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Asked by alexcarrx to Paul on 10 Mar 2015.
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Paul Booker answered on 10 Mar 2015:
This is a really good question and quite hard to answer! Photos are saved, like all digital files, as 1’s and 0’s on for example your SD card in your camera. When you delete a photo, it is actually still there! All that happens is you delete the link between your camera knowing the photo’s ID (call it photo number 12) and the string of 010101110…etc that is the photo. It can then be written over at a later stage by a new photo, but even then there are ways you can get it back. It’s actually quite tricky to permanently delete something!
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Comments
Glafkos commented on :
A small part of your memory card is always not available to you for use. This is reserved to save data such as how to load photos from the card and also save deleted photos! Now the questions is won’t this part of the memory card fill up if you keep deleting photos? It will at some infinite point but the reason that it doesn’t when you delete your for example 100 photos at once is that the data (the o101011 Paul mentioned) gets encrypted in a way that it takes a lot less space!! As Paul said there are ways to get these photos back. But they don’t always come back in one piece! 🙂 You might get parts of the photo missing !