1) The following RAW photo files from the following camera models are recognized by Amazon Drive and Amazon Photos as a photo file; however, file preview is not possible at this time. This is not a definitive list.
2) Tip: If your RAW photo file isn't recognized as a photo, try converting the file to a DNG (Adobe Digital Negative)
My problem was this : Photos not rendering properly.
The reason for this is Amazon Photos are supporting the storage of raw files, but not the preview or display of them from the App or the Browser at this point :
So the online viewer is recognising my files, as Photos - As they should, and these files are being shown, and are not being counted towards my quota of storage.
There is no support for previewing thumbnails or showing them from the brower yet.
The reason the help article lists converting the files to .DNG - as there are other exotic raw formats from different vendors that amazon may class as 'Data' not photos - and would not count towards your 'Unlimited' storage.
After talking to the various reps, I wanted to update this thread with the following information and workarounds.
1) Because we as prime members have "Unlimited" photo storage, I will just upload 2 copies then. 1 in .DNG for Raw data, and a 2nd in JPG.
This means that it is possible to keep a lossless copy for archive, and a lossy one for use on things like the Photos App, and the Kindle Fire.
2) Is there any plan to change this in the future ? "Yes Alex. Our team is working on improving the cloud services. Soon you will see change in the file types Amazon cloud storage supports. Our team is working consistently on improving the services" 3)Is there a timeline on the planned support of the raw files for preview ? I'm afraid, We did not received any update on the launch of it as of now. In this case I will not be able to confirm the timeline
I really hope this is a useful post for someone - Because its taken me a while to collate all this info.
Im still really thankful to Amazon for giving us a place to backup photos offsite included in the cost of Prime.