Video: How to focus stack
If you've ever wondered how some landscape photographers have a seemingly super-human ability to capture sharp images throughout their frame, then you may have just stumbled on one of landscape photography's coolest techniques - focus stacking.
Coming from YouTuber Mark Denney, this great video will show you how to use focus stacking in Photoshop to create the sharpest possible images.
Focus stacking involves taking multiple images with the same framing at different focal distances. By stacking, or combining the resulting images, it allows a photographer to create an image with a larger depth of field and better sharpness throughout. It's especially useful when used to overcome lens abberations like diffraction, and can give better results than relying on hyperfocal distance.
You can see more of Mark Denney's useful video tutorials on his YouTube channel.