Reading
Four pieces on what a tap can and cannot do
Written for the moment before you commit a file, rather than after you have spent six taps finding out.
The bar under the seam has one line of room to justify each decision it makes. These four are the decisions where one line was not enough.
- 01
One spot, or the whole picture
Can you put a fingertip on the problem? The answer decides whether this page is the right one, and it takes half a minute to find out.
- 02
What one tap can fill
The fill copies from the ring around the disc. Sky reassembles perfectly, brickwork does not, and the tool checks which it is looking at before it writes.
- 03
Spots that come from the lens
Sensor dust, smeared glass and rain on a window each have a signature. Learn the three and you check three places instead of hunting a whole frame.
- 04
Portraits are a different job
A disc filled by averaging turns a nostril into a smear. Here is what that looks like, and why the detection step will never be added here.
Two of the four exist mainly to send people away: one to say that a global fault needs a whole-frame pass, one to say that work on a person needs a tool that finds the person. That is on purpose. A page that only ever argues for itself is not worth reading twice.