Canon Digital Photography Forums  

Go Back   Canon Digital Photography Forums > 'Equipment Talk' section > Canon EOS Digital Cameras
Register Rules FAQ Members List Search Today's Posts Mark Forums Read



Reply
 
Thread Tools Display Modes
Old 8th of November 2009 (Sun)   #1
tundraman
Member
 
tundraman's Avatar
 
Join Date: Jan 2009
Location: Northern California
Posts: 321
Default UDMA 60mb/s or 45mb/s

Trying to find the right CF card for my 7D. I will use the 8fps but which card should I get?

SanDisk 16GB Extreme IV UDMA CompactFlash Card
http://www.bhphotovideo.com/c/produc...e_IV_UDMA.html


SanDisk Extreme CompactFlash Card 16GB

http://www.bhphotovideo.com/c/produc...Card_16GB.html
__________________
Canon stuff and lots of it SmugMug Coupon Code:9Sst64IEj4uzk Save $5 Instantly!!
tundraman is offline   Reply With Quote
This ad block will go away when you log in as member
Old 8th of November 2009 (Sun)   #2
TBath
Member
 
Join Date: Oct 2009
Location: South Jordan, Utah
Posts: 113
Default Re: UDMA 60mb/s or 45mb/s

I do not have any personal exp with either card but a review of each card's info at www.sandisk.com has me leaning towards the 2nd. Seem you are getting them from B&H for the same price. The 2nd card is faster...
TBath is offline   Reply With Quote
Old 8th of November 2009 (Sun)   #3
tancanon58
Member
 
tancanon58's Avatar
 
Join Date: Oct 2009
Location: southern california
Posts: 959
Default Re: UDMA 60mb/s or 45mb/s

I have own the first one but 4GB. It is fast but it is also depend on the pixels of the body. However, I will try the one has 60mb/s.
__________________
Bodies: 5D MkIII/ Oly ED-M5/ G10
Lenses: Tamron SP 24-70 2.8 Di VC /and some Panny and Oly lenses.
Flash: Canon600EX RT.
tancanon58 is offline   Reply With Quote
This ad block will go away when you log in as member
Old 8th of November 2009 (Sun)   #4
TBath
Member
 
Join Date: Oct 2009
Location: South Jordan, Utah
Posts: 113
Default Re: UDMA 60mb/s or 45mb/s

Let us know what you think of it. A new CF card is my next goodie to purchase.
TBath is offline   Reply With Quote
Old 8th of November 2009 (Sun)   #5
TopGun31
Member
 
TopGun31's Avatar
 
Join Date: Aug 2009
Location: Wherever my job brings me.
Posts: 177
Default Re: UDMA 60mb/s or 45mb/s

The second one is a newer generation of card ; it will replace the Extreme IV; they are better and apparently cheaper to produce ; in Europe they are also cheaper in stores. I just got myself one along with the Firewire reader from Sandisk, and both are extremly fast to empty on the hard drive.
TopGun31 is offline   Reply With Quote
Old 8th of November 2009 (Sun)   #6
apersson850
Cream of the Crop
 
apersson850's Avatar
 
Join Date: Nov 2007
Location: Traryd, Sweden
Posts: 10,538
Default Re: UDMA 60mb/s or 45mb/s

Even with a 90 MB/s card you'll not keep up with the processing power of the dual Digic IV in the 7D. They produce about 250 MB/s of image data, so you'll run out of buffer space anyway.
But a faster card will flush the buffer quicker, so there are still advantages.
__________________
Anders
apersson850 is offline   Reply With Quote
Old 8th of November 2009 (Sun)   #7
Tom W
Canon Fanosapien
 
Tom W's Avatar
 
Join Date: Feb 2003
Location: Chattanooga, Tennessee
Posts: 12,743
Default Re: UDMA 60mb/s or 45mb/s

