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Forum Discussion
does Dropbox compressed photo files???
I'm sending full resolution photo files to clients instead of burning them on a disc, but I want to make sure they are the full resolution. I had a client that had pictures made at Walgreens, and the...
I uploaded a 107.5MB TIFF file to Dropbox using a desktop browser, then downloaded the file. I then compared the file in my download folder to the source file.
Both were exact matches down to the byte: 107,525,5436 bytes.
I then checked for JPG. Also an exact match 9,177,764 bytes.
Then I checked CR2 files (Cannon's proprietary file extension)
Drumroll...both files were 23,921,835 bytes.
If you are using some mobile app to upload your photos...switch to desktop if you care about such things, but blame the right party.
Last I checked, I do not work for Dropbox, nor do I own any stock. If you call someone a liar, you better be able to back it up at least as well as dropbox backs up your files.
The work flow I have as testing was:
- Take image and on phone
- Transfer image to computer / cloud service using different methods
- Check image for changes using md5 or sha1 checksums
Photos can be the same resolution but a different quality, note the reduction in size in the Dropbox image from 2.8MB to 1.79MB with a loss of quality.
My issue is one of honesty as I explained in the post about this. I understand and accept that cloud services need to compress files but they also need to be clear about this.
