Archived posting to the Leica Users Group, 2010/09/20
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]Sonny, Another white paper, somewhat old: http://tinyurl.com/2aqmbh6. What you say is completely true, the cards are cheap enough for one to be as conservative as he wants. It also true that trash do happen. Best, John On 9/20/2010 4:40 PM, Sonny Carter wrote: > On Mon, Sep 20, 2010 at 4:46 PM, John Nebel<john.nebel at csdco.com> > wrote: > >> Sonny, >> >> OK, I'll byte. >> > > > That's fine, and I'll agree the theoretical life is amazing, and I don't > doubt that the stuff will hold on to the information. Probably if you > leave > the sd card in situ in the camera, and pipe the info out through the usb, > it > will have near eternal life. > > But what happens in real life, for me at least, is that I shoot for a day, > maybe 50-100 shots, (sometimes only ten shots for a Friday Flower) pull out > the card, and stick it into a reader slot. I take down the pix, and stick > the card back into my computer. > > Remember, for my M8, on an 8 gig card, I have in excess of 1000 pictures > at > full rez in raw. I might delete a few here and there, but I don't quit > until I have the card at about 850, maybe 900 shots. > > Now, there's wear and tear on the contacts, the plastic case of the SD card > is not exactly bulletproof, and I'm loading the card into two different > computers and a camera. > > No white paper can convince me that trash don't happen in these real life > circumstances. > > The cards are cheap enough that I retire them after I fill one. I don't > reformat anymore. I once did, but I got burned twice. Once the card was > corrupted, and the other time it fell in half. bad glue. That was two > times too many. > > Thanks for the papers. They are interesting. Maybe the engineers need to > also be photographers. > > > > > >> >> http://tinyurl.com/rf67m >> >> I think SD cards should be quite reliable, anecdotal evidence aside. >> Maybe >> one should expect an 80 year lifetime? >> >> I liked http://www.storagesearch.com/ssdmyths-endurance.html - the math >> department run amok takes 50+ years to destroy a flash device? >> >> John >> >> PS >> >> I think about this every time I type "wr" in a Cisco switch or router and >> write something out to the dreaded FLASH. >> >> On 9/19/2010 10:52 PM, Sonny Carter wrote: >> >>> On Sun, Sep 19, 2010 at 11:37 PM, Daniel Tan<taniel.dan at gmail.com> >>> wrote: >>> >>> I was under the impression that in some circles, it's standard practice >>>> to >>>> format your card each time you clear it (ie, download onto your >>>> computer). >>>> >>>> >>> Well yes. but when you overwrite the media too many times, you run the >>> risk of leaving digital debris. I personally would not reformat more >>> than >>> three times. >>> >>> I'll probably be proven wrong by someone who can cite technical stuff and >>> have never had a problem because they are speaking theoretically. >>> >>> I only speak from experience. >>> >>> >>> >> _______________________________________________ >> Leica Users Group. >> See http://leica-users.org/mailman/listinfo/lug for more information >> > > >