Go Back   Steve's Digicams Forums > Digicam Help > Memory Cards, Microdrives, Card Readers

Reply
 
Thread Tools Search this Thread
Old Jan 26, 2010, 11:07 AM   #1
Super Moderator
 
Mark1616's Avatar
 
Join Date: Oct 2005
Posts: 7,397
Default Sandisk 16Gb Options, will I be OK with UDMA

Hi all,

There are some things I'm completely green about, one of them is the new technology for memory cards.

I'm about to go away and want to get a new 16Gb card, previously I've used Extreme III cards but when looking in notice there is an Extreme UDMA which is twice the speed but are there limitations to cameras and readers that they can be used with?

I want to use the cards with the Canon 1DmkIII, 5DmkII and 7D.

If I'm reading things right there is also something very strange with pricing.

http://www.amazon.co.uk/gp/product/B..._luc_sim_01_03 Extreme UDMA 60mb/s 83.34

http://www.amazon.co.uk/Sandisk-16GB...4525464&sr=1-1 Extreme IV 45mb/s 146.16

http://www.amazon.co.uk/Sandisk-Extr...4524529&sr=1-7 Extreme III 30mb/s 69.65

If as I believe the 60mb/s card is the best then for 14 more I might as well get it..... also the Extreme IV is a crazy price.

I want to order today if possible so any help greatly appreciated.

Thanks,

Mark
Mark1616 is offline   Reply With Quote
Sponsored Links
Old Jan 26, 2010, 11:27 AM   #2
Administrator
 
Join Date: Jun 2003
Location: Savannah, GA (USA)
Posts: 22,378
Default

Here's an article you may find useful that includes tests of some of the newer card types with a 7D. You'll see a section showing how many images it could capture in 30 seconds of continuous shooting (raw+jpeg), too.

http://www.robgalbraith.com/bins/con...=7-10044-10297

The GMonster PhotoFast 533x Plus (making sure to get the Plus versus standard 533x version) cards appear to have the best "bang for the buck" right this minute, outperforming the Sandisk 300x and 600x series cards (i.e,, Extreme IV and Extreme Pro Series UDMA cards), with a 16GB card running $144 right now.

They're available from http://www.dvnation.com

Here's an earlier article discussing some of the newer cards excluding the Lexar models. It's got benchmarks of some of them in a 5D Mark II. Again the PhotoFast GMonster 533x Plus has the best bang for the buck for transfer speeds.

http://www.robgalbraith.com/bins/con...=7-10043-10255

I've also seen multiple Sony dSLR owners commenting on the PhotoFast cards elsewhere (working just fine in models like the A700 and A900), with Rob Galbraith indicating the same thing in some of his articles discussing them with newer Canon models capable of supporting faster UDMA transfer modes (like your 5D Mark II and 7D, with the 7D able to take advantage of newer Mode 6 transfer modes).

No, you don't need a special type of reader or anything, and they're backwards compatible with cameras that don't support faster UDMA mode 5 or 6 transfers (although you do see compatibility quirks with some cameras using larger cards from time to time; like some Nikon models not working with cards over 16GB in size).

There are some UDMA readers out now. But, with most, you'd be limited to the speed of the USB 2.0 port they're being used with anyway (so, you're not going to transfer at the speed the card is capable of using a newer reader type anyway, unless you go with a faster port type and reader capable of UDMA 5 or 6 transfer modes using a Firewire 800 reader, Expresscard type reader, etc. Rob has some card reader tests in some of those articles.

We should be seeing some USB 3.0 readers hitting store shelves sometime in the near future, too (but, you'd need to add a USB 3.0 PCIe adapter card to get USB 3.0 transfer speeds with them). Here's a post on that subject:

http://forums.steves-digicams.com/co...-usb-here.html
JimC is offline   Reply With Quote
Old Jan 26, 2010, 11:29 AM   #3
Senior Member
 
Join Date: Jan 2007
Location: Decatur, GA
Posts: 2,053
Default

I've been using extreme IIIs myself in Sony DSLRs since May 2009 and never had an issue with speed. Never had a need to go faster myself. The ones I have are 8GB and are the old speed; the newer extremes are faster and little more pricey now.

dave
Photo 5 is offline   Reply With Quote
Old Jan 26, 2010, 11:38 AM   #4
Administrator
 
Join Date: Jun 2003
Location: Savannah, GA (USA)
Posts: 22,378
Default

The only Sony models that will take advantage of faster UDMA transfer modes are the Sony A700, A850 and A900 right now anyway.

So, there's really no need to go with a faster card than the Extreme III with models like the A100, A200, A300, or A350.

But, Mark's EOS-5D Mark II and EOS-7D looks like they can make use of faster UDMA transfer modes (although the 5D Mark II appears to have diminishing returns going with the fastest cards). IOW, you're not going to see transfer rates twice as fast going from a 300x (45MB/Second) to 600x (90MB/Second) card, just because a card is capable of transfer speeds twice as fast under optimum conditions in a lab.

Now, whether or not you really need a card that fast card is another issue. LOL

If you're taking lots of high speed bursts in a row shooting raw+jpeg, perhaps. But, for most uses, the camera's buffer is probably large enough to handle what you'd throw at it with with standard Extreme III cards, as long as you don't take too many bursts in a row so that the camera will have time to finish emptying it's internal buffer to them before it fills up from consecutive bursts.

I tend to shoot mostly raw+jpeg, so I have run into my A700 slowing down taking lots of bursts, and probably should look into a faster card for it at some point if I start doing that kind of thing more often. But, I don't shoot a lot of sports like Mark1616 does either.
JimC is offline   Reply With Quote
Old Jan 26, 2010, 11:45 AM   #5
Super Moderator
 
Mark1616's Avatar
 
Join Date: Oct 2005
Posts: 7,397
Default

Great, so I can use the card in all 3 options and use my current card reader (why couldn't SDHC have been the same LOL). Doesn't look like I can get the PhotoFast GMonster 533x Plus from a company I trust here so will stick to Sandisk.

I'm only going for faster as I might benefit in the future and the price is pretty similar. Also delivery is better on the UDMA option.
Mark1616 is offline   Reply With Quote
Old Jan 26, 2010, 12:11 PM   #6
Administrator
 
Join Date: Jun 2003
Location: Savannah, GA (USA)
Posts: 22,378
Default

From Rob's tests, looking at 16GB card tests, it looks like the Lexar 600x cards are going to be the fastest in a model like your 7D, followed by the PhotoFast 533x Plus, and then the Sandisk Extreme Pro (600x) and Transcend 600x cards.

So, you may want to compare prices of the Sandisk Extreme Pro cards with Transcend 600x and Lexar 600x cards, too (in case one brand is priced significantly better compared to another brand in your area). Of course, make sure you're buying from a reputable dealer (especially with Sandisk cards, as you'll see more counterfeit Sandisk cards compared to most brands).
JimC is offline   Reply With Quote
Old Jan 27, 2010, 10:52 AM   #7
Senior Member
 
Join Date: Jan 2007
Location: Decatur, GA
Posts: 2,053
Default

I really think this is the card Mark is after



http://www.newegg.com/Product/Produc...08530&Tpk=64GB compact flash card

dave
Photo 5 is offline   Reply With Quote
 
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



All times are GMT -5. The time now is 3:56 PM.