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03-04-2012, 08:53 PM   #16
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QuoteOriginally posted by pinholecam Quote
Its really lots of hard work!
My sincere thanks for the evaluations.
I shudder to think of myself doing these tests on limited personal time.


Just my few cents, and as you know, I very far from an expert on such things.
No right or wrong to leaving exposure AS IS or Adjusting it up as you are thinking of doing. (can't please everyone)

AS IS, may just mean the actual ISO setting on the K5 and K-01 is different. (eg. ISO 200 is really 250 in K5 and 180 on K-01)
Won't know unless we use a light meter to determine true exposure.
So using exposure AS IS, just means that K-01 and K5 would do exposure differently in real world usage.

Adjusting exposure to match, would perhaps me more representative of camera performance at actual similar ISO (exposure).
But then again, in real usage, the user will never know or remember that "Oh, I should really use ISO 320 on K-01, to be the same as ISO200 on K5")
Thanks JK I guess I'd stick w/ the same exposure setting, it's easier for me I guess.

03-04-2012, 08:55 PM   #17
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QuoteOriginally posted by ogl Quote
Thank you very much..K-01 is sharper than K-5 in DNG too. I like it.
It's better choice for my FA*24/2 for landscapes.
I can't confirm that the K-01 produces sharper results than K-5, but it's definitely much easier to get sharp shots if using manual focus (that's what I did during the test 'cause under low artificial light condition I just don't trust the camera's AF).
03-04-2012, 08:58 PM   #18
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QuoteOriginally posted by JohnBee Quote
I've found that the only way to truly match output from camera's in cases such as these is to shoot in full manual.
Same goes for WB which can really throw things off. And so I use a manual WB card to calibrate both units.
This way you can fine-tune each unit to an exact match without any of the complications that arise from using +/- eV, aperture settings etc.

PS. did you use mirror-up with you're shots on the K-5? the ISO100 looks as though there might of been some movement in the scene. - I've found that using a remote with timer helps avoid such things.
Hmm, I do have a white balance card which I seldom use. But in actual use most people (me included) don't use such tools. So I guess testing w/ AWB is still valid in many cases (so we can see how good/bad the AWB works for each camera). I agree it's better to use manual exposure adjustment, that's what I did during the test. And yes, I used 2sec mirror-up for K-5, but I didn't use remote. Tonight I'd use the remote to further reduce any camera shake.
03-04-2012, 10:02 PM   #19
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Sorry guys, I think skydrive removed all the files somehow I can't access them, and they don't seem to be in my account anymore ...

Will try to upload the updated test results on some other web hoster tonight ...

03-04-2012, 10:04 PM   #20
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QuoteOriginally posted by ogl Quote
Thank you very much..K-01 is sharper than K-5 in DNG too. I like it.
It's better choice for my FA*24/2 for landscapes.
I processed these earlier but didn't have any crops at the time. Anyways, here's what I found when processing the two files in Raw Therapee. Granted the K-01 needed very little in terms of sharpening, however, I wasn't able to get any more from the latter despite my best efforts. Having said that, I often get the feeling that the K-5 is showing a little more range on the color side of things(DR?). But as I said earlier, it's really hard to tell what's what when were looking at samples that are this close in IQ.

FROM: DNG, ISO100, PP W/Raw Therapee r4.0.7.1

Pentax K-01 image preview


Pentax K-5 image preview













Full size images, *80% COMP. 1:1 JPG:
http://www.bertin.ca/tmp/K-01/K01_ISO100_RT_FS.jpg
http://www.bertin.ca/tmp/K-01/K5_ISO100_RT_FS.jpg

As you can see, save some very fine differences(color range), both files are extremely close in terms of detail. Though what's interesting is that the K-5 seems much softer in JPG whereas in DNG the difference become much less pronounced. Having said that, the differences in post between both files are surprisingly small.

Hope this helps.

Last edited by JohnBee; 03-04-2012 at 10:09 PM.
03-04-2012, 10:09 PM   #21
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With all due respect to Frank for doing these tests, it's probably unreasonable to expect Frank to get everything 100% identical between the cameras, since unlike organisations like Imaging Resource or dpreview, he doesn't have a lab to perform his tests in.

Anyone who wants super-duper 100% identical testing rigour between the K-5 and K-01 should probably just wait a bit for the big sites to do their tests.