I'd like to see someone that has both run some tests - one in high-speed burst mode and the other to determine how fast the two cards can upload information to the computer (assuming no other bottlenecks). I know that jumping up to the UDMA from non-UDMA adds at least 2 frames to the burst size on my 5D2 (shooting RAW), and speeds up subsequent shots once the buffer is full. I wonder if the 60 mbps would add much to this advantage.
__________________
Tom
5D III, 70D, & various lenses
Tom W is offline   Reply With Quote
Old 8th of November 2009 (Sun)   #8
Replaces
Senior Member
 
Replaces's Avatar
 
Join Date: Aug 2009
Location: Illinois, USA
Posts: 1,079
Default Re: UDMA 60mb/s or 45mb/s

I don't think 7D's write speed will be able to fully utilize that speed in either card...
although faster seems like a better option if speed is crucial for you.
(probably will flush camera buffer faster; at least by a fraction of a second)
__________________
"If you don't walk today, you have to run tomorrow."
Nikon, then Canon, then Nikon again. But I still love POTN over NikonCafe.

Nikon D90, MB-D80, Nikon D600, MB-D14, Nikkor AF-S 24-70mm f/2.8G, Nikkor AF-S 70-200mm f/2.8G VR.
Replaces is offline   Reply With Quote
Old 8th of November 2009 (Sun)   #9
mauimike
Member
 
Join Date: Jan 2009
Location: maui
Posts: 46
Default Re: UDMA 60mb/s or 45mb/s

I purchased the Sandisk Extreme IV 8GB UDMA CF at 45mb/sec at BH while Sandisk has a rebate program going on. No issues at all when using 8fps for my daughter's soccer games or shooting video (haven't seen the card buffer warning screen at all).
mauimike is offline   Reply With Quote
Old 8th of November 2009 (Sun)   #10
e02937
Goldmember
 
Join Date: Dec 2008
Posts: 2,714
Default Re: UDMA 60mb/s or 45mb/s

I use the 45mb UDMA cards of the 8gb flavor. They were a great price after rebate from Sandisk. I got three cars for $100. They work great for both still and video. I wouldn't spend the extra money on the 90mb/s but that's me.
__________________
Canon 7d
[15-85 IS] [70-200
f/4L IS] [I'm a PC]
[Full gear list and feedback]
e02937 is offline   Reply With Quote
Old 8th of November 2009 (Sun)   #11
Riverlander
Member
 
Riverlander's Avatar
 
Join Date: May 2007
Location: Riverland, South Australia
Posts: 686
Default Re: UDMA 60mb/s or 45mb/s

Quote:
I got three cars for $100. They work great
Really? US makes or imports?
__________________
Canon; 7D with grip, EF-S 10-22, EF 24-105L, 580EX II flash, 550EX flash, 430EX flash, Sigma; 18-50 f/2.8, 50-150 f/2.8, 120-300 f/2.8, 50-500 f/4.5-6.3 OS, 30 f/1.4, 150 Macro; Sigma APO 1.4x and 2x converters, Benro M-257 tripod & B-1 ballhead. Wimberley Sidekick. Lots of other stuff.
Riverlander is offline   Reply With Quote
Old 8th of November 2009 (Sun)   #12
e02937
Goldmember
 
Join Date: Dec 2008
Posts: 2,714
Default Re: UDMA 60mb/s or 45mb/s

The real deal, US made... I ordered them from BH Photo. This is what I ordered:

http://www.bhphotovideo.com/c/produc...e_IV_UDMA.html

I guess they are discontinuing the 45mb/sec in favor of the 90/sec version. When I ordered mine (about 1.5 months ago). They had a 3 pack for 299.95 and then a rebate of $200 (see the link above, there is a rebate form that is valid until 1/2/2010.

Perhaps they can be found at a reputable dealer now? Not sure.
__________________
Canon 7d
[15-85 IS] [70-200
f/4L IS] [I'm a PC]
[Full gear list and feedback]
e02937 is offline   Reply With Quote
Old 8th of November 2009 (Sun)   #13
Riverlander
Member
 
Riverlander's Avatar
 
Join Date: May 2007
Location: Riverland, South Australia
Posts: 686
Default Re: UDMA 60mb/s or 45mb/s

Oh dear!!!

