Joep van Steen

Joep van Steen

Lives in Netherlands Apeldoorn, Netherlands
Has a website at http://www.disktuna.com
Joined on Dec 7, 2016
About me:

20+ years experience in logical data recovery and developing data recovery software. Currently working on digital photo repair and recovery software.

Joep van Steen's recent activity

  • OK thanks very much!!
  • In addition to TIFs, saved as PSD. https://drive.google.com/file/d/1EXqjcziprHLZh78cG5busK14du1Uju3t/view?usp=sharing
  • You could not open the TIFF I uploaded? Weird! But good info, thanks, I'll see what I can do. Can you do me a favor and see if PhotoShop or Lightroom opens this one: ...
  • Replied in OP was correct
    Now being in this discussion for over a day and I wonder about meaningfulness of the term bit rot. For example, explain JPEG example in the Wikepedia article. If that file is on my hard drive you'd ...
  • Lossy compression. Not all compression. Wouldn't be very desirable if a ZIP file gets corrupted or degrade each time you re-compress.
  • Ah, missed that, my response was to OP. FWIW there's no "the best". For example I have seen ReclaiMe recover files from for example HFS+ where the others didn't. In a different scenario another ...
  • Yeah, a tad more than that. I am not too proud to admit that if I think I'm right, I may stop critically considering what the other party brings to the table. Also concept of data and information ...
  • Pros regard the tools you propose 'toys'. For logical data recovery in most labs they use R-Studio (Google 'R-Studio file recovery' or you may end up with an unrelated programming tool), UFS ...
  • FWIW my business is digital photo repair, but I get files on a regular basis that are actually a product of file recovery. So there's no way around it, I have to specialize in that that too. The ...
  • You know what, I think I know what you mean and can see how you could define the 'charge' or whatever the medium. It just took me a night's sleep. After all it is supposed to represent a zero or ...
  • Ow, nice! What did you use as base, the corrupt DNG or the TIFF?
  • Don't try to be funny or sarcastic because you suck at it. Anyway, I used to store digital data on a compact cassette. It didn't say digital data storage on the tin. Point, I don't care what they ...
  • Here's an answer: https://fstoppers.com/education/about-jpeg-images-and-their-quality-degradation-435235
  • Instagram isn't smart enough, that's for sure ;) https://petapixel.com/2015/02/11/experiment-shows-happens-repost-photo-instagram-90-times/
  • Yes, indeed as I stated. Yes, it does happen That can happen too. Okay. First of all it's numbers I made up just to show for example NAND cells do not store zero or ones. There's a range values ...
  • Yes, specifically in case of Photoshop. I do not know if it's the default but Photoshop tends to insert restart markers I noticed. if I am not mistaking it has to re-decode to do that.
  • Really? I do? Really? And so? It's still stored using analog information. Fact it this explains to a degree bit rot. Better than your broken media explanation. You're not getting a zero or a one. ...
  • Godammit, I tried explaining that multiple times already. Ow wow, we call it that. That settles it. It is what it is. Probably not. It's a charge trapped. No it's not digital. Yes it's a charge.
  • What I clearly think is what I just described. If I failed to explain that by now it's no use continuing this conversation. You could have fooled me. You made it sound as if we could find absolute ...
  • I fail to see the point. In the end, data is stored as analog information. It does not just flow, it's processed, decoded, converted, digitized and whatnot. Exactly. NAND cells trap electrons is ...
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Total messages 312
Threads started 1
Last post 1 day ago
Total comments 6
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Last post 6 months ago
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Photos uploaded 8
Last upload Oct 31, 2019