RiceHigh's Pentax Blog: K-5 Sensor "Stains" Developing Over Time!?

Monday, January 24, 2011

K-5 Sensor "Stains" Developing Over Time!?

See what our die-hard Pentaxian Mr. Mouse @ DPR has found and concluded!

http://forums.dpreview.com/forums/readflat.asp?forum=1036&thread=37539069

So..!? Well, I have no more to say!! >:-( Now, it seems that it is Not a Quality Issue anymore, but just a latent design issue and/or manufacturing defect!

To verify whether this "sensor" problem of the K-5 has been resolved and completely eliminated or not, I've just checked the PF's "serial number database" of the K-5, it can be seen that the latest s/n and units are still affected! >:-[ E.g., see:-

http://www.pentaxforums.com/forums/pentax-serial-number-database/?do=viewserials&id=133&sort=&page=4

Related:-

Report of Re-appeared UFOs with Repaired/Replaced K-5 Unit! :-o

LiveView of the K-5 Creates UFOs / Pearls on Sensor?

K-5 Serial Numbers and Issues Summary

Comments (16)

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Michael (R.) · 740 weeks ago

Some ocmments lead to the conclusion, that the stains are evoked by evaporating liquid, so Sensor heating will cause them to grow. LiveView will speed up the process, eventually.
To be confirmed, but a working hypothesis...

-3 Vote up Vote down

Zebooka · 740 weeks ago

With such "good" QC Pentax is loosing brand name... shame on Hoya.

:(

4 replies · active 740 weeks ago

+2 Vote up Vote down

OGL · 740 weeks ago

??? It's SONY QC problem. Not HOYA.

-1 Vote up Vote down

RiceHigh 110p · 740 weeks ago

Its the AA filter, which is manufactured/sourced by Hoya themselves, not Sony, whom only provides the sensor.

-2 Vote up Vote down

Zebooka · 740 weeks ago

All the other cameras using Sony sensors don't have such problem.

Also as RH mentioned - AA filter is produced by Hoya (and each manufacturer has different one).

-1 Vote up Vote down

RiceHigh 110p · 740 weeks ago

I feel obliged to even mention that all other Pentax DSLRs ever produced didn't and don't have the same problem, except the K-5! Only!

+4 Vote up Vote down

OGL · 740 weeks ago

By the way, D7000 has the same problems...

2 replies · active less than 1 minute ago

-1 Vote up Vote down

RiceHigh 110p · 740 weeks ago

Really? Any report?

0 Vote up Vote down

Michael A. · 740 weeks ago

And other problems with D7000, attempted to get fix with Nikon FW 1.0.1 .."serious-malfunction report".. http://camera.downloadatoz.com/news,946,attention...

+2 Vote up Vote down

bandymelis · 740 weeks ago

Sensor stains is not Pentax problem. Same problems with Nikon D7000 and Sony SLT55: http://forums.dpreview.com/forums/read.asp?forum=...

2 replies · active 716 weeks ago

-1 Vote up Vote down

RiceHigh 110p · 740 weeks ago

People only talk about Pentax in the thread.

+2 Vote up Vote down

src · 716 weeks ago

Another sensor problems with Nikon and Canon sensors: http://forums.dpreview.com/forums/read.asp?forum=...

+2 Vote up Vote down

bandymelis · 740 weeks ago

Here is another problem with NIkon D7000: http://www.photoradar.com/forums/showthread.php?p...
Excerpt: I am hoping that someone can offer some explaination for the following. I bought a Nikon D7000 in November and it has suddenly started displaying 3 small doughnut shaped marks on my images. I have not removed my Nikon 16-85 lens from the body so I would not have thought that sensor dust was the problem. To eliminate that the problem is on the lens I have now swapped the lens with my telephoto and the problem is still there! I have just sent an email to the company that I purchased from and I am waiting for an answer.

+2 Vote up Vote down

bandymelis · 740 weeks ago

Type in "Nikon D7000 problems" and you will find LOTS of them. That is how Rice High is looking for them probably.

+2 Vote up Vote down

Tom · 740 weeks ago

The stains are caused by a glue that hasn't been left to dry for long enough. It is not a design problem but a temporary manufacturing issue. Sad story for Pentax but no showstopper at all.

1 reply · active 740 weeks ago

0 Vote up Vote down

RiceHigh 110p · 740 weeks ago

The *ROOT* problem is that there is no official statement of any from Pentax/Hoya. So, all people are just guessing the "root" clauses and potential buyers are scared and held off, me included! :-(

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Monday, January 24, 2011

K-5 Sensor "Stains" Developing Over Time!?

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