Pentax acknowledges K-5 sensor issues, offers a fix and an apology

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Pentax issued this statement about the stains on the Pentax K-5 sensor:

"To PENTAX K-5 Digital SLR Camera Users
We would like to express our heartfelt appreciation for your patronage of PENTAX products.

We deeply regret that the first shipment of our PENTAX K-5 digital SLR camera included some products with a stained image sensor — a problem which we believe was caused during manufacturing - causing them to occasionally produce images with spots which look something like water drops, and which users cannot remove with ordinary cleaning methods.

All users of these defective products will receive free repair at our service center.

We sincerely apologize for any trouble and inconvenience this problem may have caused. We also promise to do all we can to achieve the highest level of quality control in the future, and eliminate any worries our customers might have about our products. We sincerely appreciate your kind understanding and cooperation regarding this issue."

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  • http://www.ronaldzimmerman.nl Serpiente

    Most people already have their stained K5 replaced by a good one.. Sending back started late November/early December (for free). Now they have an official statement. I think they handled the problem very well!

  • UFO are via Pentax

    The k-5 stains (UFO) are in AA-filter or anti-dust-filter or the sensor assembly process (in Pentax’s plant).

    when the sensor and K-5 PCB have been through the assembly process later, these modules needed to wash to be in solution tank. And then the AA-filter assembly process, as well as the anti-dust-filter and SR module get assembling, these latter assembly process also needed cleansing and checking. In lastly to check each whole module under the microscope, for the dust or stains.

    In any case, these stains (UFO) are the Hoya/Pentax plant’s QC problems.

    Sony Semiconductor has only provided the sensor, did not include the AA-filter/IR-cutor or other parts. (if the stains were in the Sony Semiconductor, then each and every cameras would suffer disaster, whatever brand or model. The sensor’s manufacturing processes are highly automated running, unlike camera factory.)

    In the K-5/k-r, AA/IR filter did not remove, but the stains (UFO) have been showed. The many images and ways showed that the stains were existence.

    some cleaning solution were congealed to become vestiges on surface appendiculate in the AA/IR-filter or anti-dust-filter or the sensor surface, (in Pentax plant). The Pentax Germany said shyly.
    http://forum.digitalfotonetz.de/viewtopic.php?t=83708&start=0&postdays=0&postorder=asc&highlight=&sid=7bb30d06b7bd17303290d263ea77657a

    Also, Pentax had once said:
    PENTAX paid close attention… to developing the K10D’s DR system, and applied its original SP (Super Protect) coating to the surface of the low-pass filter…
    https://www.pentax.jp/english/imaging/digital/slr/k10d/feature_04.html

    Well, now you ought to know that the AA/IR-filter never has came from Sony Semiconductor. (AA/IR-filter = low-pass filter)

    other than the cleaning solution vestiges above, another possibility is that the SP coating was QC problem led to k-5 stains, but the latter is low possibility.

    • http://www.ronaldzimmerman.nl Serpiente

      That’s why Pentax apologizes.. They are the one to blame. They solved the problems.

      Are you from Sony now? ;-)

    • Guras

      Everybody know Pentax had octanol mix in China with very bad impure. Dry filter group without cut is so too without proof to the sensor and save money. Some concern very angry at Pentax for stop on item of big volumes, ok!

  • Duchebag City

    It’s not a hardware flaw, it’s a ‘phenomena’.

    • bob

      It’s not plural, it’s ‘singuler.’

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