Forgot Password
Pentax Camera Forums Home
 

Reply
Show Printable Version Search this Thread
02-05-2014, 09:52 PM - 2 Likes   #1
Pentaxian
Wired's Avatar

Join Date: Aug 2009
Location: Edmonton, AB
Photos: Gallery | Albums
Posts: 2,494
4 cameras, 6400 iso

Just for fun, and for my own knowledge I took 4 photos using 4 cameras, all set up on auto white balance, f1.8, 1/50" and 6400 iso (exception is the Q7 with f1.9)

The cameras and lenses?

Pentax Q7 - 01 Prime

Pentax K3 - FA 31mm f1.8

Pentax K5 - FA 31mm f1.8

Nikon D800 - Zeiss 50mm f1.4

all resized to 1500 pixels @ 300ppi

The results:

Q7
Q7


K3


K5


D800

ignore the focus on different points, the idea is the analyse the high iso affect on color, noise, and other bad stuff.



My opinion?

Why did they ever allow you to push 6400 on the Q7. pretty much useless image. Might be able to save it with a lot of post processing and a B&W conversion.

The K3 has more noise than the other DSLR's as seen on the camera body and out of focus areas. However it does render detail cleaner.

The K5 white balance seems to be different than the K3 and the D800 for some reason even though it's set to Auto like the other two... I prefer this image out of the Pentax's. The noise is better controlled and smoother than the K3, but with the trade off of fine details.

The D800 handles noise the best (expected) retaining the fine details.

EDIT:

By request I reshot test images of the K3 and K5 images, this time of my lens shelf instead of the D800, thinking the various details in 3 different lenses may showcase a bit differently. The light is coming from an older ikea desk lamp 10 feet away through a promaster 22" diffuser disc. Lens is once again a Pentax DA 31mm f1.8. Camera settings: Auto WB, center point AF locked onto the "M" of Pentax-M 75-150, 6400 iso, f2.0, 1/125"


Pentax K3


Pentax K5



to further mess things up:


K3 iso 8,000


K5 iso 8,000


K3 iso 10,000


K5 iso 10,000


K3 iso 12,800


K5 iso 12,800


Last edited by Wired; 02-06-2014 at 11:31 PM. Reason: updated images
02-05-2014, 09:55 PM   #2
Loyal Site Supporter
Canada_Rockies's Avatar

Join Date: Nov 2007
Location: Sparwood, BC, Canada
Photos: Gallery | Albums
Posts: 9,142
K-3 and D800 seem best with the K-5 quite close behind.
02-05-2014, 10:06 PM   #3
Pentaxian




Join Date: Nov 2008
Location: Bangalore
Photos: Gallery
Posts: 2,435
QuoteOriginally posted by Canada_Rockies Quote
K-3 and D800 seem best with the K-5 quite close behind.
to me, k-5 looks a bit better than k-3, just that focusing points are different.
02-05-2014, 10:09 PM   #4
Pentaxian
EarlVonTapia's Avatar

Join Date: Oct 2012
Location: Vancouver
Photos: Gallery
Posts: 1,150
The K5 shot looks really really good. The K3 seems really grainy in the OOF areas, whereas the D800 and the K5 get smoother results.

02-05-2014, 10:30 PM   #5
Veteran Member




Join Date: Jun 2010
Location: Manteca, CA
Photos: Gallery | Albums
Posts: 1,653
I will agree with the OP that the K-3 renders detail far better. I would be interested to see how much detail it renders vs the K-5 after PP noise removal.

edit : I also think the K-3 did better with White balance.
02-05-2014, 10:39 PM   #6
Veteran Member




Join Date: Mar 2008
Location: outer eastern melbourne, australia
Posts: 357
not for the first time, i quite like the k3 noise or "grain". i dont demand zero noise at iso6400, sometimes i think it's preferable.

i find it hard to evaluate the actual pictures due to the differing focus points. eg - comparing detail retention in specific area's relative to another. But the k5 once again shows just how good it is for an apsc sensor.. and so my tooing and froing re k3 or k5iis continues on, lol.

the D800 looks good, but i'm not changing systems to it's kinda irrelevant to me.

and if you think the Q7 is bad, i shudder to think how my Q would fare, lol.


as an aside, i assume all shots were taken in Raw with NR turned off?
02-05-2014, 10:41 PM   #7
Pentaxian
Wired's Avatar

Join Date: Aug 2009
Location: Edmonton, AB
Photos: Gallery | Albums
Posts: 2,494
Original Poster
All raw now nr applies yea. The focus point thing was a oversight that shouldn't have happened :P
02-05-2014, 10:51 PM   #8
Veteran Member




Join Date: Jun 2010
Location: Manteca, CA
Photos: Gallery | Albums
Posts: 1,653
This thread pretty much just made my mind up for me. The sheer detail loss of the K-5 makes it a no brainer. I can pull noise out in PP but I can not pull detail out that isnt there. All the talk about how good the K-5 (II/IIs) is lately has made me question weather or not the K-3 was worth my money. I still think the K-5 is a great camera but it isnt nearly a K-3, as it shouldnt be.

