Paul,

The variation is in the included JPEG preview.

-Adam

On Mon, Nov 10, 2008 at 11:24 AM, PN Stenquist <[EMAIL PROTECTED]> wrote:
> My RAW DNG files, which I believe are uncompressed, typically vary from
> about 22.8 megabytes to 23.5 megabytes.
> Paul
> On Nov 10, 2008, at 11:16 AM, Charles Robinson wrote:
>
>> On Nov 10, 2008, at 9:59, ann sanfedele wrote:
>>>
>>> Charles Robinson wrote:
>>>
>>>> On Nov 9, 2008, at 18:26, Walter Hamler wrote:
>>>>
>>>>> Yesterday while shooting the air show I was down to 60 odd shots when
>>>>> the Blue Angels started their performance. I had a second card in my
>>>>> pocket, but when the show was over I still had images left, but I
>>>>> don't know how many. I didn't run out and I didn't check the counter.
>>>>> When I uploaded the images the PSE7 Organizer said I had 247 new
>>>>> images. Not believing it, I counted and there were indeed 247 images.
>>>>> As that is about 80 more than it told me I had, is that normal?
>>>>
>>>>
>>>> Totally normal.  If the image is compressible, it's the complexity of
>>>>  the image which dictates just how much it can be crunched down.
>>>
>>> It applies to raw files too - but  maybe that is obvious .  (low techy
>>> moi)  and CF cards.
>>>
>>
>> Compressed RAW files, yeah.  I would wager that if you are saving in a
>> non-compressed format (I don't remember which is which) they would all be
>> the exact same size!
>>
>>>>
>>>> When I shot a concert a couple nights ago (which I do in JPEG), the
>>>>  card stated that I had about 380 images or so to go on my 2gig card  when 
>>>> I
>>>> started.  But I ended up putting 897 images on the card, with  space for
>>>> 30-40 more left over.   A lot of black space = smaller images.
>>>>
>>>> -Charles
>>>
>>> Or a lot of white or any color area that lacks detail, yes? (all other
>>> things being equal).
>>>
>>
>> Yes.  Agree.  Lot of white, lot of sky - anything which is a lot of the
>> same value (and, I'd guess, contiguous - but I don't know that for sure).
>>
>> -Charles
>>
>> --
>> Charles Robinson - [EMAIL PROTECTED]
>> Minneapolis, MN
>> http://charles.robinsontwins.org
>>
>>
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-- 
M. Adam Maas
http://www.mawz.ca
Explorations of the City Around Us.

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