Mid-Range-uses the middle pixel values from each image. Good for analyzing what has changed between each image. Range-indicates areas that change across the image stack. Suitable for exposure blending where the subject is darker than the background. Minimum-uses the minimum pixel values from each image. Can be used for creative exposure blending where the subject is lighter than the background. Maximum-uses the maximum pixel values from each image. Outlier-exposes pixel content that differs in each image: great for sequence composites. Suitable for object removal and noise reduction. Median-removes pixel content that is not consistent in each image. Good for long exposure simulation and noise reduction. Mean-averages pixel content across the stack of images. Median can be used for most blending operations such as object removal, exposure merging (exposure blending) and noise reduction. 
Creative effects: Simulate long exposure imagery and combine bright subjects (e.g., fireworks) for a composite effect.Ī choice of operators can be applied to your stack depending on what you want to achieve.Noise reduction: Blend together multiple shots of the same subject and average out the noise.
#Affinity photo astrophotography series
Object Removal: Use a series of images to blend out unwanted subject matter from a specific image in an image set.Exposure merging: Merging images of varying exposures.Visual differences between images in the series can then be removed, composited together, or used for creative effects. Non-destructive image stacks blend together a series of images based on the same scene or almost identical subject matter.
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