Forgot Password
Pentax Camera Forums Home
 

Reply
Show Printable Version Search this Thread
08-05-2016, 09:59 AM - 4 Likes   #1
Forum Member




Join Date: May 2016
Location: Hastings UK
Posts: 58
VERY low light K-70 pic

Lots of interest in the low light performance of the K-70 so here's a quick, opportunistic snap from last night with a 100mm WR macro

Handheld 1/6s, F2.8, 1SO 102400!

I can't stress how dark this was. I could see something moving and could tell it was a badger and not a fox but that's all. Focusing was 'random manual' mode - lots of shots with minor adjustments. I didn't want to scare the critter with the focus assist lamp (which seems very bright compared to K30).

The image is as soft and grainy as would be expected but I'm amazed it picked out the colours at all. To the unaided eye this was 'rods only' night vision. The little light there was came from an LED streetlamp some distance away.

Attached Images
 

Last edited by planteater; 08-05-2016 at 10:08 AM.
08-05-2016, 10:08 AM - 2 Likes   #2
amateur dirt farmer...
pepperberry farm's Avatar

Join Date: Dec 2014
Location: probably out in a field somewhere...
Photos: Gallery | Albums
Posts: 5,825
"... if we built a large wooden badger..."


amazing ISO performance!
08-05-2016, 10:11 AM   #3
Moderator
Loyal Site Supporter
BigMackCam's Avatar

Join Date: Mar 2010
Location: North East of England
Posts: 5,533
For ISO 102,400, that is *remarkably* good. I assume that's straight out of camera? With RAW capture, Lightroom would be able to remove that green and magenta chroma noise in the badger's fur. Random focus issues aside, that would then be an amazing result and perfectly usable for small images!

EDIT: If you get a chance, I'd love to see some lowish-light images with shadow areas, taken around ISO 12,800 - 25,600...
08-05-2016, 10:26 AM   #4
MSL
Pentaxian
MSL's Avatar

Join Date: Feb 2012
Location: Greater Toronto Area
Photos: Albums
Posts: 3,359
Truly impressive to focus and capture in such low light. Also interesting to hear about the
QuoteOriginally posted by planteater Quote
'random manual' mode
focusing, as it wasn't a feature I'd heard of yet.

08-05-2016, 10:52 AM   #5
Moderator
Loyal Site Supporter
BigMackCam's Avatar

Join Date: Mar 2010
Location: North East of England
Posts: 5,533
QuoteOriginally posted by MSL Quote
Also interesting to hear about the focusing, as it wasn't a feature I'd heard of yet.
I think that's just manual mode with a the photographer making lens adjustments as they shoot - unless I'm mistaken
08-05-2016, 11:03 AM   #6
Forum Member




Join Date: May 2016
Location: Hastings UK
Posts: 58
Original Poster
QuoteOriginally posted by BigMackCam Quote
I think that's just manual mode with a the photographer making lens adjustments as they shoot - unless I'm mistaken
Yep, exactly that. Basically, I couldn't see what I was doing. Too dark to see anything through the OVF and LV was just a mush of static. The distance scale on the lens is not much use at around 4m either.

Weirdly, it's not obvious from the picture where the focus point is. In daylight that lens would give a narrow DOF at F2.8 which would be clearly visible on the Astroturf. This looks more like a high F number that is diffraction limited. I guess things work differently at ultra low light levels.

Yes, this was jpeg straight out of the camera. I'm kicking myself for not pulling a RAW from the buffer :-(
08-05-2016, 11:07 AM - 1 Like   #7
MSL
Pentaxian
MSL's Avatar

Join Date: Feb 2012
Location: Greater Toronto Area
Photos: Albums
Posts: 3,359
QuoteOriginally posted by BigMackCam Quote
I think that's just manual mode with a the photographer making lens adjustments as they shoot - unless I'm mistaken
And here I'd thought they'd added some magic pixie dust for those cases where the camera can't seem to focus on anything or when the photographer can't hold still and is trying to shoot a 1:1 macro handheld using natural light (my usual protocol)
08-05-2016, 11:08 AM - 3 Likes   #8
Site Supporter
boriscleto's Avatar

Join Date: Dec 2009
Location: Liverpool, NY
Photos: Gallery
Posts: 12,296
QuoteOriginally posted by pepperberry farm Quote
"... if we built a large wooden badger..."


amazing ISO performance!
Runaway!



08-05-2016, 11:20 AM   #9
Moderator
Loyal Site Supporter
BigMackCam's Avatar

Join Date: Mar 2010
Location: North East of England
Posts: 5,533
QuoteOriginally posted by planteater Quote
Weirdly, it's not obvious from the picture where the focus point is.
Looks to me like it's just on the leading edge of that patch of turf in front of the badger?

