gyoung Posted August 18, 2019 Share #81 Posted August 18, 2019 Advertisement (gone after registration) 1 hour ago, ianman said: Yes, that is my understanding. As opposed to overwritting, which really is a bad idea. Do it the first time to be sure there is no crap on the card and then just delete. But if you are deleting then you are also overwriting... Gerry Link to post Share on other sites More sharing options...
Advertisement Posted August 18, 2019 Posted August 18, 2019 Hi gyoung, Take a look here Edit on the go or wait to get home. I'm sure you'll find what you were looking for!
ianman Posted August 18, 2019 Share #82 Posted August 18, 2019 (edited) 10 minutes ago, gyoung said: But if you are deleting then you are also overwriting... I don't believe so. Edit: Deleting will remove the reference to the file so it no longer appears to the user and so the file management system knows it can reuse the disk blocks to write a new file (obviously partial overwriting happens at that time). Formatting/overwriting will remove the reference AND write gibberish to the blocks used by that file, thus making it unrecoverable. The issue is that SSD have a limited number of writes. If you overwrite when deleting you use up twice the amount of "writes" and hence diminish the lifespan of the drive. Edited August 18, 2019 by ianman Link to post Share on other sites More sharing options...
jaapv Posted August 18, 2019 Share #83 Posted August 18, 2019 Formatting as such will not remove the data. To do so you need to use a method like Secure Erase, which will do several overwrites. Even then some data can be recoverable forensically, due to the permittivity principle, i.e. the capacitance of a medium cannot be reduced competely to zero. Link to post Share on other sites More sharing options...
gyoung Posted August 18, 2019 Share #84 Posted August 18, 2019 A high level format I think writes a zero to very location so I doubt anything could be recovered? This seems a good summary https://www.apotelyt.com/photo-memory/sd-card-formatting Gerry Link to post Share on other sites More sharing options...
Guest Posted August 18, 2019 Share #85 Posted August 18, 2019 8 hours ago, plasticman said: Must be the horizontal rain that’s causing the chromatic aberration and soft focus, Neil. No I don’t think the rain had anything to do with it........ just crappy equipment. Neil Link to post Share on other sites More sharing options...
Guest Posted August 18, 2019 Share #86 Posted August 18, 2019 Uploading images to the photo app on the New iPad Pro gives you the opportunity to delete the images on the card. I always accept that and let the iPad Pro delete the pictures off the card neil Link to post Share on other sites More sharing options...
FrozenInTime Posted August 18, 2019 Share #87 Posted August 18, 2019 Advertisement (gone after registration) 14 minutes ago, NW67 said: Uploading images to the photo app on the New iPad Pro gives you the opportunity to delete the images on the card. I always accept that and let the iPad Pro delete the pictures off the card neil I don’t trust Apple enough for that, and cloud backup kills cellular bandwidth, so I copy all from the card to the ipad, delete the outright bad ones on the ipad, but never delete any from the card. I use one card per day . Then maybe in three months once I have two HDD backups will I start to reuse the cards. Link to post Share on other sites More sharing options...
Guest Posted August 18, 2019 Share #88 Posted August 18, 2019 4 minutes ago, FrozenInTime said: I don’t trust Apple enough for that, and cloud backup kills cellular bandwidth, so I copy all from the card to the ipad, delete the outright bad ones on the ipad, but never delete any from the card. I use one card per day . Then maybe in three months once I have two HDD backups will I start to reuse the cards. Sorry but that just sounds way way to over the top......... have you got shares in SanDisc😀😀😀 Link to post Share on other sites More sharing options...
FrozenInTime Posted August 18, 2019 Share #89 Posted August 18, 2019 7 minutes ago, NW67 said: Sorry but that just sounds way way to over the top......... have you got shares in SanDisc😀😀😀 ... and I keep one HDD at home, the other at work ! SD cards are cheaper than a roll of slide film , so no great hardship. Link to post Share on other sites More sharing options...
