Forgot Password
Pentax Camera Forums Home
 

Reply
Show Printable Version Search this Thread
02-07-2014, 08:33 PM   #1
Senior Member




Join Date: Aug 2010
Location: Leeds
Posts: 152
K01 v K5 noise

I have heard on many occasions that the Pentax K-01 is essentially a K5 in a smaller body, without the mirror, and so just assumed this was the case.

However, I was just comparing noise of the Olympus OMD E-M5 with Pentax cameras here:
Olympus OM-D E-M5 Review: Digital Photography Review

But I was surprised to see that the K5 seems noticeably better than the K-01 (and K30).

So is it just not true that the K-01 is a K5 in a smaller body without the mirror?

02-07-2014, 08:44 PM   #2
Moderator
Site Supporter
MarkJerling's Avatar

Join Date: May 2012
Location: Wairarapa, New Zealand
Photos: Gallery | Albums
Posts: 5,190
QuoteOriginally posted by rob_k20d Quote
I have heard on many occasions that the Pentax K-01 is essentially a K5 in a smaller body, without the mirror, and so just assumed this was the case.

However, I was just comparing noise of the Olympus OMD E-M5 with Pentax cameras here:
Olympus OM-D E-M5 Review: Digital Photography Review

But I was surprised to see that the K5 seems noticeably better than the K-01 (and K30).

So is it just not true that the K-01 is a K5 in a smaller body without the mirror?
Some sources say it's the "same" sensor. Others say the sensor is "very nearly the same" between the K-01 and the K-5. Perhaps the algorithms in the firmware make for different results?
02-07-2014, 08:46 PM   #3
Site Supporter




Join Date: Sep 2011
Posts: 1,241
They are not the same cameras K5 is far superior in many ways
higher color bit rate
faster shutterspeed
weather sealed
wider expanded iso
faster cont. shooting
greater exp comp
better flash
flash sync port
wired remote port
greater controls
and so on

Last edited by Sliver-Surfer; 02-07-2014 at 08:57 PM.
02-07-2014, 08:47 PM   #4
Pentaxian
VisualDarkness's Avatar

Join Date: Nov 2011
Location: Uppsala, Sweden
Photos: Gallery
Posts: 4,439
Pentax themselves stated that the "Prime-M is a lower ISO engine than the one in the K-5" but with an enhanced user experience. Still, I double that there is any visible difference in 99.9% of the cases.

02-07-2014, 10:27 PM   #5
Pentaxian




Join Date: Nov 2008
Location: Bangalore
Photos: Gallery
Posts: 2,435
I sold my K-5 else I would have posted a direct comparison but based on my experience, I doubt you will notice any difference in RAW IQ till reasonably high ISO say ISO 1600 or 3200. May be over that K-5 will have slight advantage due to 14-bit output vs 12-bit RAW of K-01.

Update: I curiously looked at DXO after posting above and interestingly, as per their SNR chart, K-01 seems a little better at manufacture specified ISO starting ISO 1600. Not sure why, a possible reason could be that the measured ISO is slight different between K-01 & K-5.

http://www.dxomark.com/Cameras/Compare/Side-by-side/Sony-NEX-6-versus-Pentax...___832_783_676

Go to measurements -> SNR

Last edited by yusuf; 02-07-2014 at 10:35 PM.
02-08-2014, 04:21 AM   #6
Loyal Site Supporter




Join Date: Mar 2009
Location: Southern Indiana
Photos: Gallery
Posts: 14,951
They are the same at high iso. The differences are visible to my eye at low iso (80), where the dynamic range on the K5 is better, but at high iso I couldn't tell the difference between the files.
02-08-2014, 07:35 AM   #7
Pentaxian
RonHendriks1966's Avatar

Join Date: Jan 2009
Photos: Gallery
Posts: 8,556
In jpg the Olympus is very well, but with RAW the Pentax wins. So far as I know the K-5 still wins when it comes to iso 3200 and up starting developing from RAW.
02-08-2014, 04:48 PM - 1 Like   #8
Pentaxian
Na Horuk's Avatar

Join Date: Feb 2012
Location: Slovenia, probably
Photos: Gallery | Albums
Posts: 10,325
There are two reasons, I think
1) Sony may changed the sensor throughout its production run. So even if it is labelled the same, there might be small tweaks and improvements. Someone mentioned that Sony does this with its SD cards - even if its the same label/series, the individual cards might be made out of parts from different bins, which affects their performance.
2) Every camera brand does something to the sensor. The sensor might have different filters in front of it, are hooked up to different circuits (different buffer, CPU, which limits bit depth), data interpretation, etc. I think I even read somewhere that the camera body can affect the amount of noise, depending on its thickness and materials

Keep in mind also that even if you shoot raw, its not necessarily raw. In this day and age, the raw data itself gets interpreted a little. Compression is the most obvious example, but it should have no effect. Some cameras have "quiet" NR built into the raw files, and there was debate about in-raw sharpening. I wouldn't be surprised if other things are also done to the raw. Its not as raw as we think. Not to mention jpegs, which are basically a playground for the engineers! Everything from WB, colour calibation, lens corrections, NR,.. list goes on

Oh, and the K-5 has higher bit rate, which is also why the K-5II couldn't get the upgraded CPU. The K-01 and K-30 have that processor, which is faster, but doesn't allow such high bit depth. This is also why the K-5II doesn't have focus peaking, and has different video capabilities - only the newer processor would allow it.

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!
body, e-m5, ise, k-01, k01, k01 v k5, k5, mirror, mirrorless, noise, olympus, pentax, pentax k-01, review
Thread Tools Search this Thread
Search this Thread:

Advanced Search


Similar Threads
Thread Thread Starter Forum Replies Last Post
Blue Tit K3 v K5 Blythman Pentax K-3 13 11-09-2013 02:40 PM
K5 Silver v. Black - Worth How Much $ GlennG Pentax K-5 16 09-28-2013 11:52 AM
Selling k5 after using k01 Shihaochew Pentax K-01 42 02-25-2013 11:41 AM
K01 'white noise' static sound from inside camera footloosiety Troubleshooting and Beginner Help 4 12-02-2012 11:12 AM
K01 have similar color/pattern moire as K5 IIs? lanx0003 Pentax K-01 14 11-24-2012 04:59 AM



All times are GMT -7. The time now is 12:27 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