Has anyone tried Sandisk Extreme Pro (45Mbyte/s) cards on the K-5

Christine Tham · 02-28-2011, 07:21 PM

Okay, I admit I lost control and bought a Sandisk Extreme Pro card yesterday - waiting for it to arrive.

Is anyone else using this card and is there an improvement in write speed on the K-5?

I'm currently using the Sandisk Extreme (30 Mbyte/s) and it is significantly faster than my old PQI Class 6 card, but I wasn't sure the K-5 could take advantage of the 45Mbyte/s write speed

penta-mx · 02-28-2011, 07:29 PM

I ordered one with my K-5, last week, but it didn't arrive on time, so I don't have it with me, yet. I'm also interested to hear if anyone has experience with them.

aaalegre · 02-28-2011, 07:34 PM

Got the card a few days ago I must say its FAST........

ZEPsikopat · 03-01-2011, 01:00 AM

I ordered a pair, they should arrive by the end of the wekk, I'll compare them to my current Extreme III.

**eaglem** · 03-01-2011, 04:15 AM

I have the Sandisk Extreme Pro 16gig card and it seems to be working extremely well.

Student · 03-01-2011, 04:28 AM

I have an Extreme III, are you talking about the Extreme IV?

Christine Tham · 03-01-2011, 12:26 PM

Originally posted by Student

I have an Extreme III, are you talking about the Extreme IV?

No, it's the new Extreme Pro that Sandisk announced in Jan 2011:
SanDisk ships Extreme Pro SDHC UHS-I memory card: Digital Photography Review

I am not sure the K-5 is UHS-I compatible - when I receive the card I'll try and compare it with my Extreme and see if there is an improvement.

bobmaxja · 03-01-2011, 12:31 PM

No it's not compatible . Here what they say on the latest Firmware upgrade for SXDC card but the comment is for all SDHC

Quote:

Compatible with SDXC memory card. * Transfer rate is not compatible with UHS speed class.

Christine Tham · 03-01-2011, 12:42 PM

Originally posted by bobmaxja

No it's not compatible . Here what they say on the latest Firmware upgrade for SXDC card but the comment is for all SDHC

That just means the K-5 does not have the UHS-I 4-bit transfer mode, which allows up to 104MB/s.

Standard 1-bit transfer mode allows up to 25 MB/s - but many cards fall short of this theoretical transfer speed.

It will be interesting if the Extreme Pro gets closer to the theoretical limit compared to the Extreme. There's a lot more to the performance of a memory card than just the bus transfer speed.

azimuthal · 03-01-2011, 12:51 PM

Hmm, I want one.

RonHendriks1966 · 03-01-2011, 03:21 PM

I'm thinking about it.

Would you please look at http://https://www.pentaxforums.com/forums/pentax-k-5-forum/128924-writespeed...card-test.html and if possible do the test inside your K-5 and see what writespeed is possible in camera?

Originally posted by RonHendriks1966

RAW:
- At iso 5000 files are uge, almost 30 Mb for a single file with no (hood) cap on. In 15 sec. the camera took 31 RAW that where 920 Mb and after 52 seconds the red light was out, giving a filewrite off 17,7 MB/s including all processing. In 60 seconds the K-5 took 58 RAW giving 1,736 Gb of filesspace to fill. The difference of 27 files giving 816 MB to write in 45 seconds -> 18,1 Mb/s

I think that is the limitation of the K-5 or my card or the combination. The card is a classe 10 32Gb PQ1 card, and writemax according to the manufacture is 24,5 Mb/s (for what it's word since I haven't tested it myself) with 30 Mb/s readspeed.

Basicly it's about creating more file-body then the camera can digest so you can see the difference between processor speed to process and writespeed to the card.

Thanks!

creampuff · 03-01-2011, 03:27 PM

Seriously overkill for normal photo taking but definitely handy if you shoot video a lot.

Christine Tham · 03-01-2011, 03:41 PM

Originally posted by creampuff

Seriously overkill for normal photo taking but definitely handy if you shoot video a lot.

I shoot a lot at 7fps and like the buffer to clear as quickly as possible. The Extreme was a lot better than my previous Class 6 card - I'm hoping to get a bit extra with the Extreme Pro.

RonHendriks1966 · 03-01-2011, 03:45 PM

Originally posted by Christine Tham

I shoot a lot at 7fps and like the buffer to clear as quickly as possible. I'm hoping to get a bit extra with the Extreme Pro.

My thoughts to, a full buffer in RAW takes a real long time to clear, so shortening that time would be great.

qtopplings · 03-01-2011, 03:55 PM

Seems like a waste of money to me. It's more than 5X the price of a class 10 card. I've never had a problem with video or the buffer with a standard card, and can wait a second or two if I really tax the card. I guess if you really need it for your job, then it would be worth it.

02-28-2011, 07:21 PM	#1
Christine Tham Veteran Member Join Date: Nov 2008 Location: Sydney, Australia Photos: Gallery Posts: 2,269	Has anyone tried Sandisk Extreme Pro (45Mbyte/s) cards on the K-5 Okay, I admit I lost control and bought a Sandisk Extreme Pro card yesterday - waiting for it to arrive. Is anyone else using this card and is there an improvement in write speed on the K-5? I'm currently using the Sandisk Extreme (30 Mbyte/s) and it is significantly faster than my old PQI Class 6 card, but I wasn't sure the K-5 could take advantage of the 45Mbyte/s write speed

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02-28-2011, 07:29 PM	#2
penta-mx New Member Join Date: Dec 2007 Location: Mexico Photos: Gallery Posts: 15	I ordered one with my K-5, last week, but it didn't arrive on time, so I don't have it with me, yet. I'm also interested to hear if anyone has experience with them.