02-05-2014, 11:01 PM   #9
Pentaxian
gazonk's Avatar

Join Date: Feb 2009
Location: Oslo area, Norway
Photos: Gallery | Albums
Posts: 3,509
Oh! The K-3 is too noisy for me. Which detail loss are you complaining about on the K-5? It's hard to tell if there's detail loss in the grip, since it's OOF on the K-5 but not on the K-3.

(Now I understand why my daughter doesn't want to go over ISO 800 on her NEX-7, while I don't hesitate to use 1600 or 3200 on my K-5)
02-05-2014, 11:06 PM   #10
Veteran Member




Join Date: Jun 2010
Location: Manteca, CA
Photos: Gallery | Albums
Posts: 1,653
QuoteOriginally posted by gazonk Quote
Oh! The K-3 is too noisy for me. Which detail loss are you complaining about on the K-5? It's hard to tell if there's detail loss in the grip, since it's OOF on the K-5 but not on the K-3.

(Now I understand why my daughter doesn't want to go over ISO 800 on her NEX-7, while I don't hesitate to use 1600 or 3200 on my K-5)
I think in this example being OOF isnt the issue, even where the K-3 is OOF it still has far more detail than the k-5. It really looks like the k-5 has smoothed out the noise so much its washed the detail out. I do like the noise control but I would rather have noise and detail than no noise and muddy detail.
02-05-2014, 11:17 PM   #11
Pentaxian
gazonk's Avatar

Join Date: Feb 2009
Location: Oslo area, Norway
Photos: Gallery | Albums
Posts: 3,509
I'm not quite sure how you can tell that. It would have be interesting to compare the K-3 and the K-5 with the focus point on the grip.
02-05-2014, 11:19 PM   #12
Veteran Member




Join Date: Jun 2010
Location: Manteca, CA
Photos: Gallery | Albums
Posts: 1,653
Wired, what would it take to get a side by side @ the same focal point?
02-05-2014, 11:30 PM - 1 Like   #13
Pentaxian
Wired's Avatar

Join Date: Aug 2009
Location: Edmonton, AB
Photos: Gallery | Albums
Posts: 2,494
Original Poster
QuoteOriginally posted by j2photos Quote
Wired, what would it take to get a side by side @ the same focal point?

Not much, I did the original in five minutes. Tomorrow after work I'll redo the shoot focusing on the grip.
02-05-2014, 11:46 PM   #14
Veteran Member




Join Date: May 2008
Location: SF Bay Area
Posts: 417
The K5 @ 6400 look stunning though. Looks like one could get away with minimal PP on JPEGs. D800 is ofcourse expected to beat the crowd. K3 looks to be a disappointment w.r.t high ISO.
In all fairness the K5@6400, the background is OOF but even if it were in focus, K5 might just still reign supreme in APSC bodies.
Can you try LR5 NR on the K3 @6400? That might help us see just how much details are retained after an acceptable PP on K3 high ISO shots.
02-05-2014, 11:47 PM   #15
Pentaxian
i83N's Avatar

Join Date: Mar 2009
Location: Lithuania
Photos: Gallery
Posts: 1,144
K5 has les washed out colors than K3, but les detail. Than colors and noise you can correct in PP, details not so much.
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!
31mm, camera, cameras, d800, dslr, f1.8, fa, iso, k-3, k3, k5, pentax, photography, q7
Thread Tools Search this Thread
Search this Thread:

Advanced Search


Similar Threads
Thread Thread Starter Forum Replies Last Post
Black & White K-5 IIs ISO 6400 Eric Auer Post Your Photos! 3 11-14-2013 10:07 AM
Night 6400 iso westmill Post Your Photos! 7 10-17-2012 02:06 PM
K-30 ISO 6400 shots treebeard Pentax K-30 & K-50 14 09-25-2012 03:44 PM
Photos: K-5 at ISO 6400 AND ISO 12,800 PeterKBurian Pentax K-5 2 01-07-2011 07:01 AM
Black & White Portrait of Stripes (Super-Takumar 50/1.4 @ ISO 6400) Dubesor Post Your Photos! 2 09-17-2010 05:56 AM



All times are GMT -7. The time now is 10:15 PM. | 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