Q: Image Capture not Dowloading All my Photos

Hello LionelSimm,

Thanks for using Apple Support Communities.

I understand that when you're trying to import photos using Image Capture on your Mac, that only around 400 photos taken on your iPhone are being imported.  This indicates that the other photos on your iPhone were synced, rather than taken on your iPhone.  To remove synced photos please follow through the steps outlined below.

Delete synced photos

1. In iTunes, locate and click on your device.
2. Click Photos.
3. Choose "Selected albums" and deselect the albums or collections you want to delete.
   To delete all synced photos, deselect "Sync Photos from" and, when asked, click "Remove photos."
4. Click Apply.

Learn how to delete photos and video synced from iTunes when you can't access the originals.

Sync photos from your computer to your iOS device using iTunes

Cheers.