Not that I think there will be huge differences seen between the IQ of either camera anyhow. K-5 vs K-01 is going to be an exercise in splitting hairs at best.
03-05-2012, 04:09 AM   #22
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Thanks bro for taking the time to do the side-by-side camera comparisons.
The K-01 now probably the head of the pack among mirrorless cameras in terms of image quality.

And thanks again for helping me with the other camera. Have to say I'm really impressed with my hours old Pentax Q. Just awesome fun... we'll go out for drinks soon.
03-05-2012, 04:47 AM   #23
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QuoteOriginally posted by JohnBee Quote
I processed these earlier but didn't have any crops at the time. Anyways, here's what I found when processing the two files in Raw Therapee. Granted the K-01 needed very little in terms of sharpening, however, I wasn't able to get any more from the latter despite my best efforts. Having said that, I often get the feeling that the K-5 is showing a little more range on the color side of things(DR?). But as I said earlier, it's really hard to tell what's what when were looking at samples that are this close in IQ.

FROM: DNG, ISO100, PP W/Raw Therapee r4.0.7.1

Pentax K-01 image preview


Pentax K-5 image preview


Full size images, *80% COMP. 1:1 JPG:
http://www.bertin.ca/tmp/K-01/K01_ISO100_RT_FS.jpg
http://www.bertin.ca/tmp/K-01/K5_ISO100_RT_FS.jpg

As you can see, save some very fine differences(color range), both files are extremely close in terms of detail. Though what's interesting is that the K-5 seems much softer in JPG whereas in DNG the difference become much less pronounced. Having said that, the differences in post between both files are surprisingly small.

Hope this helps.
Thanks John All I can say is K-01 is a really capable camera. I shall redo the test again tonight w/ better settings and control

03-05-2012, 04:47 AM   #24
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QuoteOriginally posted by creampuff Quote
Thanks bro for taking the time to do the side-by-side camera comparisons.
The K-01 now probably the head of the pack among mirrorless cameras in terms of image quality.

And thanks again for helping me with the other camera. Have to say I'm really impressed with my hours old Pentax Q. Just awesome fun... we'll go out for drinks soon.
For you, any time Glad to know that you like the Q, it's really one of the cutest camera. If only the sensor is slightly bigger ...
03-05-2012, 05:11 AM   #25
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Heh, Ricehigh doesn't like you it seems...
03-05-2012, 06:17 AM   #26
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QuoteOriginally posted by JinDesu Quote
Heh, Ricehigh doesn't like you it seems...
I think he doesn't like anyone who says any good words about Pentax stuff, especially the current Pentax products
03-05-2012, 06:49 AM   #27
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After all these dudes in camera comparison tests arguing you can just evaluate cameras theoretically, one even asked me why you would do a side by side comparison. FInally a guy who gets it.... thanks so much.
03-05-2012, 07:07 AM   #28
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I just choose the iso3200 raw file to compare
I find the k-01 is a bit darker, and slightly sharper
03-05-2012, 07:21 AM   #29
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Thanks for doing these tests, which show what we would have hoped, that the K-01 has the same (or near enough) image quality to the K-05. In other words, it's a simple repackaging of the same tech, one year plus down the line.
03-05-2012, 07:36 AM   #30
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K-01 is a good BUSINESS strategy

QuoteOriginally posted by rparmar Quote
Thanks for doing these tests, which show what we would have hoped, that the K-01 has the same (or near enough) image quality to the K-05. In other words, it's a simple repackaging of the same tech, one year plus down the line.
Isn't that musiness strategy called diffusion (Everett Rodgers, I think)?

Once your 1st-generation technology is exploited by innovators and early adopters, you must jump the chasm between them (your dedicated, repeat buyers) and the early majority. Jumping (or bridging) the chasm is one of the hardest steps to implement in a growth business or product.

Pentax has had several real cutting-edge breakthroughs since 2006 (K10D, K7/K5, 645D) but they've not been able to convince people outside their core group to try them. Perhaps repackaging their generation-old technology in an attractive box, making it a bit simpler to use and marketing it outside the photographic community as funb and edgy will do that.

Consider the concurrent availability of the iPhone 4s, 4 and 3Gs at different prices. for different users.

Why don't we all wait and see what Pentax/Ricoh brings at the top of the next product cycle before we judge them so harshly.

P.S. I queried "diffusion" on Wikipedia - there's a decent short article with a lot of linked content there. Read it.
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