02-28-2011, 07:34 PM	#3
aaalegre Senior Member Join Date: Aug 2007 Location: new jersey Photos: Gallery \| Albums Posts: 112	Got the card a few days ago I must say its FAST........

03-01-2011, 01:00 AM	#4
ZEPsikopat Senior Member Join Date: Apr 2008 Location: Luxembourg Posts: 109	I ordered a pair, they should arrive by the end of the wekk, I'll compare them to my current Extreme III.

03-01-2011, 04:15 AM	#5
eaglem Site Supporter Join Date: Feb 2009 Location: Perth Western Australia Photos: Gallery Posts: 43,141	I have the Sandisk Extreme Pro 16gig card and it seems to be working extremely well.

03-01-2011, 04:28 AM	#6
Student Inactive Account Join Date: Dec 2010 Posts: 234	I have an Extreme III, are you talking about the Extreme IV?

03-01-2011, 12:26 PM	#7
Christine Tham Veteran Member Join Date: Nov 2008 Location: Sydney, Australia Photos: Gallery Posts: 2,269 Original Poster	Originally posted by Student I have an Extreme III, are you talking about the Extreme IV? No, it's the new Extreme Pro that Sandisk announced in Jan 2011: SanDisk ships Extreme Pro SDHC UHS-I memory card: Digital Photography Review I am not sure the K-5 is UHS-I compatible - when I receive the card I'll try and compare it with my Extreme and see if there is an improvement.

03-01-2011, 12:31 PM	#8
bobmaxja Veteran Member Join Date: Mar 2010 Location: Laval, Quebec Canada Posts: 2,171	No it's not compatible . Here what they say on the latest Firmware upgrade for SXDC card but the comment is for all SDHC Quote: Compatible with SDXC memory card. * Transfer rate is not compatible with UHS speed class.

03-01-2011, 12:42 PM	#9
Christine Tham Veteran Member Join Date: Nov 2008 Location: Sydney, Australia Photos: Gallery Posts: 2,269 Original Poster	Originally posted by bobmaxja No it's not compatible . Here what they say on the latest Firmware upgrade for SXDC card but the comment is for all SDHC That just means the K-5 does not have the UHS-I 4-bit transfer mode, which allows up to 104MB/s. Standard 1-bit transfer mode allows up to 25 MB/s - but many cards fall short of this theoretical transfer speed. It will be interesting if the Extreme Pro gets closer to the theoretical limit compared to the Extreme. There's a lot more to the performance of a memory card than just the bus transfer speed.

03-01-2011, 12:51 PM	#10
azimuthal Forum Member Join Date: Aug 2009 Location: reno Posts: 70	Hmm, I want one.

03-01-2011, 03:21 PM	#11
RonHendriks1966 Banned Join Date: Jan 2009 Photos: Gallery Posts: 9,675	I'm thinking about it. Would you please look at http://https://www.pentaxforums.com/forums/pentax-k-5-forum/128924-writespeed...card-test.html and if possible do the test inside your K-5 and see what writespeed is possible in camera? Originally posted by RonHendriks1966 RAW: - At iso 5000 files are uge, almost 30 Mb for a single file with no (hood) cap on. In 15 sec. the camera took 31 RAW that where 920 Mb and after 52 seconds the red light was out, giving a filewrite off 17,7 MB/s including all processing. In 60 seconds the K-5 took 58 RAW giving 1,736 Gb of filesspace to fill. The difference of 27 files giving 816 MB to write in 45 seconds -> 18,1 Mb/s I think that is the limitation of the K-5 or my card or the combination. The card is a classe 10 32Gb PQ1 card, and writemax according to the manufacture is 24,5 Mb/s (for what it's word since I haven't tested it myself) with 30 Mb/s readspeed. Basicly it's about creating more file-body then the camera can digest so you can see the difference between processor speed to process and writespeed to the card. Thanks!

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03-01-2011, 03:27 PM	#12
creampuff Veteran Member Join Date: May 2007 Location: Singapore Photos: Gallery Posts: 3,953	Seriously overkill for normal photo taking but definitely handy if you shoot video a lot.

03-01-2011, 03:41 PM	#13
Christine Tham Veteran Member Join Date: Nov 2008 Location: Sydney, Australia Photos: Gallery Posts: 2,269 Original Poster	Originally posted by creampuff Seriously overkill for normal photo taking but definitely handy if you shoot video a lot. I shoot a lot at 7fps and like the buffer to clear as quickly as possible. The Extreme was a lot better than my previous Class 6 card - I'm hoping to get a bit extra with the Extreme Pro.

03-01-2011, 03:45 PM	#14
RonHendriks1966 Banned Join Date: Jan 2009 Photos: Gallery Posts: 9,675	Originally posted by Christine Tham I shoot a lot at 7fps and like the buffer to clear as quickly as possible. I'm hoping to get a bit extra with the Extreme Pro. My thoughts to, a full buffer in RAW takes a real long time to clear, so shortening that time would be great.

03-01-2011, 03:55 PM	#15
qtopplings Senior Member Join Date: Nov 2009 Location: Marin, CA Photos: Gallery \| Albums Posts: 282	Seems like a waste of money to me. It's more than 5X the price of a class 10 card. I've never had a problem with video or the buffer with a standard card, and can wait a second or two if I really tax the card. I guess if you really need it for your job, then it would be worth it.