Forgot Password
Pentax Camera Forums Home
 

Reply
Show Printable Version Search this Thread
10-03-2009, 10:07 AM   #31
ogl
Pentaxian
ogl's Avatar

Join Date: Dec 2007
Location: Siberia
Photos: Gallery | Albums
Posts: 7,254
K-7 review at DPReview and DR/noise.ATTN: GordonBGood and Oleg_V: Pentax SLR Talk Forum: Digital Photography Review

Please, pay attention

10-03-2009, 10:44 AM   #32
Veteran Member
falconeye's Avatar

Join Date: Jan 2008
Location: Munich, Alps, Germany
Photos: Gallery
Posts: 6,863
QuoteOriginally posted by ogl Quote
Please, pay attention
Funny that you ask for physicists there

BTW, IEC 62220-1 is a norm written by physicists to measure noise. It is applied to x-ray photography where it does really matter as increasing the luminosity is killing people ...

This is a good description but it is in German:
ISS: DQE

You may find similiarly good descriptions in other languages when googling for the IEC standard.


BTW, dynamic range and noise are closely related but one cannot exactly be computed from the other. The reason for this is that noise isn't entirely shot noise. For shot noise only, it would be true. Also, both are meaningless measures if defined on the pixel scale.
10-03-2009, 10:53 AM   #33
ogl
Pentaxian
ogl's Avatar

Join Date: Dec 2007
Location: Siberia
Photos: Gallery | Albums
Posts: 7,254
Me? I know Oleg_V. But this thread is not mine.
10-03-2009, 11:17 AM   #34
Veteran Member
falconeye's Avatar

Join Date: Jan 2008
Location: Munich, Alps, Germany
Photos: Gallery
Posts: 6,863
QuoteOriginally posted by ogl Quote
Me? I know Oleg_V. But this thread is not mine.
Sorry, I thought, your were yana36. My apologies

10-03-2009, 07:16 PM   #35
ogl
Pentaxian
ogl's Avatar

Join Date: Dec 2007
Location: Siberia
Photos: Gallery | Albums
Posts: 7,254
QuoteOriginally posted by falconeye Quote
Sorry, I thought, your were yana36. My apologies
Somebody said it here, because I made "copy-paste" of yana36's posts from dpreview forum sometimes.
10-03-2009, 09:41 PM   #36
Veteran Member
mickey's Avatar

Join Date: Oct 2008
Location: Japan
Photos: Gallery | Albums
Posts: 1,074
Overall a positive review for the K-7.
Worth the wait...finally.

Like falk wrote though, what's with the K20/D50/D300 noise comparison test, and where was it for the actual K20D review?

Very suspicious...
10-04-2009, 05:23 AM   #37
wll
Veteran Member




Join Date: Nov 2006
Location: Mission Hills, CA
Posts: 773
QuoteOriginally posted by mickey Quote
Overall a positive review for the K-7.
Worth the wait...finally.

Like falk wrote though, what's with the K20/D50/D300 noise comparison test, and where was it for the actual K20D review?

Very suspicious...
K20D review was last year. This review makes me very happy I have K20D's and not the new K-7. K20D was and is a pretty good camera as shown by the K-7 review.

I think Pentax's next generation of DSLR's will be a big leap forward. I don't see Hoya as a me too camera company.


wll
10-04-2009, 07:49 AM   #38
Pentaxian
thibs's Avatar

Join Date: Jun 2007
Location: Belgium
Photos: Albums
Posts: 5,267
QuoteOriginally posted by wll Quote
K20D review was last year. This review makes me very happy I have K20D's and not the new K-7.
Mmmm? Why? Except the sensor, just everything is better. And quite better. I can testify.

QuoteOriginally posted by wll Quote
K20D was and is a pretty good camera as shown by the K-7 review.
Of course it was, and still is. There's nothing wrong with the K20D. The K-7's arrival doesn't make the previous camera a bad one. Not at all.

10-04-2009, 03:42 PM   #39
Veteran Member
GLXLR's Avatar

Join Date: Feb 2009
Location: Sugar Land, TX
Photos: Gallery
Posts: 686
QuoteOriginally posted by wowtip Quote
Good review. Maybe "Value" and "Ergonomics" should be a notch or two higher.

I wish they would release Digital Camera Utility 4 for older bodies.

