You are probably correct in that statement but the use of the JPEG may
be limited. The Mynolta A1 does create a JPEG when shooting raw
although it doesn't embed it. The problem it that the JPEG is nothing
but a thumbnail image designed to exactly fit the display screen on the
camera. Because it is so small chimpers are unable to do anything about
enlarging the image on screen because there is no detail to enlarge. I
suspect every camera is different.
Chuck Norcutt
Jim Couch wrote:
> Chuck,
>
> Interesting, it was my understanding that ALL raw files have embedded
> JPGs as that is what is used on the display on the camera when shooting
> raw. Will have to check that out.
>
> Jim Couch
>
> Chuck Norcutt wrote:
>> I made my comment based on statements here that ORF files do not have
>> embedded JPEGs. Canon raw files do contain embedded JPEGs but, for a
>> 5D, the embedded JPEG at 4MP is much lower resolution than the raw file
>> at 12.7MP. It's clear from the amount of detail visible in ACR that ACR
>> has converted the raw file for display and does not use the embedded JPEG.
>>
>> Chuck Norcutt
>>
>>
>> Jim Couch wrote:
>>
>>> Chuck,
>>>
>>> I would assume that the display is based on an embedded JPG within the
>>> ORF file, so you are right in that you are not looking at the actual raw
>>> data, but there is no conversion being done in order to open the file in
>>> the editor. The editor may create the JPG file used for display, but I
>>> don't believe that is the case. You convert the file when you are done
>>> editing. As far as I know, this is how most raw editors work - while you
>>> are working with a raw file, and the display is based on a JPG file.
>>>
>>> Chuck Norcutt wrote:
>>>
>>>> Of course it does. Otherwise the displayed image would be a Bayer array.
>>>>
>>>> Chuck Norcutt
>>>>
>>>>
>>>> Jim Couch wrote:
>>>>
>>>>
>>>>> In Master or Studio you are 'editing' the raw file, it does not have to
>>>>> be converted first.
>>>>>
>>>>> Jim Couch
>>>>>
>>>>> Chuck Norcutt wrote:
>>>>>
>>>>>
>>>>>> How is it that a raw file opens directly into the editor? Doesn't the
>>>>>> editor require a converted version?
>>>>>>
>>>>>> Chuck Norcutt
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>>
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