K-1 vs K-1 Mk II comparison request : underexposure

6BQ5 · 04-30-2018, 02:40 PM

Can someone with both a K-1 and K-1 Mk II photograph a scene and underexpose it by -2 and then adjust the exposure back to 0 in post processing? I'd like to see the difference in noise levels between the two cameras in this situation. Let's add some stress and use a higher ISO, like 6400.

Thanks!

stevebrot · 04-30-2018, 03:25 PM

You should probably also ask for a non-underexposed photo at ISO 6400 from each camera as well to establish comparison of baseline exposure.

Steve

biz-engineer · 04-30-2018, 04:19 PM

Originally posted by 6BQ5

K-1 vs K-1 Mk II comparison request : underexposure

I would bet that exposure doesn't change noise reduction, supposedly a linear process. But I may be wrong of course.

6BQ5 · 04-30-2018, 08:05 PM

Originally posted by biz-engineer

I would bet that exposure doesn't change noise reduction, supposedly a linear process. But I may be wrong of course.

Hmmm.... the signal levels coming out of the image sensor will be lower and closer to the levels of noise. Will the accelerator be able to distinguish image data from the noise floor? If yes then I should have rather clean, dark images that will be easy to brighten, add contrast to, etc. But, what if the accelerator strips the image along with the noise? Then I will have a pale gray image I can't rescue.

That's the question I want to see answered.

MJKoski · 05-01-2018, 12:54 AM

The way I saw it when playing around with fur test target is that noise reduction gets stronger in the shadow areas of image. More detail is smeared away. Very unclever trick for RAW shooting, quite okay for OOC JPG.

Sure, I cannot compare without mk1. But someone else could do it.

biz-engineer · 05-01-2018, 01:35 AM

Originally posted by MJKoski

More detail is smeared away. Very unclever trick for RAW shooting, quite okay for OOC JPG.

In the end it's always bad bad and bad :-) photography is such a depressing thing to be involved in.

Kunzite · 05-01-2018, 02:09 AM - **1 Like**

Oh, the joy of buying a new camera, waiting for its arrival, impatiently unboxing it and then... obsessively trying to see what it's bad at.

MJKoski · 05-01-2018, 02:37 AM - **2 Likes**

That is purely your view on the matter. I always check basic operation limits before hiking 60km to the middle of nowhere in order to get a photo or two. Lloyd Chambers asks money for these tests, this is free with obvious noise from Pentax high priests in between trying to drag heretics into the pyre.

Tan68 · 05-01-2018, 03:21 AM

Originally posted by biz-engineer

In the end it's always bad bad and bad :-) photography is such a depressing thing to be involved in.

pixel picking

stevebrot · 05-01-2018, 08:32 AM

Originally posted by MJKoski

this is free with obvious noise from Pentax high priests in between trying to drag heretics into the pyre

More the pillory than the pyre...

Steve

Kunzite · 05-01-2018, 09:25 AM

Originally posted by MJKoski

That is purely your view on the matter. I always check basic operation limits before hiking 60km to the middle of nowhere in order to get a photo or two. Lloyd Chambers asks money for these tests, this is free with obvious noise from Pentax high priests in between trying to drag heretics into the pyre.

Amusing. Appeal to ridicule, everyone's retort when they're caught red handed.
How about... trying to be reasonable, for a change?

MJKoski · 05-01-2018, 09:45 AM

That is perfectly reasonable. Go get your mk2 and push the shadows. You will notice that going above ISO400 there is not much to push.

reh321 · 05-01-2018, 09:51 AM

Originally posted by MJKoski

That is perfectly reasonable. Go get your mk2 and push the shadows. You will notice that going above ISO400 there is not much to push.

So, you have established that the K-1 meets your needs - that you have no need for a 'mk ii'

6BQ5 · 05-01-2018, 09:56 AM

So ... can someone show how shadows can be pulled up in a K-1 II vs a regular K-1?

Please?

stevebrot · 05-01-2018, 10:11 AM

Originally posted by 6BQ5

So ... can someone show how shadows can be pulled up in a K-1 II vs a regular K-1?

Please?

Why do that when it is sooooo much easier to send the thread down a rabbit hole?

Steve

04-30-2018, 02:40 PM	#1
6BQ5 Veteran Member Join Date: Jun 2013 Location: Nevada, USA Photos: Albums Posts: 3,348	K-1 vs K-1 Mk II comparison request : underexposure Can someone with both a K-1 and K-1 Mk II photograph a scene and underexpose it by -2 and then adjust the exposure back to 0 in post processing? I'd like to see the difference in noise levels between the two cameras in this situation. Let's add some stress and use a higher ISO, like 6400. Thanks!

