Why should I buy a Sandisk (or equivalent) Extreme over an Ultra sd card?


Dr. Mhuni

Link Posted 10/06/2009 - 06:33
This is a basic question (excuse my ignorance) that has been asked before though apparently not answered (see https://www.pentaxuser.com/forum/topic/Which-SDHC-card-4414/p-1).

Any advice much appreciated.
Mhuni

500px

greynolds999

Link Posted 10/06/2009 - 07:28
The difference is down to the 'class' of card, which fundementally means the speed. This will allow your camera and computer to read and write to and from the card more quickly.

A class 2 card (such as a normal standard card) will guarantee to write at 2MB/s whereas a class 4 (like a SanDisk Ultra) will be at 4MB/s.

You will notice this if you are taking lots of RAWs in rapid sucession. The orange light will go out much more quickly! If you were to shoot video on some devices you may also need a higher class.

Personally I never buy faster cards as I don't feel I need that extra speed.

As to whether the camera will take advantage of the speed is another question. Hopefully someone else can answer....
My Photobucket

iceblinker

Link Posted 10/06/2009 - 10:44
K10D and K20D (except in Burst mode) don't take much advantage of a faster card, but it can make a dramatic difference to some other models (including *ist DS in my experience) with the buffer taking up to half the time to clear with a faster card, allowing the camera to be ready to shoot again many seconds sooner after a load of continuous RAW shots.

Sandisk Ultra is nothing special. Sandisk Extreme III is really fast, and actually faster than the Class 6 specification.

I can also recommend this Toshiba card from this seller:
http://www.dc-battery.co.uk/product_info.php/products_id/13695
~Pete
Last Edited by iceblinker on 10/06/2009 - 10:48

shim

Link Posted 10/06/2009 - 11:17
iceblinker wrote:

I can also recommend this Toshiba card from this seller:

Hi Pete, this ones doing them for 9 inc. postage and the 8GB for 16 also got the 32GB White Toshiba at 35.49 link I've never dealt with them, I've just got the one 4GB from the seller you posted, only slight problem with them is they didn't fill in the Customs Declaration and you only need some jobsworth to decide to charge you VAT on the RRP to make it into an expensive card.

Toshiba White's are excellent and very fast though no matter who you buy them off.

Edit: Just ordered an 8GB I need it with the new GX-20 Jpegs have jumped up to 10MB each compared with 2.7MB on the K10D also DNG are much bigger than PEF..... might need a 16GB

shim
Last Edited by shim on 10/06/2009 - 11:32

polchraine

Link Posted 10/06/2009 - 11:29
I do not see much difference when shooting but I rarely shoot fast enough to fill the buffer.

BUT when you come to download 8GB from the card to PC it makes all the difference.

Using a slow card will give you time to go and collect a take away meal and start eaing it whilst you wait ... but with a good Sandisk Extreme you will just about have time to make a cup of tea!

There is nothing more frustrating than sitting and waiting for GBs of images to download.
.
K20D, *istD, MZ-S, Super-A, ME Super, MX
DA* 16-50, DA* 50-135, DA* 300,
DA 50-200, FA 24-90, FA 20-35,
M 400-600, A 50 f1.4, A 28 f2.8, A 70-210, M 35-80, M 50 f1.7
A x2S teleconverter and a few others ...

shim

Link Posted 10/06/2009 - 11:39
Here's an update on all the cards I've tested:

SINGIM SG365S READER SD/SDHC
============================

--------------------------------------------------
CrystalDiskMark 2.2 (C) 2007-2008 hiyohiyo
Crystal Dew World : http://crystalmark.info/
--------------------------------------------------

FUJI SDHC 133x 4GB

Sequential Read : 18.967 MB/s
Sequential Write : 9.196 MB/s
Random Read 512KB : 18.664 MB/s
Random Write 512KB : 2.100 MB/s

Test Size : 100 MB
Date : 2009/04/27 11:01:05

--------------------------------------------------
CrystalDiskMark 2.2 (C) 2007-2008 hiyohiyo
Crystal Dew World : http://crystalmark.info/
--------------------------------------------------

TOSHIBA BLACK 4GB

Sequential Read : 19.065 MB/s
Sequential Write : 9.859 MB/s
Random Read 512KB : 18.700 MB/s
Random Write 512KB : 2.339 MB/s

Test Size : 50 MB
Date : 2009/04/28 18:48:21

--------------------------------------------------
CrystalDiskMark 2.2 (C) 2007-2008 hiyohiyo
Crystal Dew World : http://crystalmark.info/
--------------------------------------------------

TOSHIBA WHITE 4GB SDHC Class 6

Sequential Read : 19.242 MB/s
Sequential Write : 16.448 MB/s
Random Read 512KB : 19.034 MB/s
Random Write 512KB : 7.123 MB/s

Test Size : 50 MB
Date : 2009/05/18 20:44:34


--------------------------------------------------
CrystalDiskMark 2.2 (C) 2007-2008 hiyohiyo
Crystal Dew World : http://crystalmark.info/
--------------------------------------------------

TOSHIBA WHITE 2GB SD

Sequential Read : 16.853 MB/s
Sequential Write : 14.576 MB/s
Random Read 512KB : 16.783 MB/s
Random Write 512KB : 7.356 MB/s


Test Size : 50 MB
Date : 2009/05/08 18:15:11


--------------------------------------------------
CrystalDiskMark 2.2 (C) 2007-2008 hiyohiyo
Crystal Dew World : http://crystalmark.info/
--------------------------------------------------

