Forgot Password
Pentax Camera Forums Home
 

Reply
Show Printable Version Search this Thread
11-08-2010, 09:57 PM   #1
Senior Member




Join Date: Mar 2010
Posts: 230
ISO 100: Expanded vs Native

Is there any real world difference between the expanded (K-x / K-r) and the native (K-7, etc) ISO 100?

And is the expanded ISO 100 perceptibly better that the native ISO 200?

Thanks in advance

11-09-2010, 12:13 AM   #2
Veteran Member
mysticcowboy's Avatar

Join Date: Apr 2009
Location: port townsend, wa
Photos: Albums
Posts: 968
I have not found the expanded 100 ISO any better than shooting a native resolution of 200. It's nice to have if you want to smooth water or wind, but you'll have a difficult time seeing any differences otherwise.
11-09-2010, 01:50 AM   #3
Pentaxian
gazonk's Avatar

Join Date: Feb 2009
Location: Oslo area, Norway
Photos: Gallery | Albums
Posts: 3,509
QuoteOriginally posted by GrinMode Quote
And is the expanded ISO 100 perceptibly better that the native ISO 200?
I don't have the K-x, but according to DxOmark, you get 0.6 EV more DR at ISO 100, so in theory, for "one shot HDR" type images, you have a little more room at ISO 100 (in fact, according to DxO again, ISO 100 DR on the K-x is quite close to ISO 200 on the K-5).
11-09-2010, 02:56 AM   #4
Site Supporter
kiwi_jono's Avatar

Join Date: Dec 2009
Location: Christchurch, New Zealand
Photos: Gallery | Albums
Posts: 1,035
On my K-x I see quite a lot of difference between ISO100 and 200.

ISO100 is significantly cleaner in the shaddow areas.

11-09-2010, 03:24 AM   #5
Senior Member




Join Date: Mar 2010
Posts: 230
Original Poster
Thanks for all your replies.

I actually compared the K-x, K-r, and K-7 in DXOMark. The expanded 100 scores better than the K-7's native 100.

But I'll just put on record that I'm not bashing the K-7 here, and I'd like to consider what the others are saying about the DXOMark's (in?)significance in real world scenarios.

I had googled about it and I found some info about expanded ISO (the lower range) actually reduces DR. But maybe it does not matter much with the K-x and K-r's very good DR.

I'm still on the fence between a K-7 and K-r

Thanks again.
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, dslr, iso, photography
Thread Tools Search this Thread
Search this Thread:

Advanced Search


Similar Threads
Thread Thread Starter Forum Replies Last Post
What does expanded ISO really mean for Pentax? Clinton Pentax DSLR Discussion 28 09-20-2010 12:42 AM
expanded iso...and green/af/ae-l buttons... grinchicago Troubleshooting and Beginner Help 4 04-22-2010 03:06 AM
iso expanded for k-x? LosHollyBeach Troubleshooting and Beginner Help 7 03-05-2010 09:33 AM
K7 Native ISO brofkand Pentax DSLR Discussion 9 01-16-2010 04:13 PM
How do expanded ISO ranges work? Eruditass Pentax DSLR Discussion 3 09-30-2009 02:54 AM



All times are GMT -7. The time now is 01:18 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