Sometimes when you think its  going good, a gitch happens and changes all the stakes, we thought over the years it would be fixed, don’t count on that. Business in business, features  are looked upon as a catch, we are told…if only this mistake was not true…..

pentax-sample-failure

pentax-sample-2-failure

These two photographs were taken during a live performance, the Pentax K10D was mounted on a tripod, the lens was Pentax 50mm 1.4 . The conditions I recall were either F8 or F11 at 100 ISO * This is unacceptable.

pentax-k10d

When the Pentax K10D hits the mark and gets it right  Download

This report is aimed to alert designers that simplicity in how things  work is the key to a reliable product. I never expected that my efforts would be couched as if I did something wrong. The sequence of photographs were taken with this camera with one of its lens.  I discovered that when the auto focus switch was on,  it just did not focus on the object…and then it did.  This needs to be explained.  To guarantee that these  photographs would be correctly in focus, I switched it to manual focus. To my horror this was the result……I just had enough.

The Pentax photographed with the Canon Pro 1, 1/8, F2.7 auto ISO. Hand held. Download

Pentax K10. s/n 2539901. A camera that photographs beautifully at times, but has a major issue focusing on objects. No photographs are guaranteed to be properly in focus. Not recommended. Too many functions. Stick to the principle. Exposure, time, sensitivity.

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May I asked why Pentax why?

mikew wrote:

Hmm well I found this some time ago:

I have big news!

If your K10D have problem with focus, you can adjust it yourself.

Someone in Korea figured it out himself.

He is not a employee of Pentax or related company.

He just found out by trial-and-error with key-set.

Of course, You yourself is responsible for doing something scribed below.

Here’s How-to-adjust-focus.

1. Your K10D’ firmware version must be 1.10.

2. Test shot for focus trouble.

3. Turn the camera OFF.
While pressing [PLAY]+[OK], Turn the camera ON.
You can see firmware version on LCD screen.

4. Firmware version is appeared,
then press [Fn]->[Fn]->[INFO]->[MENU] within 5 seconds.
You get service menu!!!

5. by pressing [right key]
,Make DEBUG MODE to DEBUG MODE .
then press [OK].
(save and LCD will be black out)

6. Press [MENU] and go to SETUP tab.
then, Press [Up key], you can see TEST MODE.

7. Select AF TEST menu. now you have AF correction menu.
If you have Front-focusing, reduce the value.
If you have back-focusing, increase the value.
after adjust some value, press [OK] and quit out of setup menu.

8. TEST for focus, find out that focus is correct.
(repeat this from 6 for correct focus.)
9. Go to service menu(step 3,4).
Make DEBUG MODE to DEBUG MODE .
then press [OK].(save and LCD black out)

10. Go out and enjoy nice photos!!!

AGAIN, You yourself is responsible for any damage or trouble by doing this process!!!!!!!!!!!!!

I too can only say use it at your peril!

Improved AF Accuracy of the K20D (Under White Lights Only) courtesy of RiceHigh’s Pentax blog

* For a lens with significant aberrations (e.g. a consumer zoom at maximum focal length and minimum focus distance), stopping down to f16 may give optimum results. For a lens with less aberrations (e.g. a consumer zoom used at infinity focus), optimum performance is around f11, though both f8 and f16 are very similar. Source

Camerablues Richard Bolai copyright ©2009 All Rights Reserved

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