Integral Pro 4GB Class 6

Sequential Read : 18.911 MB/s
Sequential Write : 9.558 MB/s
Random Read 512KB : 18.773 MB/s
Random Write 512KB : 2.271 MB/s

Test Size : 50 MB
Date : 2009/05/07 14:41:51

-----------------------------------------------------------
TRANSCEND CARD READER P5
-----------------------------------------------------------
-----------------------------------------------------------

--------------------------------------------------
CrystalDiskMark 2.2 (C) 2007-2008 hiyohiyo
Crystal Dew World : http://crystalmark.info/
--------------------------------------------------

FUJI SDHC 133x 4GB

Sequential Read : 17.484 MB/s
Sequential Write : 8.718 MB/s
Random Read 512KB : 17.238 MB/s
Random Write 512KB : 1.882 MB/s

Test Size : 50 MB
Date : 2009/05/10 19:12:02

--------------------------------------


shim
Last Edited by shim on 10/06/2009 - 11:51

Mongoose

Link Posted 10/06/2009 - 11:43
with a K10 or K20 (and presumably the new K7) there is little noticeable difference unless you are really going for it with the long sequences. 9 RAW frames is generally enough to keep the card from ever getting in your way. The biggest issue is when you want to review the shot you just took in order to assess whether to re-take it or not, this will be much quicker with a fast card.

With the later *ist series and K100/200 the buffer is much smaller and you may notice the difference more quickly, although the *istDL is rather limited in what it can make use of it does benefit from faster than standard cards.

Saying that, I run my cameras with Sandisk Extreme III cards almost exclusively simply because the price difference when I last bought cards was negligable. In fact at one point 7dayshop were charging less for ExtremeIIIs than for Ultra2s! Also I do trip off the occasional long sequence and it's nice to know all my cards are up to the task when needed.
you don't have to be mad to post here



but it does help

Unlocker

Link Posted 10/06/2009 - 11:50
Don't forget video on the K-7 too, high speed cards I presume are a must.

Also 5FPS does fill up the buffer a lot quicker than 3FPS if you do that sort of thing. I did a 14 frame JPEG burst on the K-7 that's in the photos section, then carried on shooting. No slow down or waiting whatsoever, same with the video!

Like Mongoose I also use exclusively Sandisk Extreme III cards, and at the current price levels compared to a few years ago, it's just a no brainer for me.

WebsiteBlogGearTwitterFacebook

shim

Link Posted 10/06/2009 - 12:00
It's already been noted on other threads that Sandisk Extreme's aren't always recognized in my K10D so I don't use them to be on the safe side.
There are other posts from people who have had problems with them.

shim

Unlocker

Link Posted 10/06/2009 - 12:18
I've only ever used Sandisk Extreme 4GBs in the K10 with no problems whatsoever, so really not sure where that problem lies?

There were / are a lot of good fakes around so not sure if that is part of the problem? Rule of thumb would be avoid eBay sellers and only buy from reputable dealers. I use Play.com.

Edit: Same for K20 & K-7 too!

WebsiteBlogGearTwitterFacebook
Last Edited by Unlocker on 10/06/2009 - 12:36

shim

Link Posted 10/06/2009 - 12:23
Unlocker wrote:
I've only ever used Sandisk Extreme 4GBs in the K10 with no problems whatsoever, so really not sure where that problem lies?

There were / are a lot of good fakes around so not sure if that is part of the problem? Rule of thumb would be avoid eBay sellers and only buy from reputable dealers. I use Play.com.

Fakes..... another reason to avoid them
Play and Amazon..... two more reasons

shim

polchraine

Link Posted 10/06/2009 - 12:33
It is not just Sandisk that are suffering from fakes ... there are copies of other top brands starting to appear and how long before people start complaining that their Toshiba/Lexar/Kingston/Crucial &c card does not work.

I personally would never buy from ebay and be very cautious with Amazon and will only buy from Amazon and not one of their "partners".

Have a look on ebay - there are some guides to spotting fake cards - not a 100% perfect/guaranteed solution but shows areas to look at.
.
K20D, *istD, MZ-S, Super-A, ME Super, MX
DA* 16-50, DA* 50-135, DA* 300,
DA 50-200, FA 24-90, FA 20-35,
M 400-600, A 50 f1.4, A 28 f2.8, A 70-210, M 35-80, M 50 f1.7
A x2S teleconverter and a few others ...

shim

Link Posted 10/06/2009 - 12:52
The two I bought (Extremes) weren't fakes and one was exchanged by the dealer and that was the same. They are as fast as my other cards and I use them in an old Minolta F300. My Pure Evoke DAB Radio won't work with Standard 1GB Sandisks, all other makes are fine.


Just try a search on Google for "sandisk sd card won't work" and see what you get.

Surprised Amazon have these cards on sale currently with reviews at the bottom claiming they are fakes link

shim

polchraine

Link Posted 10/06/2009 - 13:29
But that supplier is NOT Amazon - but Digital Media Source ... which is my point. Amazon - YES, others through Amazon Market Place - NO.

One of the reviews states that their card was bought from a different seller - EEK.
.
K20D, *istD, MZ-S, Super-A, ME Super, MX
DA* 16-50, DA* 50-135, DA* 300,
DA 50-200, FA 24-90, FA 20-35,
M 400-600, A 50 f1.4, A 28 f2.8, A 70-210, M 35-80, M 50 f1.7
A x2S teleconverter and a few others ...

ttk

Link Posted 10/06/2009 - 14:05
I use Laxar cards now since having Sandisk cards give up for no reason
Tel,
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