Sorry, but I thought you were talking CARS - not CARDS
__________________
Canon; 7D with grip, EF-S 10-22, EF 24-105L, 580EX II flash, 550EX flash, 430EX flash, Sigma; 18-50 f/2.8, 50-150 f/2.8, 120-300 f/2.8, 50-500 f/4.5-6.3 OS, 30 f/1.4, 150 Macro; Sigma APO 1.4x and 2x converters, Benro M-257 tripod & B-1 ballhead. Wimberley Sidekick. Lots of other stuff.
Riverlander is offline   Reply With Quote
Old 8th of November 2009 (Sun)   #14
amfoto1
Cream of the Crop
 
Join Date: Aug 2007
Location: San Jose, California
Posts: 9,968
Default Re: UDMA 60mb/s or 45mb/s

Quote:
Originally Posted by apersson850 View Post
They produce about 250 MB/s of image data, so you'll run out of buffer space anyway.
But a faster card will flush the buffer quicker, so there are still advantages.
I have looked and looked for the 7D's write speed and can't find it in any of the specifications Canon has released.

Anyone know?

I'd be surprised if it was amuch bove 45MB/s, which means that any card faster than 300x wouldn't make any difference in the camera itself (but it might download to the computer faster).

The reason I was wondering is that I've noticed that the 7D takes longer to display an image right after it's shot. I have image review "off", but occasionally manually review an image. If you do that right after taking a shot, with 7D it won't display it, the preceding image will come up instead. One or two seconds later, the most recent image is available.

So image review isn't instantaneous on the 7D, the way it is on both 5D MkII and 50D.

In order to take full advantage of UDMA download speeds (transfering to your computer), you need to have an UDMA capable card reader and Firewire 800 connectivity. Slower readers can download from the cards, but only at their lower speed rating. USB 2.0 and Firewire 400 are going to take about twice as long to download a card.

I have an Express Card reader for my laptop that's able to do 54MB/s (close to 400x, which is 60MB/s), but it's a bit fiddly to load and unload cards (plus the laptop's single drive fills up fast, so I have to move images off it via a network pretty frequently).
amfoto1 is offline   Reply With Quote
Old 8th of November 2009 (Sun)   #15
amfoto1
Cream of the Crop
 
Join Date: Aug 2007
Location: San Jose, California
Posts: 9,968
Default Re: UDMA 60mb/s or 45mb/s

Quote:
Originally Posted by merlin2375 View Post
The real deal, US made... I ordered them from BH Photo. This is what I ordered:

http://www.bhphotovideo.com/c/produc...e_IV_UDMA.html

I guess they are discontinuing the 45mb/sec in favor of the 90/sec version. When I ordered mine (about 1.5 months ago). They had a 3 pack for 299.95 and then a rebate of $200 (see the link above, there is a rebate form that is valid until 1/2/2010.

Perhaps they can be found at a reputable dealer now? Not sure.
Looks like B&H has sold out of them, and the link to the rebate info on the product page is dead.

Go to B&H home page, click on "rebates" and then "memory". You can still get the Sandisk form. It's got a list of retailers who qualify. Lot's of familiar names on the list.

You have to buy the Extreme 4 cards to qualify for the bigger rebate.
amfoto1 is offline   Reply With Quote
Reply


Thread Tools
Display Modes

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

vB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump


All times are GMT -5. The time now is 08:32.


Powered by vBulletin® Version 3.6.12
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
This forum is not affiliated with Canon in any way and is run as a free user helpsite by Pekka Saarinen, Helsinki Finland. You will need to register in order to be able to post messages. Cookies are required for registering and posting. HTML in messages is not allowed, plain website addresses are automatically made active by the board.