Forgot Password
Pentax Camera Forums Home
 

Reply
Show Printable Version Search this Thread
03-24-2011, 02:29 PM   #1
Junior Member




Join Date: Jul 2009
Location: minnesota
Posts: 37
SD Cards

With all the different classes for SD cards, the question is will they work in all cameras or does the camera have to have firmware update to accept a new class? I'm sure this has come up before but could not find the thread.

03-24-2011, 02:34 PM   #2
Site Supporter
Vylen's Avatar

Join Date: Dec 2008
Location: Sydney, Australia
Photos: Gallery
Posts: 1,248
You'd only have to worry about whether or not you need to upgrade your firmware (or even if you can) is when changing from SD to SDHC to SDXC.

For example, I think it was the K200D that needed a firmware update to go from SD to SDHC.

Meanwhile, the K-5 needed a firmware update to accept SDXC. Unfortunately older cameras can't get a firmware update to use SDXC since they don't have the hardware to support the standard.

You don't need firmware updates to use different speed Classes in standards you can already use. For example, if you're using Class 6 cards, you're free to use Class 10... and Class 12 (if they were to come out with one tomorrow). The Classes for these cards just indicate the the theoretical maximum write/read speed they're capable of, which doesn't effect your camera - apart from making it speedy or fast, depending on what you buy
03-24-2011, 02:40 PM   #3
Junior Member




Join Date: Jul 2009
Location: minnesota
Posts: 37
Original Poster
Thanks. and thanks for a quick reply.
03-24-2011, 04:52 PM   #4
Senior Member




Join Date: Mar 2011
Location: Windsor, Colorado
Posts: 196
QuoteOriginally posted by Vylen Quote
The Classes for these cards just indicate the the theoretical maximum write/read speed they're capable of, which doesn't effect your camera - apart from making it speedy or fast, depending on what you buy
That's not correct. The classes designate the minimum sustained write speed. Though there is a lot of variability within brands in general.....and also how each brand might perform in a particular camera. So the "theoretical" part of your statement still rings true in many cases.


Last edited by ccd333; 03-24-2011 at 04:59 PM.
03-24-2011, 06:08 PM   #5
Veteran Member
Reportage's Avatar

Join Date: Feb 2009
Photos: Gallery
Posts: 739
would be a lot easier if the read/write speed of the buffer was revealed.
03-24-2011, 09:59 PM   #6
hcc
Pentaxian
hcc's Avatar

Join Date: Nov 2009
Location: Brisbane, Australia
Photos: Gallery | Albums
Posts: 3,482
QuoteOriginally posted by Reportage Quote
would be a lot easier if the read/write speed of the buffer was revealed.
Speaking of the K-7, the write-up speed of the camera buffer is very fast, much faster than a class 10 (30 Mb/s) card, provided that you switch off all in-camera PP.

I did a number of test with hi bursts (5 fps) and I could never fault the buffer. each time, the problem the card being to slow to write up the files, or some in-camera PP that slowed down the camera CPU.

Food for thoughts...
03-26-2011, 01:15 PM   #7
Forum Member




Join Date: Nov 2009
Location: United States
Photos: Gallery
Posts: 50
Does the K-7 perform any better (in continuous or video mode) with 30 mb/s than with 20 mb/s SDHC cards(e.g. Extreme Sandisk III vs II) ? Or is the SD-X II as fast as the processor can use to any advantage ? There is a big cost bump from class 6 to class 10 so I want to know if there is any practical gain ? Thanks...
03-27-2011, 03:31 PM   #8
Senior Member
HEEGZ's Avatar

Join Date: Jun 2010
Location: Missouri
Photos: Albums
Posts: 258
QuoteOriginally posted by atown Quote
Does the K-7 perform any better (in continuous or video mode) with 30 mb/s than with 20 mb/s SDHC cards(e.g. Extreme Sandisk III vs II) ? Or is the SD-X II as fast as the processor can use to any advantage ? There is a big cost bump from class 6 to class 10 so I want to know if there is any practical gain ? Thanks...
I did a quick informal test using my old class 4 Kingston 4GB card and noticed that during continuous shooting the shots slowed down pretty quick. I bought two class 10 SanDisk extreme 8GB cards and have had zero issues with shooting FPS or movies. I have never owned or used a class 6 card, but if I were to buy one for my K7 it would be a SanDisk extreme, they are awesome cards.

I imagine that you should be okay with a class 6 SanDisk extreme for up to a dozen shots of continuous shooting JPEGS, and any movie issues would be at the highest quality settings. This may not be the case though, so hopefully someone can help you out. If neither of those are important to you than you should be fine. However, the fact that you are asking these questions means you are probably like me and would be better off with a class 10 card. It's money well spent IMHO.

Reply

Bookmarks
  • Submit Thread to Facebook Facebook
  • Submit Thread to Twitter Twitter
  • Submit Thread to Digg Digg
Tags - Make this thread easier to find by adding keywords to it!
camera, cards, dslr, photography, sd
Thread Tools Search this Thread
Search this Thread:

Advanced Search


Similar Threads
Thread Thread Starter Forum Replies Last Post
Which SD cards are right for *ist DL turay Pentax Camera and Field Accessories 3 11-27-2010 09:15 PM
For Sale - Sold: My CF cards for your SD cards (US/CAN) Matt Miller Sold Items 2 11-26-2010 06:19 AM
SD Cards in Japan esman7 General Talk 4 11-05-2009 04:44 AM
Possible SD Cards Issue WCMans Pentax DSLR Discussion 6 10-06-2009 01:02 PM
2+GB cards in k100d grunt doc Troubleshooting and Beginner Help 24 09-02-2009 04:46 PM



All times are GMT -7. The time now is 07:21 AM. | See also: NikonForums.com, part of our network of photo forums!
  • Red (Default)
  • Green
  • Gray
  • Dark
  • Dark Yellow
  • Dark Blue
  • Old Red
  • Old Green
  • Old Gray
  • Dial-Up Style
Hello! It's great to see you back on the forum! Have you considered joining the community?
register
Creating a FREE ACCOUNT takes under a minute, removes ads, and lets you post! [Dismiss]
Top