DPR Pentax K20D Review

Started May 8, 2008 | Discussions
Richard Butler
Richard Butler dpreview Admin • Posts: 2,774
DPR Pentax K20D Review

Just to update you all about the status of the Pentax K20D review.

During testing we have encountered the same problems with hot pixels that have been reported elsewhere. We have continued to experience the same difficulties with a second production body and are currently awaiting a response from Pentax before proceeding with further testing.

Richard - DPReview

KL Matt Veteran Member • Posts: 5,949
Re: DPR Pentax K20D Review

Hi Richard,

Thanks very much for the heads up.

Do you have time or the inclination to give us a bit more detail on the hot pixels? Doesn't the camera have a hot pixel mapping feature? Do they occur only in jpegs or also in RAW?

Thanks,

-Matt

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awaldram
awaldram Forum Pro • Posts: 13,271
Re: DPR Pentax K20D Review

That is very kind of you to update us.

Thank you.

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steelski Senior Member • Posts: 2,555
Is this the green pixels that you talk about?

The ones that appear randomly?

Ishpuini Veteran Member • Posts: 6,249
Re: DPR Pentax K20D Review

R Butler wrote:

Just to update you all about the status of the Pentax K20D review.

During testing we have encountered the same problems with hot pixels
that have been reported elsewhere. We have continued to experience
the same difficulties with a second production body and are currently
awaiting a response from Pentax before proceeding with further
testing.

Richard - DPReview

Thanks for the update Richard. Could you point us to those hot pixel problem reports? I haven't noticed any problems on my K20D so far, but I am shooting RAW and processing in Lightroom which eliminates these automatically...

tx, Wim

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Caat Senior Member • Posts: 2,229
I didn't know there was a problem

Is this a 'known' problem then that has been widely reported? I haven't read about it on any forums, I could just have missed it of course.

Richard Butler
OP Richard Butler dpreview Admin • Posts: 2,774
Re: DPR Pentax K20D Review

Until we've heard more from Pentax or conducted more thorough testing, it wouldn't be proper for me to discuss this any further, I'm afraid.

There have been posts that imply we're not the first to have difficulties:
http://forums.dpreview.com/forums/read.asp?forum=1036&message=27571333

Richard - DPReview

sankos Senior Member • Posts: 2,374
optyczne.pl

There was a Polish review a couple of weeks ago which pointed out a hot pixel issue they had with their cameras. Later on it was discovered that some of the hot pixels on RAW images weren't really hot pixels, but still...

BTW, the review website looks like it's been hacked. Interesting...
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ichiboy Junior Member • Posts: 49
Re: DPR Pentax K20D Review

weird that you had that from two bodies. Hopefully this will be fixed soon with the newer revisions.

Do you like the camera overall though (if you can do that :P)?

Caat Senior Member • Posts: 2,229
Re: DPR Pentax K20D Review

R Butler wrote:

Until we've heard more from Pentax or conducted more thorough
testing, it wouldn't be proper for me to discuss this any further,
I'm afraid.

There have been posts that imply we're not the first to have
difficulties:
http://forums.dpreview.com/forums/read.asp?forum=1036&message=27571333

Richard - DPReview

Thanks for the link and the update.

ptodd
ptodd Senior Member • Posts: 1,327
Re: DPR Pentax K20D Review

KL Matt wrote:

Do they occur only in jpegs or also in RAW?

That would be a bit strange, wouldn't it? It would be more like vice-versa, I'd have thought.

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Peter

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Cideway
Cideway Veteran Member • Posts: 5,707
Re: DPR Pentax K20D Review

It is curious that they only two people to have had this issue are both review sites.
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Ishpuini Veteran Member • Posts: 6,249
Re: DPR Pentax K20D Review

R Butler wrote:

Until we've heard more from Pentax or conducted more thorough
testing, it wouldn't be proper for me to discuss this any further,
I'm afraid.

Of course, that's the honourable thing to do!

There have been posts that imply we're not the first to have
difficulties:
http://forums.dpreview.com/forums/read.asp?forum=1036&message=27571333

Tx, I hadn't seen that. Haven't seen the problem in the various shots and review of the forum member that own the K20D in the mean time (incl myself), but I will look forward to reading more about this in your review when it is published.

tx!! Wim

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sfa1966
sfa1966 Veteran Member • Posts: 3,472
Re: DPR Pentax K20D Review

Cideway wrote:

It is curious that they only two people to have had this issue are
both review sites.

Replace your word 'had' with 'noticed', then remember that review sites perhaps have test equipment that Joe Average does not, and it might not be quite so curious.

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Cheers,
sfa

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Ishpuini Veteran Member • Posts: 6,249
Re: DPR Pentax K20D Review

Cideway wrote:

It is curious that they only two people to have had this issue are
both review sites.

Indeed it is... Perhaps it's the K20D not liking specific to testing environments and showing these pixels as a sign of stress, but not caring when used for its proper purpose, i.e. real photography, and hence not showing them in that case?

Wim

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KL Matt Veteran Member • Posts: 5,949
Re: DPR Pentax K20D Review

Hi Peter,

That would be a bit strange, wouldn't it? It would be more like
vice-versa, I'd have thought.

No clue. Don't even know what the problem is and if I did I don't have much technical knowledge to deduce anything anyway.

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Edvinas Senior Member • Posts: 2,812
Re: DPR Pentax K20D Review

ptodd wrote:

KL Matt wrote:

Do they occur only in jpegs or also in RAW?

That would be a bit strange, wouldn't it? It would be more like
vice-versa, I'd have thought.

Many RAW converters automatically are mapping out hot pixels.

My *ist DS had a couple of hot pixels visible in out of camera jpegs, however I haven't seen any of them in RAW files because my RAW converter is mapping out such pixels automatically.

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Edvinas

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superbaguy Contributing Member • Posts: 646
My K20D

I've seen one or two once in awhile. I had far more on my DS, though I don't remember seeing any on my K10D. The funny thing is (keep in mind it hasn't bothered me enough to start testing for this) that the seem more likely to occur at ISO 100 than 200+ which is totally the opposite of what I experienced on my DS. Perhaps this is the small price paid for the great high ISO performance of the K20D.

Lance B Forum Pro • Posts: 32,563
Re: DPR Pentax K20D Review

sfa1966 wrote:

Cideway wrote:

It is curious that they only two people to have had this issue are
both review sites.

Replace your word 'had' with 'noticed', then remember that review
sites perhaps have test equipment that Joe Average does not, and it
might not be quite so curious.

What??

Are you saying that the only way to see these "hot pixels" is to have specialist testing equipment like a reviewer has?? Hmm, remind me not to have this specialist testing equipment to check my photos as I really must be missing something in my photos if that is the case.

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vortout Regular Member • Posts: 211
Re: DPR Pentax K20D Review

Is it an issue then? How it can affect real life if you need the very special test equipment? I got k20d. I have enough shots and i cannot find hot pixels yet.
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