Looking at ISO800 samples full screen, I am a bit confused that K-7 (and K20D) looks to have much more contrast and saturation than D300 or 50D. Did they shoot in vivid mode or what?
I agree, even the D300 got a 9.0 value when it was released for $2000...

JPEG engine for the k-7 adds a lot of contrast and saturation. That's why I shoot RAW!
10-04-2009, 09:27 PM   #40
ogl
Pentaxian
ogl's Avatar

Join Date: Dec 2007
Location: Siberia
Photos: Gallery | Albums
Posts: 7,254
QuoteOriginally posted by thibs Quote
Mmmm? Why? Except the sensor, just everything is better. And quite better. I can testify.



Of course it was, and still is. There's nothing wrong with the K20D. The K-7's arrival doesn't make the previous camera a bad one. Not at all.
The sensor is better too. And with new technology
DSLR Image Sensor Innovation ? Who Is Challenging Canon and Nikon?s lead? - Chipworks Inside Angle | Blog on Semiconductor International
10-07-2009, 09:56 AM   #41
Inactive Account




Join Date: Sep 2008
Location: Slovenia
Photos: Gallery
Posts: 279
I'm just curious ... did they upgrade the K-7 firmware before testing or was the review done on 1.0? I'm asking because I'm very impressed with the K-7 and not at all with the 50D (let's leave the D300 aside because I haven't had much experience with that camera).

I like the K-7 noise handling and really like the resolution/detail even tho at first the pictures taken with the K-7 seemed a bit soft (forgot to take into account that the pictures are bigger now).

@ogl
Is it true about the K-7 noise handling in RAW (starts at ISO1600)? Because I was sure you can change that in the settings and can set it to start NR at ISO200 and up or turn it off completely. I'm sure that setting works for both JPG and RAW.
Or are you talking about default settings where high ISO NR starts at ISO1600?
04-03-2010, 09:35 PM   #42
m8o
Veteran Member
m8o's Avatar

Join Date: Jul 2007
Location: 40-55'-44" N / 73-24'-07" W [on LI]
Photos: Gallery | Albums
Posts: 3,102
I thought it worth noting, DPR recently updated their rating system quite dramatically. K-7 went from 'Highly Recommended' to 74%. How do you go from 'highly recommended' to 'sub-par' [which I consider to be 74%] without changing the basis for the conclusion at all??
04-04-2010, 12:28 AM   #43
Veteran Member
starbase218's Avatar

Join Date: Sep 2009
Location: Planet Earth, Sol system, Milky Way galaxy, Universe
Posts: 1,118
QuoteOriginally posted by m8o Quote
I thought it worth noting, DPR recently updated their rating system quite dramatically. K-7 went from 'Highly Recommended' to 74%. How do you go from 'highly recommended' to 'sub-par' [which I consider to be 74%] without changing the basis for the conclusion at all??
Maybe DPR does consider 74% to be highly recommended. Have you cross-referenced other camera reviews?
04-04-2010, 06:31 AM   #44
Banned




Join Date: Sep 2006
Location: Millstone,NJ
Posts: 6,491
QuoteOriginally posted by m8o Quote
I thought it worth noting, DPR recently updated their rating system quite dramatically. K-7 went from 'Highly Recommended' to 74%. How do you go from 'highly recommended' to 'sub-par' [which I consider to be 74%] without changing the basis for the conclusion at all??
DPR gave the Canon 550D/T2i 77% or DPR Gold Award.
Canon EOS 550D / Rebel T2i Review: 29. Conclusion: Digital Photography Review
04-04-2010, 07:21 AM   #45
Veteran Member




Join Date: Mar 2010
Posts: 527
DPreview Qualitytests
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!
k-7, pentax news, pentax rumors, review
Thread Tools Search this Thread
Search this Thread:

Advanced Search


Similar Threads
Thread Thread Starter Forum Replies Last Post
Pentax K-x review on Dpreview emr Pentax News and Rumors 61 04-08-2010 10:14 AM
DA* 55mm F1.4 review on dpreview turbosaturn Pentax News and Rumors 144 08-14-2009 07:52 PM
Timeframe for full dpreview.com review? jfsavage Photographic Technique 4 05-27-2009 09:17 PM
K200D review on DPREVIEW is out ogl Pentax News and Rumors 6 09-04-2008 03:48 AM
K200D review up on dpreview! jsherman999 Pentax DSLR Discussion 27 09-03-2008 06:49 PM



All times are GMT -7. The time now is 05:52 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