Use a higher-resolution image
Increase the camera’s focus accuracy
Stabilize the camera with a tripod
Use a faster shutter speed
Improve lighting
Clean the camera lens
Avoid digital zoom
Hold the camera steady
Use image stabilization
Reduce motion in the subject
Use manual focus when needed
Export or save at higher quality
Avoid excessive compression
Sharpen the image slightly in editing
Use the correct lens for the distance
Keep the subject within focus range