Ouroboros Posted August 18, 2019 Share #90 Posted August 18, 2019 6 hours ago, ianman said: Is this issue related to a specific camera model and firmware or all?? Deleting images from the card in-camera is a bad practice for a number of reasons. As such it, has been well documented over many years and is why the post I responded to earlier deserves to be challenged. Here is an article that gives some explanation as to why deleting files from the card in-camera is not a very clever thing to do. Link to post Share on other sites More sharing options...
Guest Posted August 18, 2019 Share #91 Posted August 18, 2019 12 minutes ago, Ouroboros said: Deleting images from the card in-camera is a bad practice for a number of reasons. As such it, has been well documented over many years and is why the post I responded to earlier deserves to be challenged. Here is an article that gives some explanation as to why deleting files from the card in-camera is not a very clever thing to do. I don’t buy that. I’ve been deleting files in camera for years. Never had a issue. Neil Link to post Share on other sites More sharing options...
gyoung Posted August 18, 2019 Share #92 Posted August 18, 2019 52 minutes ago, NW67 said: I don’t buy that. I’ve been deleting files in camera for years. Never had a issue. Neil ...yet, but others have. Gerry Link to post Share on other sites More sharing options...
lykaman Posted August 18, 2019 Share #93 Posted August 18, 2019 54 minutes ago, NW67 said: I don’t buy that. I’ve been deleting files in camera for years. Never had a issue. Neil +1 Link to post Share on other sites More sharing options...
Ouroboros Posted August 18, 2019 Share #94 Posted August 18, 2019 57 minutes ago, NW67 said: I don’t buy that. I’ve been deleting files in camera for years. Never had a issue. Neil You haven't been around in photography for long enough Link to post Share on other sites More sharing options...
Guest Posted August 18, 2019 Share #95 Posted August 18, 2019 7 minutes ago, gyoung said: ...yet, but others have. Gerry Who Link to post Share on other sites More sharing options...
Guest Posted August 18, 2019 Share #96 Posted August 18, 2019 3 minutes ago, Ouroboros said: You haven't been around in photography for long enough Yes I have Link to post Share on other sites More sharing options...
lykaman Posted August 18, 2019 Share #97 Posted August 18, 2019 Bought my first Leica Digital 1.3mp (Fuji) @ FFordes Southend On Sea Essex Uk.. My son still uses it, great images..Always either Deleted or Formatted card in camera, No Issues... L (sure seems to me I've been around a long time) Link to post Share on other sites More sharing options...
gyoung Posted August 18, 2019 Share #98 Posted August 18, 2019 20 minutes ago, NW67 said: Who John Smith, Henry Brown, George Washington, Margaret Thatcher to name but a few... 1 Link to post Share on other sites More sharing options...
ianman Posted August 18, 2019 Share #99 Posted August 18, 2019 (edited) 2 hours ago, Ouroboros said: Deleting images from the card in-camera is a bad practice for a number of reasons. As such it, has been well documented over many years and is why the post I responded to earlier deserves to be challenged. Here is an article that gives some explanation as to why deleting files from the card in-camera is not a very clever thing to do. Thanks, I'll have a read. Edit 5 mins later: I have just read the article. Apart from the intro where he describes exactly what I have been writing here, it's not worth the pixels it's written on. Although there are a couple of good laughs. "Don’t pull a memory card out of your camera or card reader when data is being written or read from the card." Nooo? really??? Edited August 18, 2019 by ianman Link to post Share on other sites More sharing options...
gyoung Posted August 18, 2019 Share #100 Posted August 18, 2019 28 minutes ago, ianman said: Thanks, I'll have a read. Edit 5 mins later: I have just read the article. Apart from the intro where he describes exactly what I have been writing here, it's not worth the pixels it's written on. Although there are a couple of good laughs. "Don’t pull a memory card out of your camera or card reader when data is being written or read from the card." Nooo? really??? Well its written for a complete beginner, so its worth making observations like that IMHO, Rather like 'before you take the film out of the cassette to load it into the developing tank turn the lights out'. It doesn't do to overestimate the level of knowledge of your readers! Gerry 1 Link to post Share on other sites More sharing options...
Recommended Posts
Create an account or sign in to comment
You need to be a member in order to leave a comment
Create an account
Sign up for a new account in our community. It's easy!
Register a new accountSign in
Already have an account? Sign in here.
Sign In Now