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12-12-2013, 09:13 AM   #1
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K-3 ISO3200 and above?

Thought this might be an interesting topic after seeing this thread on FM: Life Above ISO 3200 - FM Forums
Could folks w/ the K-3 please post shots in dim light at ISO3200 and above...preferably at least ISO5000? Be sure to mention what NR you did if any and post a few w/o any NR...

12-12-2013, 09:18 AM   #2
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See the OP... ISO 9000 https://www.pentaxforums.com/forums/172-pentax-k-3/244940-sharpness-k-3-totally-sucks.html
12-12-2013, 09:28 AM   #3
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Well I haven't done any proper work with that hi iso, but my impression is that the K-5 is a little bit better, but even on the K-5 it degrades fast with iso going up from iso4000.
12-12-2013, 10:54 AM   #4
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Here's a few from a derby bout a while back, not fantastic but certainly usable.








EDIT: Also just noticed the last one is only ISO 2000, but it, and most of the others were pushed about a stop in post.


Last edited by Mareket; 12-12-2013 at 11:31 AM.
12-12-2013, 12:59 PM - 1 Like   #5
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This is iso 6400:


12-12-2013, 01:43 PM - 3 Likes   #6
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If K5 can shoot at 20,000 ISO, then K3, which i don't have, can be boosted farther as well :-)

K5 at 20,000 iso from play Dracula by Key City Public Theatre, Port Townsend, WA
1/125s, f3.2, iso 20,000, lens 50-135, handheld, used NR from LR, 10/5/2011, later printed at 12"x18" and looked great.

A fog machine was used during this scene.

12-12-2013, 01:59 PM   #7
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I find that high ISO shots are much cleaner when combined with natural light and proper exposure

Cheers

Randy
12-12-2013, 02:02 PM   #8
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QuoteOriginally posted by Mareket Quote
Here's a few from a derby bout a while back, not fantastic but certainly usable.
Excellent shooting. More amazing to me is that the location allows roller skates to be run on their basketball court.
There is no way any athletic director in the US would ever let a wheel roll on their precious hardwood court!

12-12-2013, 02:17 PM   #9
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QuoteOriginally posted by philbaum Quote
K5 at 20,000 iso from play Dracula.....
Wow !
12-12-2013, 02:29 PM   #10
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QuoteOriginally posted by philbaum Quote
A fog machine was used during this scene.
The fog machine was very complementary to high ISO rendering. The looks on the actresses' faces, combined with the colors and your strong framing make this shot look so artful.

M
12-12-2013, 02:47 PM - 1 Like   #11
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QuoteOriginally posted by crewl1 Quote
Excellent shooting. More amazing to me is that the location allows roller skates to be run on their basketball court.
There is no way any athletic director in the US would ever let a wheel roll on their precious hardwood court!
So many schools have been closed due to declining enrolment, many turned into community centres…

K-3 at 3200 ISO…, noisey, but better than not having the image.
12-12-2013, 05:05 PM   #12
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I haven't done much high-ISO yet with the K-3, but this simple test was ISO 6400, shot in very dim street lighting (f3.5, 1/25 second, handheld). Looking at the enlarged image on the computer, I was very impressed with the retained detail of all the text and images on the noticeboard. No specific NR, aside from minimal Lightroom luminance NR. I don't anticipate the K-3 having any problems at all working well above ISO 3200.




The K-x and K-5 were also never afraid of ISO 3200 or above, of course.

K-x ISO 4000 (1/25, ƒ/5.6, 55 mm)



K-5 ISO 6400 (1/100, ƒ/1.6, 50 mm)



K-5 ISO 25600 (1/500, ƒ/2.8, 83 mm)



You certainly don't need fancy Nikons to work OK above ISO 3200.

Last edited by rawr; 12-12-2013 at 05:13 PM.
12-12-2013, 06:15 PM   #13
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QuoteOriginally posted by Transit Quote
Wow !
QuoteOriginally posted by Miguel Quote
The fog machine was very complementary to high ISO rendering. The looks on the actresses' faces, combined with the colors and your strong framing make this shot look so artful.

M
Thanks for the comments, at the time, i had considered printing to a 20x30, but the amount of NR i used ruled out any more enlargement. I do a lot of rehearsal shots for these folks, and was lucky enough to catch these 2 in this position, in subsequent performances they came off the stairs in a different way, which was not as artsy.
12-14-2013, 09:49 PM   #14
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Here's a shot done at ISO 3200 lit with a 60 watt (equiv) cfl bulb - coming from film cameras, that blows me away. 50mm f1.4 M, maybe wide open or 1.8, I don't quite recall.



Last edited by phreon; 12-15-2013 at 10:15 AM.
12-15-2013, 09:26 PM   #15
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QuoteOriginally posted by slip Quote
I find that high ISO shots are much cleaner when combined with natural light and proper exposure

Cheers

Randy
You are correct. High ISO in good light is better than same high ISO in bad light (assuming the pictures have similar exposure because of speed and aperture). But it is interesting that people usually ignore the ambient light when comparing the high ISO shots.

Below are some night shots from a soccer field with very poor lightning system. Even with high ISO, I need to increase EV in LightRoom. Don't forgot to mention that K-3 focus system still works very well, thought.

1/ F/1.8, 1/200 sec, ISO 5000, LR +1.2 EV.


2/ F/1.8, 1/200 sec, ISO 6400, LR +0.36 EV.


3/ F/1.8, 1/200 sec, ISO 5000, LR + 0.83 EV.
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