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SanDisk unveils world’s first 1TB SDXC card at Photokina

Discussion in 'News - Discussion' started by CSBC, Sep 21, 2016.

  1. GeoffR

    GeoffR Well-Known Member

    If you have a 1TB drive in a camera, doesn't matter whether moving or still pictures you are going to need a multi TB drive in the processing computer, say 10 or 20TB. Today the cost of such a drive is prohibitive for the majority of users. Once the price of multi TB drives comes down and availability goes up a 1TB card will be practical but today it isn't.

    As I said, it isn't a practical proposition yet.
     
  2. Benchista

    Benchista Which Tyler

    Not entirely sure why you would need more than 2 TB, and they're extremely common these days.
     
  3. Andrew Flannigan

    Andrew Flannigan Well-Known Member

    Data will always expand to max out the capacity of every device. Those who think otherwise will be left having to explain what happened to an angry spouse, child, customer or all three.
     
  4. GeoffR

    GeoffR Well-Known Member

    Simple really Nick, if your 1TB of data is a large number of relatively small files, a 2TB drive in the computer may suffice, on the other hand if that 1TB is a small number of large files 2TB will probably be rather constrained. I am assuming that 8K video would create a small number of large files.
     
  5. Benchista

    Benchista Which Tyler

    Nope, still don't get it.
     
  6. Andrew Flannigan

    Andrew Flannigan Well-Known Member

    I think he's talking about block wastage. Lots of small files usually take up more disk space than the same amount of total file size in fewer big files. It's down to the block size that the partition was formatted with. Generally, the larger the disk the bigger the block size and thus the more space wasted when lots of small files just overlap onto a second or subsequent block. If you have fewer very large files, fewer blocks are wasted. So the way he's put it definitely sounds wrong.
     
  7. GeoffR

    GeoffR Well-Known Member

    No, that isn't what I meant at all. A 4K film would be around 100GB. So let us assume that only around 10% of the material shot ends up in the final product, that means that 1TB of data is required to edit down to that result. However, video editing rarely goes from the various takes directly to the final cut, there may be several versions of each scene before they are finally assembled. As you aren't going to delete any of the original 1TB of footage you will very soon end up filling a 2TB drive with different versions. Yes the unused versions will be deleted but not immediately.

    Something similar would be true of still images. If you assume a raw file of 100MB then you will get something under 10,000 of them on a 1TB drive. If you are going to edit 10% of those and render them as TIFF files before you delete the unwanted images you will also fill up a 2TB drive very quickly.

    In both cases you may want to retain a copy of your finished output on your hard drive for a period before moving it to your archive, how long before your working drive is full? Obviously this depends on the size but, unless you are routinely transferring data of your working drive and deleting your rejected images you will fill 2TB very quickly if your memory cards are 1TB. 10,000 images is probably a week's shooting for some professionals, would they want to fill their working drive with two weeks raw material? Yes of course duds will be deleted but, if you are away from the office/studio for a couple of weeks and your camera has the resolution and files sizes to justify the use of 1TB cards you will be filling them and you will need a bigger than 2TB drive.
     
  8. PeteRob

    PeteRob Well-Known Member

    Um. That sounds a lot. At an average of 15s a shot it would take over 40 hours just to look at 10,000 images.
     
  9. GeoffR

    GeoffR Well-Known Member

    That is the point, it is easy to take that number of images but it would be a full week's work just to review them so you need a big hard drive to allow storage until they can be reviewed.
     
  10. PeteRob

    PeteRob Well-Known Member

    Not a sustainable workflow!
     
  11. GeoffR

    GeoffR Well-Known Member

    Indeed not but if you take two weeks to capture the images you may then take several months to review and edit them, entirely depends on the speciality and working process.
     
  12. John King

    John King Well-Known Member

    Would this not be designed for Video recording, rather than still images?

    I know what you mean when you say if you filled it and it went haywire all the work has been lost, that is why I don't have any cards larger than 4gb. They are hardly onerous to carry several around with you
     
  13. P_Stoddart

    P_Stoddart Well-Known Member

    I run a full test of all cards purchased and usb flashdrives.

    It would be pretty pointless of manufactures to design and build larger memory cards if they were not capable of being filled.

    The concern of having small cards is that each physical insertion and removal wears the contacts and slot.

    There is also the risk of losing them and again the wearing of contacts etc to download each card onto a computer system.

    I actually download from the camera. Its faster that way. :)
     
  14. Andrew Flannigan

    Andrew Flannigan Well-Known Member

    Contact design has had a lot of effort put into it over the last twenty years or so. Most contacts are gold plated and the more often the device is removed and re-inserted the less likely dirt will disrupt the connection. In any case, given the commonly quoted MTBF for these interfaces of 10,000 extractions/insertions they'll last for 27 years or so on average if you you take them out every day.
     
  15. P_Stoddart

    P_Stoddart Well-Known Member

    "Less likely" is not zero LOL

    I have had connectors etc fail. :)

    Anything mechanical is a weakness in a system.
     
  16. GeoffR

    GeoffR Well-Known Member

    Yes, and your joints are just as liable to problems, but a camera or a card reader can be replaced as can a memory card. Not so your joints.
     
  17. Benchista

    Benchista Which Tyler

    Hmmm, well actually many of your joints CAN be replaced, of course. One of the most interesting modules of my degree was medical uses of materials, although I was one of very few who didn't run out of the room during the hip replacement video. And that only because I was too hungover to move. ;)
     
  18. Learning

    Learning Ethelred the Ill-Named

    Please will someone who can start new threads in his part of the site do so. Has there not been anything newsworthy since 2016?
    Is there some sort of industrial protest going on here because Chris has not even been notionally replaced. By that I mean no-one could replace Chris as a person, but someone could be doing the same job and hopefully growing into it. Is there some internal politics going on?
     
  19. GeoffR

    GeoffR Well-Known Member

    You have a point Nick but I was actually thinking shutter finger knuckles (closest human part to a camera) which I don't think can be replaced yet.
     

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