04/28/2026
In preparation for editing my dahlia photos. The “High Pass” function in Photoshop looks promising. It can be used to sharpen the focal point of a photo, which might be useful when trying to highlight a particular flower and let the rest of the image stay blurred.
High Pass is a filter. Make sure you chose Filter/Other/High Pass (High Pass is also directly under Filter, seems to work differently. ?)
In the little window that appears, move image around until the part you want to be sharp is displayed. After setting the Radius to a “good” value, then change “Normal” to “Overlay”. It will not be sharper.
In Photoshop, the tutorial on how to do all this is un Hands-on/Beginners./Retouch Photos.