Non-destructive image stacks blend together a series of images based on the same scene or almost identical subject matter. Visual differences between images in the series can then be removed, composited together, or used for creative effects. Stacking of raw images is possible.
About image stacks
The Stacking dialog with files added to the Sources list.
Use image stacks for:
Exposure merging: Merging images of varying exposures.
Object Removal: Use a series of images to blend out unwanted subject matter from a specific image in an image set.
Noise reduction: Blend together multiple shots of the same subject and average out the noise.
Creative effects: Simulate long exposure imagery and combine bright subjects (e.g., fireworks) for a composite effect.
About stack modes
A choice of modes can be applied to your stack depending on what you want to achieve. Median can be used for most blending operations such as object removal, exposure merging (exposure blending) and noise reduction.
To create a stack:
From Affinity Photo 2's Home screen, tap the New icon.
Choose New Stack.
From the dialog, tap either the Cloud or Photos icon to locate your images (raw images can be used).
(Optional) If you are using Photos to import images, tap Select at the top right to enable multiple selections. This means you can quickly select multiple images and add them all at once.
Check Align source images if your images were shot handheld, or if there is a slight variance in positioning between images.
Toggle Perspective alignment to align images using perspective operations instead of rotation, translation and scaling. Perspective alignment may result in slightly more edge detail.
Toggle Live alignment to allow the above alignment to be made non-destructively (this may affect performance depending on size and number of images to be stacked).
Choose OK.
On the Layers panel, select the Mean or MidRange stack mode from Layer Options. Results between each mode may vary: try both and see which you prefer.
Your images are blended and presented in a Live Stack Group in the Layers panel. You can manually align layers if auto-alignment isn't 100% accurate.
To change stack mode:
On the Layers panel, you can find the stack mode on the layer properties dialog. The default mode is Median.
From the pop-up menu, select a stack mode suited to the type of photos you are stacking (see above). The icon will change depending on the mode selected.
To create a stack:
On the