K-5, ISO12800 Practical Portrait (Part 3)...

Started Oct 19, 2010 | Discussions
JohnBee
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K-5, ISO12800 Practical Portrait (Part 3)...
Oct 19, 2010

Following the last example, it was pointed out by a number of people that the lighting may have contributed to the final IQ of the sample. Therefore, I have just received permission from dgaies to release a low light sample at the same sensitivity.

To which I think should put to rest any/and all doubt that the K-5 is indeed a serious low light performer

UNPROCESSED RAW: ISO12800, 1/80s

FULL SIZE:   http://www.bertin.ca/tmp/K-5/ISO/K5_1033_RAW.jpg

-

PROCESSED RAW: ISO12800, 1/80s

PROCESSED RAW CROP: ISO12800, 1/80s

As with the previous sample, this was processed with minimal NR(single pass) and very little PP. In a word... Amazing!

I would also like to take this opportunity to thank our good man dgaies who has gone far out of his way to provide us with these wonderful samples! - So thanks buddy! we couldn't have done this without you(literally :p).

...the end

dgaies
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Re: K-5, ISO12800 Practical Portrait (Part 3)...
In reply to JohnBee, Oct 19, 2010

johnbee wrote:

I would also like to take this opportunity to thank our good man dgaies who has gone far out of his way to provide us with these wonderful samples! - So thanks buddy! we couldn't have done this without you(literally :p).

No problem, glad to help out.

Also, FYI, the shot was taken with the FA77 @ f/2.8, 1/80s, ISO 12800 (in case anyone was wondering about the lens and/or aperture).

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Gmbal
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Re: K-5, ISO12800 Practical Portrait (Part 3)...
In reply to JohnBee, Oct 19, 2010

Impressive!

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Younes
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Re: K-5, ISO12800 Practical Portrait (Part 3)...
In reply to Gmbal, Oct 19, 2010

What's your NR software?
--
Younes ( Paris, FR)
K100D, 70-300,18-55

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JohnBee
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Re: K-5, ISO12800 Practical Portrait (Part 3)...
In reply to Younes, Oct 19, 2010

Younes wrote:

What's your NR software?

I used Topaz Denoise

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SpartanWarrior
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Re: K-5, ISO12800 Practical Portrait (Part 3)...
In reply to JohnBee, Oct 19, 2010

Again excellent but you need to also set the chroma noise to 0 so we can see what it is like in this lighting.

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JohnBee
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Re: K-5, ISO12800 Practical Portrait (Part 3)...
In reply to SpartanWarrior, Oct 19, 2010

SpartanWarrior wrote:

Again excellent but you need to also set the chroma noise to 0 so we can see what it is like in this lighting.

Sorry, the full size unprocessed RAW link wasn't working.
It has all noise present and accounted for
The link should be working now btw.

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laurynas
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Re: K-5, ISO12800 Practical Portrait (Part 3)...
In reply to JohnBee, Oct 19, 2010

it's working, but looks like a file with ACR chroma reduction

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SpartanWarrior
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Re: K-5, ISO12800 Practical Portrait (Part 3)...
In reply to JohnBee, Oct 19, 2010

Thanks looks great;)

johnbee wrote:

SpartanWarrior wrote:

Again excellent but you need to also set the chroma noise to 0 so we can see what it is like in this lighting.

Sorry, the full size unprocessed RAW link wasn't working.
It has all noise present and accounted for
The link should be working now btw.

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SpartanWarrior
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Re: K-5, ISO12800 Practical Portrait (Part 3)...
In reply to laurynas, Oct 19, 2010

I kind of think he reduced it a little.

laurynas wrote:

it's working, but looks like a file with ACR chroma reduction

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coleviolin
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K-r again... (the little engine that could) :)
In reply to JohnBee, Oct 19, 2010

I must say this sample is awesome, and the quality from that FA 77 shines!

