Expandable ISO

troenaas · 11-12-2013, 01:44 AM

Has the expandable ISO option that was available in K5 been removed in the K3?

I can't find it in the camera menu or the manual.

**wizofoz** · 11-12-2013, 01:45 AM

correct, the range now begins at 100 ISO

Adam · 11-12-2013, 01:50 AM

Originally posted by troenaas

Has the expandable ISO option that was available in K5 been removed in the K3?

I can't find it in the camera menu or the manual.

The K-50/K-500 was the first DSLR to do get rid of the expanded ISO range setting, and the K-3 has followed suit. Now, all ISOs are available by default without having to change any settings (100-51200 on the K-3).

There is no ISO 80 on the K-3. How often did you find yourself needing to do away that extra half stop of light anyway?

topace · 11-12-2013, 04:01 AM

Originally posted by Adam

There is no ISO 80 on the K-3. How often did you find yourself needing to do away that extra half stop of light anyway?

Well, I do sometimes use the K-5 as a light meter for film cameras, and I do sometimes shoot ISO 80 film. But recounting is just a minor inconvenience and the simplicity will benefit many more.

**mattb123** · 11-12-2013, 11:31 AM

I used ISO 80 for moving water at twilight a bit but I can probably get by without it too.

Winder · 11-12-2013, 04:35 PM

All ISO 80 was doing was taking an ISO 100 image and pulling it back down. You can do the same thing in post.

dosdan · 11-12-2013, 05:33 PM

Originally posted by Winder

All ISO 80 was doing was taking an ISO 100 image and pulling it back down. You can do the same thing in post.

No, it was more than that since the DR and other performance indicators, as measured by DxOmark, increased at ISO80.

Further speculations on ISO80 in the K-5 here: https://www.pentaxforums.com/forums/172-pentax-k-3/242260-my-first-impression...ml#post2575454

Dan.

diegosantini · 08-15-2014, 08:55 AM

As i see in DXOmarks Canon's 50ISO are false. It is only 80ISO, instead Pentax is much thruly in ISO metering.

Her Majesty Canon 5D Mark ect ectetera.. at 51200 ISO nominal real sensitivity is ONLY 37000ISO instead Pentax K3 that is 42600.

I prefer a good piece of gear that tell me exactly how the things are instead tell me a lie.

Pentax K-3 versus Canon EOS 6D versus Canon EOS 5D Mark III - Side by side camera comparison - DxOMark

11-12-2013, 01:44 AM	#1
troenaas Pentaxian Join Date: Apr 2009 Location: Norway Photos: Gallery \| Albums Posts: 668	Expandable ISO Has the expandable ISO option that was available in K5 been removed in the K3? I can't find it in the camera menu or the manual.

11-12-2013, 01:50 AM	#3
Adam Administrator Site Webmaster Join Date: Sep 2006 Location: Arizona Photos: Gallery \| Albums Posts: 51,608	Originally posted by troenaas Has the expandable ISO option that was available in K5 been removed in the K3? I can't find it in the camera menu or the manual. The K-50/K-500 was the first DSLR to do get rid of the expanded ISO range setting, and the K-3 has followed suit. Now, all ISOs are available by default without having to change any settings (100-51200 on the K-3). There is no ISO 80 on the K-3. How often did you find yourself needing to do away that extra half stop of light anyway? Adam PentaxForums.com Webmaster (Site Usage Guide \| Site Help \| My Photography) PentaxForums.com server and development costs are user-supported. You can help cover these costs by donating or purchasing one of our Pentax eBooks. Or, buy your photo gear from our affiliates, Adorama, B&H Photo, KEH, or Topaz Labs, and get FREE Marketplace access - click here to see how! Trusted Pentax retailers:

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11-12-2013, 01:45 AM	#2
wizofoz Site Supporter Join Date: Apr 2009 Location: Melbourne, Outer east. Photos: Gallery \| Albums Posts: 1,695	correct, the range now begins at 100 ISO

11-12-2013, 04:01 AM	#4
topace Senior Member Join Date: Sep 2011 Location: Stockholm Posts: 198	Originally posted by Adam There is no ISO 80 on the K-3. How often did you find yourself needing to do away that extra half stop of light anyway? Well, I do sometimes use the K-5 as a light meter for film cameras, and I do sometimes shoot ISO 80 film. But recounting is just a minor inconvenience and the simplicity will benefit many more.

11-12-2013, 11:31 AM	#5
mattb123 Site Supporter Join Date: Apr 2010 Location: Colorado High Country Photos: Gallery Posts: 10,873	I used ISO 80 for moving water at twilight a bit but I can probably get by without it too.

11-12-2013, 04:35 PM	#6
Winder Veteran Member Join Date: Apr 2010 Location: Tennessee Posts: 6,617	All ISO 80 was doing was taking an ISO 100 image and pulling it back down. You can do the same thing in post.

11-12-2013, 05:33 PM	#7
dosdan Pentaxian Join Date: Dec 2007 Location: Brisbane, Australia Photos: Gallery \| Albums Posts: 1,741	Originally posted by Winder All ISO 80 was doing was taking an ISO 100 image and pulling it back down. You can do the same thing in post. No, it was more than that since the DR and other performance indicators, as measured by DxOmark, increased at ISO80. Further speculations on ISO80 in the K-5 here: https://www.pentaxforums.com/forums/172-pentax-k-3/242260-my-first-impression...ml#post2575454 Dan.

08-15-2014, 08:55 AM	#8
diegosantini New Member Join Date: Feb 2014 Posts: 2	As i see in DXOmarks Canon's 50ISO are false. It is only 80ISO, instead Pentax is much thruly in ISO metering. Her Majesty Canon 5D Mark ect ectetera.. at 51200 ISO nominal real sensitivity is ONLY 37000ISO instead Pentax K3 that is 42600. I prefer a good piece of gear that tell me exactly how the things are instead tell me a lie. Pentax K-3 versus Canon EOS 6D versus Canon EOS 5D Mark III - Side by side camera comparison - DxOMark