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All replies
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Helpful answers
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May 26, 2016 12:56 AM in response to Stevo987by léonie,Are the thumbnails pixelated or the photos, when you enlarge them?
AAre you using iCloud PhotoLibrary and optimize storage?
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May 26, 2016 11:01 PM in response to léonieby Stevo987,Hi,
The thumbnails appear to be OK even when magnified. However, when I click on the thumbnail to open the photo the result I get is pixelated and when you enlarge that image its very noticeable.
This must be something that has happened some time after I imported them as I am sure I would have noticed this at the time I did the import.
I am not using iCloud photo library or optimised storage. These files are in the photos library on my hard disk. They are however all backed up on another iMac.
Any ideas?
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May 26, 2016 11:33 PM in response to Stevo987by léonie,This must be something that has happened some time after I imported them as I am sure I would have noticed this at the time I did the import.
You will only notice it, if you enlarge the photos, since the browser will only show the thumbnails.
What is the pixel size of the photos when you export one of the pixelated photos with "File > Export > Export original image"? Does the exported original have the full resolution and pixel size when you open it in Preview and check it with "Tools > Show Inspector"?
This will tell you, if the original photos are still the originals you imported and have not been replaced by smaller versions.
Have you been using applications to reduce the storage of your Photos Library? Some apps, that modify the library directly will replace the originals by the previews of the edited versions, for example CleanMyMac. This can decrease the quality of the originals considerably.
You can also downgrade your photos by transferring photos between libraries by dragging from the browser. Then you only export the previews and not the high quality originals
They are however all backed up on another iMac.
What kind of backup do you have? Have you checked that backup, if the older photos are fine?
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May 28, 2016 1:24 AM in response to léonieby Stevo987,Hi Leonie
Thanks for your advice.
I tried exporting a pixelated original to my desktop but got the message 'The file couldn't be opened because there is no such file' !! There were a few images that looked OK but I got the same message on those as well.
I then tried exporting some of the the photos post 31st December 2013 which was the cut off date when I did the iPhoto migration, the export process went OK and the the image looked fine and inspector revealed image intact.
I have used cleanmymac which has got a new feature 'Photo junk' I am thinking this is the culprit.
I still have the iPhoto library on my current iMac which I guess has all the pre-migration stuff (all 137.GB), I have my current iMac backed up on to Time capsule and a portable drive as well. I also have the old Imac with the original iPhoto library. So quite a few backups!
I have checked the backups on the old iMac and they are all fine. I just started to have a look at the iPhoto library on my current iMac and it asked me if I wanted to switch libraries, it started preparing the file but I quit at that point as I wasn't sure whether that was a safe thing to do and might cause more problems!
Grateful for advice on next step.
Regards
Stevo
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May 28, 2016 3:09 AM in response to Stevo987by léonie,I tried exporting a pixelated original to my desktop but got the message 'The file couldn't be opened because there is no such file' !! There were a few images that looked OK but I got the same message on those as well.
That is exactly what CleanMyMac may be causing. It considers the high resolution original images to be "Photo Junk" and replaces them by the previews of the edited versions. And if this linking goes wrong, you can no longer edit or export the photos.
I would copy one of your backed up original iPhoto Libraries over and open this copy in Photos to migrate it again. Then check , if all photos are working in this restored library and delete the corrupted versions from your current library.
You can simply keep switching between libraries by clicking the libraries you want to open in Photos. Or use Power Photos to merge the old, restored library with your current library.
To merge libraries you need the full, paid version of PowerPhotos. For browsing the free trial will suffice.
You can download PowerPhotos here:
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May 28, 2016 4:57 AM in response to Stevo987by Stevo987,Leonie
Thanks I'll try that and let you know how I get on.
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May 28, 2016 7:25 AM in response to Stevo987by LarryHN,And IMHO the most critical next step is to get rid of Clean My Mac - it has destroyed countless libraries and is un-needed at best and dangerous at worst (it has destroyed systems to the point that they can not be booted up) - it, like MacKeeper, is malwear being sold with heavy marketing to unsuspecting users -- Do not install MacKeeper
LN
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May 29, 2016 1:08 AM in response to Old Toadby Stevo987,The 150Mb referred to memory usage, (as revealed by the Clean my Mac activity monitor)
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May 29, 2016 12:01 PM in response to Stevo987by Stevo987,Hi Leonie, OT & HN
Many thanks everyone for taking the time to help me out.
Its taken all day (As I have 168GB in that file) but I have got all the photos back in good order on my new iMac. The process was relatively straightforward:
1. I have various backups of my old iPhotos, so I grabbed the latest on my WD drive , renamed it 'Iphoto library backup' so I could tell which one it was and copied it into my pictures folder, (with two finder windows open drag an dropping from one to the other).
2. First time I tried to open the new iPhoto file in 'Photos' I got the message that the version was 'too old'! and had to download a iPhoto Upgrader utility from the app store. So ran that on the file and then was able to migrate that old iPhoto library into photos.
3. Checked that all image files had migrated successfully and they have.
4. I am using Adobe Elements and Lightroom which offer superior editing functions, but with the number of photos I thought it would be a good idea to go through and tidy up the folders first using photos. I also have a lot of 'snaps' on iPhone etc which don't have the necessary resolution.
Next step would be to merge the two photo libraries, but might opt for importing into Adobe Elements.
I am going to be ditching the CleanmyMac photo junk from now on, if that was the cause of all this unnecessary hassle
Thanks
Regards
Stevo.