I am having almost this exact same issue, I have an old MacBook Pro that I have previously had El Capitan installed on. The hard drive has gone funny and now I need to re-install El Capitan. But the only other Mac I have is an iMac, and I cannot seem to legitimately find a way to download El Capitan. Did you have any luck with this? The old-fashioned way. Back in the old days, the only way to get massive quantities of photos off.

How To Transfer Photos From Iphone To Mac Os X El Capitan

By Alice Yang to HEIF, Photo Transfer | Last Updated on Dec 18, 2018

Can't import HEIC photos to my iMac. I use El Capitan and iPhone 7 running iOS 11. Photos captured on my iPhone 7 will not transfer into Photos on my iMac. While the thumbnail appears, an alert exclamation is all I get. It only started with iOS 11!

Transfer Photos From Iphone To Mac El Capitan

Want to download HEIC photos from iPhone to Mac and edit these HEIC files. The pictures taken with my iPhone 7 on iOS 11 are uploaded to my Mac in HEIC format. When I want to edit them on my Mac running OS X 10.11.6, I cannot even view these HEIC format images. -- from Apple community

Mac Os X El Capitan Update

HEIF, High Efficiency Image File Format, is the most efficient image format that is regarded as the successor to the JPEG format. Unfortunately, many users have stumbled upon big problems with syncing iPhone HEIC photos to Mac: exported HEIF(.heic) photos can't be viewed or open on Mac, or HEIF photos are converted into JPG format while some of you want to keep HEIF format. Follow our tutorial to transfer HEIC photos from iPhone (7/8/X) to MacBook Pro/Air/iMac without any issue of this kind.