04-30-2018, 03:25 PM	#2
stevebrot Otis Memorial Pentaxian Join Date: Mar 2007 Location: Vancouver (USA) Photos: Gallery \| Albums Posts: 42,007	You should probably also ask for a non-underexposed photo at ISO 6400 from each camera as well to establish comparison of baseline exposure. Steve Last edited by stevebrot; 05-01-2018 at 10:13 AM. Reason: clarity

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
For Sale - Sold: “L” Bracket K-3, K3 Mk.II, K5, K5 MkII, K5 Mk.IIs.or K-7 (Reduced from $75)	oneill	Sold Items	1	03-27-2018 05:52 PM
K-5 vs MZ-S vs LX vs PZ-1p vs ist*D vs K10D vs K20D vs K-7 vs.......	Steelski	Pentax K-5 & K-5 II	2	06-28-2017 04:59 PM
Comparison Request: K-1 in crop mode vs. K-5 IIs	geomez	Pentax DSLR Discussion	9	05-07-2016 08:45 PM
Comparison of the K-5 Mk II and the 5D Mk III	Docrwm	Pentax K-5 & K-5 II	9	09-24-2012 07:40 PM
Camera comparison: One X vs Galaxy S II vs Nexus vs N8 vs iPhone 4S	jogiba	Canon, Nikon, Sony, and Other Camera Brands	3	04-12-2012 07:41 AM

04-30-2018, 04:19 PM	#3
biz-engineer Pentaxian Join Date: Feb 2015 Photos: Gallery Posts: 12,247	Originally posted by 6BQ5 K-1 vs K-1 Mk II comparison request : underexposure I would bet that exposure doesn't change noise reduction, supposedly a linear process. But I may be wrong of course.

04-30-2018, 08:05 PM	#4
6BQ5 Veteran Member Join Date: Jun 2013 Location: Nevada, USA Photos: Albums Posts: 3,348 Original Poster	Originally posted by biz-engineer I would bet that exposure doesn't change noise reduction, supposedly a linear process. But I may be wrong of course. Hmmm.... the signal levels coming out of the image sensor will be lower and closer to the levels of noise. Will the accelerator be able to distinguish image data from the noise floor? If yes then I should have rather clean, dark images that will be easy to brighten, add contrast to, etc. But, what if the accelerator strips the image along with the noise? Then I will have a pale gray image I can't rescue. That's the question I want to see answered.

05-01-2018, 12:54 AM	#5
MJKoski Veteran Member Join Date: Aug 2016 Posts: 1,784	The way I saw it when playing around with fur test target is that noise reduction gets stronger in the shadow areas of image. More detail is smeared away. Very unclever trick for RAW shooting, quite okay for OOC JPG. Sure, I cannot compare without mk1. But someone else could do it.

05-01-2018, 01:35 AM	#6
biz-engineer Pentaxian Join Date: Feb 2015 Photos: Gallery Posts: 12,247	Originally posted by MJKoski More detail is smeared away. Very unclever trick for RAW shooting, quite okay for OOC JPG. In the end it's always bad bad and bad :-) photography is such a depressing thing to be involved in.

05-01-2018, 02:09 AM - 1 Like	#7
Kunzite Pentaxian Join Date: Apr 2007 Location: Romania Posts: 15,132	Oh, the joy of buying a new camera, waiting for its arrival, impatiently unboxing it and then... obsessively trying to see what it's bad at.

05-01-2018, 02:37 AM - 2 Likes	#8
MJKoski Veteran Member Join Date: Aug 2016 Posts: 1,784	That is purely your view on the matter. I always check basic operation limits before hiking 60km to the middle of nowhere in order to get a photo or two. Lloyd Chambers asks money for these tests, this is free with obvious noise from Pentax high priests in between trying to drag heretics into the pyre.

05-01-2018, 03:21 AM	#9
Tan68 Veteran Member Join Date: Sep 2014 Photos: Albums Posts: 501	Originally posted by biz-engineer In the end it's always bad bad and bad :-) photography is such a depressing thing to be involved in. pixel picking

05-01-2018, 08:32 AM	#10
stevebrot Otis Memorial Pentaxian Join Date: Mar 2007 Location: Vancouver (USA) Photos: Gallery \| Albums Posts: 42,007	Originally posted by MJKoski this is free with obvious noise from Pentax high priests in between trying to drag heretics into the pyre More the pillory than the pyre... Steve

05-01-2018, 09:25 AM	#11
Kunzite Pentaxian Join Date: Apr 2007 Location: Romania Posts: 15,132	Originally posted by MJKoski That is purely your view on the matter. I always check basic operation limits before hiking 60km to the middle of nowhere in order to get a photo or two. Lloyd Chambers asks money for these tests, this is free with obvious noise from Pentax high priests in between trying to drag heretics into the pyre. Amusing. Appeal to ridicule, everyone's retort when they're caught red handed. How about... trying to be reasonable, for a change?

05-01-2018, 09:45 AM	#12
MJKoski Veteran Member Join Date: Aug 2016 Posts: 1,784	That is perfectly reasonable. Go get your mk2 and push the shadows. You will notice that going above ISO400 there is not much to push.

05-01-2018, 09:51 AM	#13
reh321 Pentaxian Join Date: Nov 2014 Location: South Bend, IN, USA Photos: Gallery \| Albums Posts: 23,185	Originally posted by MJKoski That is perfectly reasonable. Go get your mk2 and push the shadows. You will notice that going above ISO400 there is not much to push. So, you have established that the K-1 meets your needs - that you have no need for a 'mk ii'

05-01-2018, 09:56 AM	#14
6BQ5 Veteran Member Join Date: Jun 2013 Location: Nevada, USA Photos: Albums Posts: 3,348 Original Poster	So ... can someone show how shadows can be pulled up in a K-1 II vs a regular K-1? Please?

05-01-2018, 10:11 AM	#15
stevebrot Otis Memorial Pentaxian Join Date: Mar 2007 Location: Vancouver (USA) Photos: Gallery \| Albums Posts: 42,007	Originally posted by 6BQ5 So ... can someone show how shadows can be pulled up in a K-1 II vs a regular K-1? Please? Why do that when it is sooooo much easier to send the thread down a rabbit hole? Steve