Forgot Password
Pentax Camera Forums Home
 

Reply
Show Printable Version Search this Thread
09-16-2016, 02:59 AM   #46
Site Supporter




Join Date: Mar 2009
Location: Gladys, Virginia
Photos: Gallery
Posts: 15,997
Looks good to me. Differences of less than 5 points are probably not visible in real world shooting. Certainly the sensors in the A7r II and D810 are very close in performance to the one in the K-1. Biggest difference is that the A7r II will have a lot better video performance. The A7r II does a little better with regard to dynamic range over iso 3200 situations, but read only a little better. Sony has overstated their iso values as usual, while Pentax has them correctly valued.

I guess the point difference between the K-1 and D810 is due to the dynamic range of 14.6 versus 14.8 at base iso for those cameras respectively and a tiny difference in color depth in favor of the D810.

Big thing is that having features like pixel shift and astro tracer does put the K-1 on top in my book, although if you need faster frame rate or a sports camera, you are probably better off getting a camera that rates lower on the DXO Mark sensor list that actually performs well in those situations.

09-16-2016, 03:20 AM   #47
Pentaxian




Join Date: Jul 2009
Location: Tromsų, Norway
Photos: Albums
Posts: 953
QuoteOriginally posted by D1N0 Quote
They should do a pixel shift run. It should score better on all counts. Also did they weigh the overall score the same as for the Nikons???
If I'm not mistaken combining 4 shots should in theory improve all three subscores by 1 stop/bit/Ev, and thus the total score by 5 points, which should put it on par with 645Z (101). I hope DXOmark will update the review with PS scores so we don't have to speculate if theory and practice correlates.
09-16-2016, 03:36 AM - 2 Likes   #48
Pentaxian
MJSfoto1956's Avatar

Join Date: Dec 2013
Location: Boston
Posts: 1,287
QuoteOriginally posted by pjv Quote
They have not tested a Pentax lens since November 2013, so I would not hold my breath waiting !!
They most certainly have tested many lenses since then -- they just haven't published the results on DxOmark. This suggests that DxOmark has a different business model than DxO labs which may explain why Pentax gets no love.
09-16-2016, 04:09 AM - 2 Likes   #49
Pentaxian




Join Date: Dec 2010
Location: Ontario
Photos: Gallery
Posts: 2,536
QuoteOriginally posted by Simen1 Quote
If I'm not mistaken combining 4 shots should in theory improve all three subscores by 1 stop/bit/Ev, and thus the total score by 5 points, which should put it on par with 645Z (101). I hope DXOmark will update the review with PS scores so we don't have to speculate if theory and practice correlates.
It would be a little funny to have pixel shift improve the 'sports' column score when it's only applicable to shooting baseball* and world class ferret-legging.


*It was a joke. Baseball fans should pretend I typed cricket to avoid offence.

09-16-2016, 04:20 AM   #50
ogl
Pentaxian
ogl's Avatar

Join Date: Dec 2007
Location: Siberia
Photos: Gallery | Albums
Posts: 7,216
QuoteOriginally posted by D1N0 Quote
The k-1 is third in sports score (after only a7s and a7 r II and second in dr (after Nikon D810) and eight in color depth. That kills the score.

They should do a pixel shift run. It should score better on all counts. Also did they weigh the overall score the same as for the Nikons???
The difference is within the margin of error
09-16-2016, 06:58 AM   #51
Pentaxian




Join Date: Jul 2009
Location: Tromsų, Norway
Photos: Albums
Posts: 953
QuoteOriginally posted by BrianR Quote
It would be a little funny to have pixel shift improve the 'sports' column score when it's only applicable to shooting baseball* and world class ferret-legging.
Hehe, that are the sideeffects from testing moving subject photography with a still standing subject.. I struggle to find real world use cases where high ISO pixel shift would be more useful then just lowering the ISO.
09-16-2016, 07:04 AM   #52
Pentaxian
normhead's Avatar

