On Nov 29, 2010, at 14:24 , Charles Robinson wrote:

> On Nov 29, 2010, at 16:00, Dario Bonazza wrote:
> 
>> Charles Robinson wrote:
>> 
>>> On Nov 29, 2010, at 14:46, Dario Bonazza wrote:
>>>> 
>>>> Is [11. WB Adjustable Range] in the [C Custom Setting 2] menu set to 
>>>> [Fixed]?
>>>> 
>>>> If not, that could explain that behaviour. Don't ask me why one should 
>>>> select a given white balance and then allow the camera to change it, but 
>>>> Pentax thinks of it as a good idea!
>>>> 
>>> 
>>> Isn't this all about being able to fine-tune all of the WB settings?  Not 
>>> the camera doing it, but the user making adjustments.
>> 
>> K-7 manual, page 192:
>> 
>> "The camera automatically performs fine-tuning even when the light source is 
>> specified. The color temperature of the light source is fixed when [11. WB 
>> Adjustable Range] in the [C Custom Setting 2]] menu (p.85) is set to 
>> [Fixed]."
>> 
>> AUTOMATICALLY, even when the light source is specified.
>> 
> 
> Well now, that's just nuts.
> 
> -Charles

A. My K-20, and now my K-7 exhibit a similar problem in AWB. And now I know 
why..  Except it seems like the cameras jump to a whole different type of 
light, not just make subtle corrections (see B.)

B. Custom 12) Subtle or Strong variations in AWB or fixed should definitely be 
on "Subtle" to prevent the very wrong shift in your photos.

C. Dance practice halls I've ever been in have always had overhead fluorescent 
banks of 4 tubes per. Never seen one lit with tungsten. But I'm sure you know 
what you saw. Another checkmark for chimping, at least for starters. In your 
example you would have had to chimp the first 5 or 6 to realize something was 
wrong.

D. Please let us know what you find out abut the session. May give some more 
clues.


Joseph McAllister
[email protected]

There is no off position to the genius switch.
Genius can, however, be observed as insanity.


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