At first I thought the K-5 might have close to 1 stop advantage over the K-r,
and that very well could be true, but then I noticed that the "crops" you've
shared are de-noised from RAW, and the "full size" sample is quite small,
about 640 pixels? So I tried that too with the K-r just now, and here's what
I got out of camera JPG with the DA 40 (not quite the FA 77). All in all, for
a 4x6 print, the 12800 ISO and even 25600 is definitely usable. I don't
know how large I could print from this, but in any case it's amazing!

-- hide signature --

Lipo

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JohnBee
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Re: K-5, ISO12800 Practical Portrait (Part 3)...
In reply to SpartanWarrior, Oct 19, 2010

SpartanWarrior wrote:
I kind of think he reduced it a little.

laurynas wrote:

it's working, but looks like a file with ACR chroma reduction

Double checked the file, all NR settings are 0.
Which is about as RAW as RAW can be on my end

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JohnBee
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Re: K-r again... (the little engine that could) :)
In reply to coleviolin, Oct 19, 2010

That is one CUTE kid!!!

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moving_comfort
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Re: K-5, ISO12800 Practical Portrait (Part 3)...
In reply to JohnBee, Oct 19, 2010

NOW you're talkin'!

Looks very unprocessed, natural... in other words, quite good. I'm impressed.

Some of the other examples weren't really telling me much because of the lighting, or because they actually looked over-processed.

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SpartanWarrior
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Re: K-5, ISO12800 Practical Portrait (Part 3)...
In reply to JohnBee, Oct 19, 2010

You should know better you did it, still looks great;)

johnbee wrote:

SpartanWarrior wrote:
I kind of think he reduced it a little.

laurynas wrote:

it's working, but looks like a file with ACR chroma reduction

Double checked the file, all NR settings are 0.
Which is about as RAW as RAW can be on my end

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moving_comfort
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77ltd on the k-5?
In reply to dgaies, Oct 19, 2010

dgaies wrote:

johnbee wrote:

I would also like to take this opportunity to thank our good man dgaies who has gone far out of his way to provide us with these wonderful samples! - So thanks buddy! we couldn't have done this without you(literally :p).

No problem, glad to help out.

Also, FYI, the shot was taken with the FA77 @ f/2.8, 1/80s, ISO 12800 (in case anyone was wondering about the lens and/or aperture).

.

Here's the $64K question for me - what was AF lock like with the 77 on the K-5? Be honest & brutal, please, because that's my favorite lens, but I almost hate shooting it on the K20d in very low light because of the hunting sequences.

.

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Irek J
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Re: K-5, ISO12800 Practical Portrait (Part 3)...
In reply to JohnBee, Oct 19, 2010

Great!

Now, every Pentax body I have used is total cr*p

Just kidding...the K-5 is unbelievable in the image quality department...I'll need to count my pennies!

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JohnBee
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Re: K-5, ISO12800 Practical Portrait (Part 3)...
In reply to SpartanWarrior, Oct 19, 2010

SpartanWarrior wrote:

You should know better you did it, still looks great;)

I don't quite follow what you're saying tbh.
The image was taken by dgaies,(Pentax Forum member) and processed by myself.

However... on my end of things, there is 0 NR added to the unprocessed RAW. Which was the intent all along. However, ACR initially extracted a RAW with default chroma NR. Which has since been corrected and should reflect by committing a hard refresh in your browser.

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SpartanWarrior
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Re: K-5, ISO12800 Practical Portrait (Part 3)...
In reply to JohnBee, Oct 19, 2010

John that is what I meant, you should know because you did process it, looks great;)

johnbee wrote:

SpartanWarrior wrote:

You should know better you did it, still looks great;)

I don't quite follow what you're saying tbh.
The image was taken by dgaies,(Pentax Forum member) and processed by myself.

However... on my end of things, there is 0 NR added to the unprocessed RAW. Which was the intent all along. However, ACR initially extracted a RAW with default chroma NR. Which has since been corrected and should reflect by committing a hard refresh in your browser.

 SpartanWarrior's gear list:SpartanWarrior's gear list
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emoticana
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Re: K-5, ISO12800 Practical Portrait (Part 3)...
In reply to JohnBee, Oct 19, 2010

wow, that's impressive

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