Join Date: Jun 2007
Location: Near Algonquin Park
Photos: Gallery | Albums
Posts: 25,541
Is it just me or are the effects of Pixel Shift pretty spotty? I believe it was Imaging Resources who couldn't get much improvement with a test image even though they gave it the old college try. There seem to be un-explained parameters to getting an improved image with it.
09-16-2016, 07:38 AM   #53
Pentaxian
ffking's Avatar

Join Date: Nov 2015
Location: Poole
Posts: 1,794
QuoteOriginally posted by normhead Quote
Is it just me or are the effects of Pixel Shift pretty spotty? I believe it was Imaging Resources who couldn't get much improvement with a test image even though they gave it the old college try. There seem to be un-explained parameters to getting an improved image with it.
very subjectively - using live view (so mirror up), 2 sec timer, so noi motion from pressing shutter release, zooming in on LCD to focus (using focus peaking aid) ISO 100, rock solid tripod, indoors, high quality lens, static subject - pixel shift gives a noticeably clearer cleaner, sharper-looking image. This drops off in relation to lessening of any of those pre-requisites.


Last edited by ffking; 09-16-2016 at 08:17 AM.
09-16-2016, 07:46 AM   #54
Pentaxian




Join Date: Oct 2013
Posts: 869
QuoteOriginally posted by normhead Quote
Is it just me or are the effects of Pixel Shift pretty spotty? I believe it was Imaging Resources who couldn't get much improvement with a test image even though they gave it the old college try. There seem to be un-explained parameters to getting an improved image with it.
Hi Normhead,

You are right. I have not been able to pin it down but it does seem to vary from shot to shot. Some places the effect is very noticeable, in other situations, you can barely see it. I guess in a way, it is a testament to how the sensor is in the first place.
09-16-2016, 07:51 AM   #55
Veteran Member
MJKoski's Avatar

Join Date: Aug 2016
Posts: 772
It requires rock solid support. Anything moves or vibrates and the output is at best about the same as normal exposure. Before that focus must be nailed. Forget AF with PS.
09-16-2016, 08:03 AM   #56
Site Supporter




Join Date: Mar 2009
Location: Gladys, Virginia
Photos: Gallery
Posts: 15,997
QuoteOriginally posted by normhead Quote
Is it just me or are the effects of Pixel Shift pretty spotty? I believe it was Imaging Resources who couldn't get much improvement with a test image even though they gave it the old college try. There seem to be un-explained parameters to getting an improved image with it.
I guess I would say that pixel shift requires a scene that is pretty static and obviously a camera with a solid base. If things are moving around at all, then motion correction just substitutes the first image meaning that you are just getting a single image for those parts of the scene.

If I go out early in the morning with a sharp lens and its a still day, pixel shift gives me a base file with amazing latitude with regard to processing ability. If I see that there is even a light breeze blowing, I don't even try and just shoot single low iso images (which are pretty good in themselves).
09-16-2016, 08:21 AM - 1 Like   #57
Pentaxian
normhead's Avatar

Join Date: Jun 2007
Location: Near Algonquin Park
Photos: Gallery | Albums
Posts: 25,541
QuoteOriginally posted by MJKoski Quote
In Finland the prices for lenses are so ridiculous that Canon 5D4 with few good L-lenses equals K-1 kit with new d-fa zooms. And the new Canon is now in the same ballbark as Sony ff-cameras in terms of performance.

Of these two it is the Canon which wins in my book thanks to supreme selection of special lenses like the WA T-SE and excellent 90mm T-SE.

Easy to joke about Canon but they have all use cases covered and if/when ML firmware hits mk4 it leaves all others eating dust in terms of features. Display gain alone is worth it.
At least for you it's worth it. Others may not agree. My guess is, that if you are a working pro, with a really good income, and you need one of the specialty lenses Canon supports, then it's good deal. However, for the average guy, cost is still an issue. From my perspective, the Canon shooters I see all the time have something I don't. Really good high paying jobs and lots of disposable income. But for the average guy, if you can't afford the high end gear Pentax is a much better option. All I hear when i read posts like that is "I'm rich beyond your wildest dreams and i can buy whatever I want."

