Computers are supposed to be good at counting, right? So why do the numbers sometimes not add up for photos? Macworld reader Jeffrey asks a question that’s similar to ones asked by others:
The photo count between my Mac and my iPhone are not the same. I use iTunes syncing along with My Photo Stream to keep the devices identical. Something has gone amiss. I don’t have any idea how to troubleshoot the image counts since iTunes is supposed to be syncing the images. How might I determine if a problem really exists, and if so, how do I fix it?
There are long-running discussions on Apple’s forums about iTunes syncing not matching up numbers in iPhoto and Photos for macOS and iOS devices. These seem to stem from deleted photos where corresponding thumbnails remain in the library databases. If that’s the case, you can rebuild an iPhoto library with these instructions and repair a Photos library by following these directions.