On Apr 8, 2015, at 12:11 PM, Steve Cottrell <[email protected]> wrote:
> On 8/4/15, Stanley Halpin, discombobulated, unleashed: > >> How safe is safe enough? If we have airbags, do we really need seat >> belts as well? Nomex suit? Roll cage? Helmet? How far do we need to go >> to protect ourselves? > > You're still sore I reckon about my Pentax FF order ;-))) Early on the 1st I had received a Woodworking Newsletter which contained the following link: http://www.woodworkersjournal.com/plans/featured-free-plans/ (Good reading, particularly if you need a pallet or some sawdust.) So I was already on the alert for anything out of the ordinary. > > Points taken. > > I'm shooting video, and on the particular camera I'm using, a 16GB card > will give about 50 mins of screen time. I think in general, my approach > is to minimise risk of loss and inconvenience due to hardware or > software failure. I've decided that spreading the risk out over more > cards is the way I play it. I also record onto 2 cards simultaneously, > so a backup is made as I go. > > It's not that I don't trust the technology, it's just that I don't trust > the technology. > > >> For me, I am willing to assume that 2nd-3rd generation 64GB SD cards are >> just as reliable as 3rd-4th generation 32GB cards as 4th-5th generation >> 16GB cards etc. So once the initial production of a new bigger better >> faster card has passed, I don't get too concerned about card failure. >> But still, maybe someday just possibly it might happen. On the other >> hand, changing cards on a rainy windy day on the beachfront or next to a >> jungle waterfall or aboard a racing yacht creates its own potential for >> problems not only with the card but also with the camera. >> >> So, to avoid opening up the camera in inclement conditions, I judge >> "required" capacity by # of images rather than GB. >> >> I usually have two cameras and alternate shots. Long ago one body had >> color print, the other B&W or color slides. More recently the one body >> had a wider lens, the other had a longer lens. Now the two bodies I am >> using yield a somewhat different look and feel, but I've still tended to >> use one for wider shots, the other for longer shots. The key though is >> that by using two bodies, even if I have a card failure I have not lost >> everything from that time period. >> >> With my K-3 I use 32GB cards which provides a nominal capacity of about >> 560 images plus that many more on the 2nd card. So I can usually get >> through a day on one card and the 32GB in the 2nd card slot gives me a >> 100% margin. With the 645z I have a 64GB in the first slot which gives a >> nominal capacity of 600 images, plus 250-300 nominal on the 32GB in the >> second slot. So again I can get through a day on one card with a 50% >> margin with the 2nd card. If/when I get a camera with larger files (or >> if I find myself shooting drastically more frames per day) I will move >> on up to larger cards as needed to keep me in that range of one-days- >> worth of images-per-card. If I were shooting professionally (= many more >> shots per day, also = higher cost of losing the images on a card), I >> would probably opt to stay with this same card-capacity and accept the >> need to occasionally change cards in the middle of the day. > > Sounds like a good system. > > I take it you've never had a card fail? I have damaged one of the thin metal contacts on one card through fumble fingered poor insertion into a card reader. I was able to fix the card well enough to read it; I then threw it away. I’ve never had any other failure that I can recall. I vaguely recall there might have been one instance where I tried to chimp after three or four images at the start of the day, was surprised to find that no images had been recorded. So I threw that one away. > If you had, and you were being > paid good daily rates for your shooting, I wonder would you do things > differently? Just curious. > > I would probably make the same sort of choices you have. If I were doing this professionally, “getting and keeping the shot” would become far more important than worrying about possible damage to the camera which might result from card changes in field conditions. I would strongly prefer bodies that afforded two card slots that could be configured to write original to one, duplicate backup to the second. If I could not get that sort of realtime backup I might use smaller cards. There is another tradeoff there. The more small cards you use, the more you increase the odds that you will have a bad card. If you use one or a few large cards, the odds are better that it/they won’t fail but a failure would be much more painful. BTW, I don’t know if it really makes any difference but I have never or at least hardly ever used anything than a genuine Sandisk card. I do tend to trust the technology, I believe that SD failure rate is low enough that I won’t spend much energy worrying about it, but on the other hand I am going to maximize my chances of being right by buying from “the” source. stan > -- > > > Cheers, > Cotty > > -- PDML Pentax-Discuss Mail List [email protected] http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