Selection is only a factor, if you actually partake of that selection. If Pentax gear covers your needs, knowing there's all kinds of specialty gear available from Canon makes no difference at all.

I also find it odd, when folks talk about Canon specialty lenses, to one of my Canon user buddies, when I'm able to drop my 40XS and 21 ltd. into a small case and stick it in my pocket constitutes specially gear. Small portable equipment that can go anywhere and produce superb images. Pentax has some niche products that if Canon had them would be promoted as special lenses. The fact that you would treasure what Canon does well, and not mention the things Pentax does well, that Canon doesn't, means your post is somewhat biased right off the bat. Simple fact, Canon does more of what Pentax doesn't do, but Pentax does some things Canon doesn't do such as affordable WR, in body SR and Pixel shift and still has stop more DR than the best Canon, compared, best model to best model. If those things Pentax does are up your alley, as in my case, "Canon does more specialty lenses" is just "blah , blah, blah".

In my experience, of the 20 or so guys I casually hang out with from time to time, 3 Canon shooters have switched to Nikon recently because of the DR in their landscape issues. So I see this as a really big thing for Canon. Most of the guys I shoot with have never changed brands and are happy to shoot with what they started with... except for Canon shooters. Just like Pentax lost users over AF speed and no FF, one of which has been rectified, Canon lost shooters over lack of Dynamic Range. At least in my neck of the woods. And since my K-5 still has as good DR as any Canon made, the K-1 appeals to me because it's an improvement over the K-5. I'm not interested in new gear to get the same as what I have.

Last edited by normhead; 09-16-2016 at 08:36 AM.
09-16-2016, 09:17 AM   #58
Loyal Site Supporter
monochrome's Avatar

Join Date: Mar 2008
Location: Kirkwood (St. Louis) MO
Photos: Gallery | Albums
Posts: 20,325
While I think this is an interesting discussion, the only test that matters to me is my test. I am at once perfecttly unbiased (I have absolutely no opinion about any other camera) and completely biased (I believe, in advance, I want no other camera).
09-16-2016, 10:25 AM   #59
Junior Member




Join Date: Jul 2016
Location: Washington DC
Posts: 45
QuoteOriginally posted by biz-engineer Quote
Excellent ! Yeah , 3280 ISO sport and 96 grade, that's pretty good, among the top full frame performers. I want to check the color accuracy. I don't know if that the lenses I use or the sensor , but the colors I get from the K1 aren't exactly the ones I would like to see.
I have been having the same issues. Lightroom does not like K1 colors. I've tried Huelight and made my own profiles which is an improvement but yellows/greens just always seem a little off.
09-16-2016, 10:32 AM   #60
Pentaxian




Join Date: Feb 2015
Photos: Albums
Posts: 3,458
QuoteOriginally posted by clackers Quote
I have a Spyder Express.
yes ,thanks, that's a good idea to order to santa claus.
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!
24x36mm, a7r, brightness, cameras, d810, dslr, dxo, dxo mark tests, ev, full frame, full-frame, ii, iso, k-1, k1, nikon, noise, pentax, pentax k-1, relationship, sensor, shutter, tests the pentax
Thread Tools Search this Thread
Search this Thread:

Advanced Search


Similar Threads
Thread Thread Starter Forum Replies Last Post
Pentax lenses and DXO Mark bpv_UW Pentax SLR Lens Discussion 21 06-07-2015 07:08 PM
DxO Mark data for lenses on the K-5 II and K-5 IIs Matchete Pentax SLR Lens Discussion 5 01-31-2014 08:53 AM
DXO Tests MX-1, Same Results as Q PenTX Pentax Q 4 03-02-2013 05:44 AM
DxO Mark K-5ii comparison photoman1 Pentax DSLR Discussion 35 12-03-2012 09:14 PM
Looking forward to the K-01 DxO sensor tests... Unsinkable II Pentax K-01 5 02-08-2012 09:41 AM



All times are GMT -7. The time now is 01:08 PM. | See also: NikonForums.com, CanonForums.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