QuoteOriginally posted by MSL Quote
And here I'd thought they'd added some magic pixie dust for those cases where the camera can't seem to focus on anything or when the photographer can't hold still and is trying to shoot a 1:1 macro handheld using natural light (my usual protocol)
That's one for the K-70II
08-05-2016, 11:27 AM   #10
Forum Member




Join Date: May 2016
Location: Hastings UK
Posts: 58
Original Poster
QuoteOriginally posted by BigMackCam Quote
Looks to me like it's just on the leading edge of that patch of turf in front of the badger?
You're right but I do feel the DOF is somehow deeper than I would expect in bright light.
It does make me think that if I'd nailed the focus and shot RAW this pic could have been pretty decent for web use. Thinking about the owls that sometimes visit........
08-05-2016, 11:39 AM - 1 Like   #11
Moderator
Loyal Site Supporter
BigMackCam's Avatar

Join Date: Mar 2010
Location: North East of England
Posts: 5,533
QuoteOriginally posted by planteater Quote
You're right but I do feel the DOF is somehow deeper than I would expect in bright light.
It does make me think that if I'd nailed the focus and shot RAW this pic could have been pretty decent for web use. Thinking about the owls that sometimes visit........
Difficult to tell on the DOF, I think. The JPEG engine sharpening can make slightly blurred areas look a little more "in focus" than they really are...

I think your K-70 could be an asset for wildlife photography in medium to poor light. I'm impressed
08-06-2016, 02:23 AM   #12
Senior Member




Join Date: Oct 2015
Posts: 216
QuoteOriginally posted by planteater Quote
Lots of interest in the low light performance of the K-70 so here's a quick, opportunistic snap from last night with a 100mm WR macro

Handheld 1/6s, F2.8, 1SO 102400!

I can't stress how dark this was. I could see something moving and could tell it was a badger and not a fox but that's all. Focusing was 'random manual' mode - lots of shots with minor adjustments. I didn't want to scare the critter with the focus assist lamp (which seems very bright compared to K30).

The image is as soft and grainy as would be expected but I'm amazed it picked out the colours at all. To the unaided eye this was 'rods only' night vision. The little light there was came from an LED streetlamp some distance away.
wow, this is really impressive.... will make ISO 12800, & 25600 that much usable.

Also how is the Live view AF?? lot of people are concerned about it is performance.

You can take the A6300 or 80D or 70D as a reference camera.
08-06-2016, 09:48 AM   #13
New Member
cartesio's Avatar

Join Date: Jun 2016
Photos: Gallery
Posts: 22
wow

MANY thanks for that picture!

I think the focus point is on the grass just in front of the badger. The little plant with a yellow flower between the grass and the badger seems a little out of focus.

I am impressed and hungry of other low light pictures.

---------- Post added 06-08-16 at 19:08 ----------

Maybe if you wish you could post a couple of pictures of the same subject in the same light conditions, the first one at 100 ISO and the second one at 25600 or whatever ISO.
08-06-2016, 11:51 AM   #14
Forum Member




Join Date: May 2016
Location: Hastings UK
Posts: 58
Original Poster
QuoteOriginally posted by cartesio Quote

Maybe if you wish you could post a couple of pictures of the same subject in the same light conditions, the first one at 100 ISO and the second one at 25600 or whatever ISO.
I'll try and post some less extreme examples of the K-70 in low light conditions.

If my calculations are correct it would take a 10 minute exposure give the equivalent exposure at ISO 100!

Last edited by planteater; 08-06-2016 at 11:56 AM.
08-06-2016, 02:13 PM   #15
New Member
cartesio's Avatar

Join Date: Jun 2016
Photos: Gallery
Posts: 22
Well, I did not think at getting the same amount of light at different ISOs, that would lead to a VERY long exposure.

I was thinking at taking the same picture with the same exposure time at different ISOs, say 1/100 at ISO 100, then 1/100 at ISO 25600.
Reply

Bookmarks
  • Submit Thread to Facebook Facebook
  • Submit Thread to Twitter Twitter
  • Submit Thread to Digg Digg
Tags - Make this thread easier to find by adding keywords to it!
badger, focus, grass, iso, k-70, k70, light, night, pentax k-70, pictures, post
Thread Tools Search this Thread
Search this Thread:

Advanced Search


Similar Threads
Thread Thread Starter Forum Replies Last Post
Pets Low Light Accidentally High ISO Puppy Pic unkipunki Post Your Photos! 9 05-26-2015 07:41 AM
AF in VERY low light zorza Pentax K-30 & K-50 19 08-10-2013 07:22 AM
very low light k-5 lowlight Pentax K-5 19 04-10-2011 12:42 AM
K-x Q: Light profile varies from pic to pic msharma Troubleshooting and Beginner Help 4 12-10-2010 02:19 PM
People very low-light Halloween shot dgaies Post Your Photos! 5 11-23-2010 01:43 PM



All times are GMT -7. The time now is 06:59 AM. | See also: NikonForums.com, part of our network of photo forums!
  • Red (Default)
  • Green
  • Gray
  • Dark
  • Dark Yellow
  • Dark Blue
  • Old Red
  • Old Green
  • Old Gray
  • Dial-Up Style
Hello! It's great to see you back on the forum! Have you considered joining the community?
register
Creating a FREE ACCOUNT takes under a minute, removes ads, and lets you post! [Dismiss]
Top