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ddharriman · 08-09-2016, 06:24 AM - **1 Like**

The Squirrel Mafia · 08-09-2016, 07:44 AM

I just post processed some ISO 12800, 25600, & 51200 RAW samples from the K-70 & K-3II in RawTherapee.

The K-70 seems to control false coloring a bit better, but the K-3II produces a finer sand like grain. You'll get better colors at the slight cost of fine detail with the K-70 or you'll get better detail out of the K-3II at the cost of false coloring with the K-3II. You give up one thing for another.

I'd set the ISO range from 100 to 25600 on the K-70 & manually shoot up to ISO 51200 in a pinch.

I'd set the ISO range from 100 to 12800 on the K-3II & manually shoot up to ISO 25600 in a pinch.

I think Pentax has a high ISO IQ winner here. Hopefully the next Pentax APS-C flagship does the same or slightly better. I want the build, speed, controls, & options of the flagship series.

**BigMackCam** · 08-09-2016, 10:12 AM

Originally posted by The Squirrel Mafia

I'd set the ISO range from 100 to 12800 on the K-3II & manually shoot up to ISO 25600 in a pinch.

That's pretty much how I use the K-3 and K-3II, though I'm not too concerned about bumping up to 25,600 depending on the circumstances, as colour is still generally well-controlled. +25 colour and anything up to +15 luminance noise reduction allows for decent viewing sizes with nothing more than a bit of unobjectionable grain.

In a real pinch, even ISO 51,200 has it's uses, but you need to work harder in post-processing as colours become more problematic. Even so, you can get a usable image... the below test shot was taken just now on the K-3 at ISO 51,200 in my garage, with its dim lighting... even with some noise reduction it's grainy, but passable.

Apologies to the OP - this thread is about the K-70, which clearly has excellent, improved high ISO capability - but we shouldn't forget what the K-3 and K-3II are capable of...

reh321 · 08-09-2016, 10:21 AM - **1 Like**

Originally posted by BigMackCam

That's pretty much how I use the K-3 and K-3II, though I'm not too concerned about bumping up to 25,600 depending on the circumstances, as colour is still generally well-controlled. +25 colour and anything up to +15 luminance noise reduction allows for decent viewing sizes with nothing more than a bit of unobjectionable grain.

In a real pinch, even ISO 51,200 has it's uses, but you need to work harder in post-processing as colours become more problematic. Even so, you can get a usable image... the below test shot was taken just now on the K-3 at ISO 51,200 in my garage, with its dim lighting... even with some noise reduction it's grainy, but passable.

Apologies to the OP - this thread is about the K-70, which clearly has excellent, improved high ISO capability - but we shouldn't forget what the K-3 and K-3II are capable of...

And hopefully within the next month Pentax will announce a K-3iii which applies K-70 advances to the K-3ii
{I figure they're saving some kind of announcement for Photokina}

**BigMackCam** · 08-09-2016, 10:28 AM

Originally posted by reh321

And hopefully within the next month Pentax will announce a K-3iii which applies K-70 advances to the K-3ii

That would be special

08-09-2016, 06:24 AM - 1 Like	#1
ddharriman Pentaxian Join Date: Feb 2009 Photos: Gallery Posts: 345	Imaging Resource Pentax K-70 ISO samples Pentax K-70 Review: Preview - Samples

08-09-2016, 10:12 AM	#3
BigMackCam Digitiser of Film Join Date: Mar 2010 Location: North East of England Posts: 20,704	Originally posted by The Squirrel Mafia I'd set the ISO range from 100 to 12800 on the K-3II & manually shoot up to ISO 25600 in a pinch. That's pretty much how I use the K-3 and K-3II, though I'm not too concerned about bumping up to 25,600 depending on the circumstances, as colour is still generally well-controlled. +25 colour and anything up to +15 luminance noise reduction allows for decent viewing sizes with nothing more than a bit of unobjectionable grain. In a real pinch, even ISO 51,200 has it's uses, but you need to work harder in post-processing as colours become more problematic. Even so, you can get a usable image... the below test shot was taken just now on the K-3 at ISO 51,200 in my garage, with its dim lighting... even with some noise reduction it's grainy, but passable. Apologies to the OP - this thread is about the K-70, which clearly has excellent, improved high ISO capability - but we shouldn't forget what the K-3 and K-3II are capable of... Attached Images

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08-09-2016, 07:44 AM	#2
The Squirrel Mafia Pentaxian Join Date: Jan 2015 Posts: 3,058	I just post processed some ISO 12800, 25600, & 51200 RAW samples from the K-70 & K-3II in RawTherapee. The K-70 seems to control false coloring a bit better, but the K-3II produces a finer sand like grain. You'll get better colors at the slight cost of fine detail with the K-70 or you'll get better detail out of the K-3II at the cost of false coloring with the K-3II. You give up one thing for another. I'd set the ISO range from 100 to 25600 on the K-70 & manually shoot up to ISO 51200 in a pinch. I'd set the ISO range from 100 to 12800 on the K-3II & manually shoot up to ISO 25600 in a pinch. I think Pentax has a high ISO IQ winner here. Hopefully the next Pentax APS-C flagship does the same or slightly better. I want the build, speed, controls, & options of the flagship series.

08-09-2016, 10:21 AM - 1 Like	#4
reh321 Pentaxian Join Date: Nov 2014 Location: South Bend, IN, USA Photos: Gallery \| Albums Posts: 23,186	Originally posted by BigMackCam That's pretty much how I use the K-3 and K-3II, though I'm not too concerned about bumping up to 25,600 depending on the circumstances, as colour is still generally well-controlled. +25 colour and anything up to +15 luminance noise reduction allows for decent viewing sizes with nothing more than a bit of unobjectionable grain. In a real pinch, even ISO 51,200 has it's uses, but you need to work harder in post-processing as colours become more problematic. Even so, you can get a usable image... the below test shot was taken just now on the K-3 at ISO 51,200 in my garage, with its dim lighting... even with some noise reduction it's grainy, but passable. Apologies to the OP - this thread is about the K-70, which clearly has excellent, improved high ISO capability - but we shouldn't forget what the K-3 and K-3II are capable of... And hopefully within the next month Pentax will announce a K-3iii which applies K-70 advances to the K-3ii {I figure they're saving some kind of announcement for Photokina}

08-09-2016, 10:28 AM	#5
BigMackCam Digitiser of Film Join Date: Mar 2010 Location: North East of England Posts: 20,704	Originally posted by reh321 And hopefully within the next month Pentax will announce a K-3iii which applies K-70 advances to the K-3ii That would be special

Imaging Resource Pentax K-70 ISO samples

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