[no subject]

On 23 Dec, 2010, at 09:25, Dennis wrote:

> My issue is that Leica chose to store the sensor characteristics in the 
> main camera circuit board. I would have put them in the sensor assembly to 
> avoid having the sensor assembly individually matched to the camera body. 
> They might have saved one piece of non-volatile memory but it sure looks 
> like it complicated the manufacturing and repair process.
> 
> Possibly the most profiled sensors are those used in astronomical 
> instruments, telescopes. Custom made and super expensive.
> 
> Apparently the "raw" data from the M9 is pretty cooked ;-)
> 
> 
> Marty Deveney wrote:
>> On Wed, Dec 22, 2010 at 8:44 PM, Dennis <dennis at hale-pohaku.com> wrote:
>>  
>>> I forgot that it seems that Leica characterizes each sensor and stores 
>>> that
>>> data in the camera. Not in a way I would have done it though.
>>>    
>> 
>> The sensor is profiled and that data is in the camera in every digital
>> camera.  What varies is how thoroughly or well it's done.  For a lot
>> of my scientific work, we profile the sensor before each shot, and
>> they are grade 0 sensors (i.e. shown to have no flaws by repeated
>> testing), a lot better than even those that get put into large and
>> medium format camera for photographic purposes.
>> 
>>  
>>> The processor does have to make a jpg and write all the crap to the 
>>> memory
>>> card and figure out exposure and, for the jpg, white balance. Plus more
>>> stuff.
>>>    
>> 
>> Even in a raw file, the processor and the firmware has to 'make' the RAW 
>> file.
>> 
>> Marty
>> 
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>> 
>>  
> 
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