.
Set surroundings to background color: The part of the active layer outside the lens will have the background color selected in the toolbox.
Make surroundings transparent: The part of the active layer outside the lens will be transparent. This option exists only if the active layer has an alpha channel.
Lens refraction index: Lens will be more or less convergent (1-100).