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10-16-2010, 09:52 AM   #31
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QuoteOriginally posted by Alo´s Quote
Except for a better AF and a better body I don't need to change my K-x ?
The low ISO photos will also likely be better, and the movie mode, and basically everything else. But if you enjoy your K-x why upgrade at all?

10-16-2010, 09:56 AM   #32
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I would say if you crave all the features of the K7 but retaining the KX (or slightly better) sensor then get the K5.

If you have a K20/K7 by all means take the step up and get the improved ISO and AF. I can say if KX is similar to 7d (which is looks to be) then its a large step up in ISO performance. The DR is most likely going to be better on the K5 than 7d as well if we make a assumption based off the KX sensor.
10-16-2010, 09:58 AM   #33
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QuoteOriginally posted by Recercare Quote
I was puzzled about the low res. lcd-display when the K-x was released. I didn't expect 920k but something like 460k. I mean, 230K is used on budget p&s.
Yeah I keep looking for the DOS prompt on mine. It's that neaderthal.

10-16-2010, 10:19 AM   #34
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QuoteOriginally posted by Ira Quote

I'd like to see some of those handheld HDR shots. I've tried them on my K-x, and if I'm careful, one out of ten comes out okay.

Can it accomplish this because of the faster FPS, or is there another factor as well?

I would really like that capability if it worked nice.
Yes the K-5 and the K-R have this Hand-held HDR feature.

You may know there are several PC-based HDR PP software (I forgot the names) which are capable (up to a certain extent) of lining up several handheld shots for HDR processing. They all work by mathematical algorithms which can recognise that the slightly shifted images are actually the same scene, and align them back again before blending.
Pentax has likely obtained the license to build some of this into the camera on-board software itself.
Its not perfect, and you still need to hold the camera reasonably steady.

The new dSLRs are practically computers which just happen to take photographs as well

10-16-2010, 10:51 AM   #35
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tsammyc, please redo the test with both cameras on Manual mode and the same shutter speed, aperture and exposure compensation. Also the same in camera contrast/noise reduction/etc

The way they are right now (the Kx being overexpose because of the diffrent shutter speed) is not very convincing for a versus.

Thank you
10-16-2010, 11:11 AM   #36
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QuoteOriginally posted by raz Quote
tsammyc, please redo the test with both cameras on Manual mode and the same shutter speed, aperture and exposure compensation. Also the same in camera contrast/noise reduction/etc

The way they are right now (the Kx being overexpose because of the diffrent shutter speed) is not very convincing for a versus.

Thank you
also, please provide jpeg and RAW images.

change the parameters in the custom image settings, NR level set to off. shoot under LV to pinpoint focus area. do test under controlled environment, one under strong or sufficient lighting, one under tungsten (low/poor) lighting and the last one under almost no light or no light at all.

note: Noise handling by the sensor is better tested or shown under dark conditions.

no offense to the OP, but we are just trying to avoid particular people from misquoting your tests as reliable, and start spreading misinformation due to flawed results. if it ok, I suggest to edit the initial posts and remove the images for now and change it later.
10-16-2010, 11:20 AM   #37
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Thanks for sharing tsammyc!
10-16-2010, 12:43 PM   #38
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The biggest draw to me is the 14bit over 12.

10-16-2010, 07:58 PM   #39
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thanks tsammtc

QuoteOriginally posted by tsammyc Quote
Hi all, in my haste, I accidentally swapped the K5 ISO 6400 with the ISO 12800. Its fixed now. Apologies
Thanks. This is the most useful comparison for me because I have a k-x and I am interested in k-5.
Is it possible for you to upload the raw files for k-x and k-5, for ISO 1600 and above?
I just want to push the two files through my regular workflow - Aperture, and check if there is a big difference in the outcome.

There is obviously a lot of excitement over the IQ of high ISO shots in other threads. But I have a feeling that many of these guys ignored the k-x because it's entry level, and so their feeling on 'how big a step K5 is over k-7/k20d' may be overstated a bit.

Obviously most of them shoot in extreme weather conditions and often in life threatening emergencies where an extra press of a button to change ISO is the difference between survival and destruction. I, on the other hand, don't mind that too much. But, I am quite interested to see if K-5 can make 1 or 2 stop difference over k-x. That will mean a lot. Most of my indoor shots are in dim light - 1600 and 3200 is a common scenario.


10-16-2010, 08:02 PM   #40
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It appears that while the K-5 high-iso pics are more noisy than those from the K-x, they also have a significantly larger amount of preserved detail. Another strange thing that I noticed is that the K-5's photos are a little darker- has Pentax improved its metering accuracy?

In the ISO 800 pic, we can also see better color handling by the K-5. Have the custom image features been left at their default settings?

Was in-camera noise reduction off in both cameras? Have you tried playing with the settings?


K5vsKX ISO 6400
It would also be nice to see some scaled samples to see how the higher resolution affects the overall noise levels.

Overall, I think that we can conclude that the K-x holds its ground, but that the K-5 is at least as good IQ-wise (this was arguable for K-7 vs K-x).

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10-16-2010, 08:14 PM   #41
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Not criticising the OP, just that we can't conclude from these shots.
The two cameras were metering differently.
The K-X shots had about 1 stop brighter exposure. It washed out the colours ( obvious from the Reds and Yellows in the right hand corner) and doesn't make ISO noise comparison meaningful.
It made the K-5 appear to have so much richer colours and contrast, which I don't think is right (I can believe a bit better, but not to this extent.)
06-13-2012, 01:22 PM   #42
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I got rid of my k-5 after about 5000 shots. Tried loving it, but just couldn't. I purchased at k-x before and always felt (quietly) the k-5 was not much better than k-x in high iso. This is the 3rd or 4th place i've heard that the k-x is about the same if not a bit better in high iso performance. K-x seems to retain better detail. I much prefer the k-x colors over the k-5, which looks dull, plastiky. Not missing the k-5 at all. Still loving the k-x.
06-13-2012, 09:01 PM   #43
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You know I have the k-5 and use the K-x more and more now. I have always said it is the best camera made for the money... Actually I use instead of the k-5. My k-5 is falling apart and my old k-x is still clunking along...
06-13-2012, 10:16 PM   #44
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"outsider" likes this.
06-15-2012, 12:56 PM   #45
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Reported OP to Admin. How am I supposed to justify buying a K-5 now??

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