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08-29-2007, 05:28 AM   #1
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file size and k10d

Hi all, this is my first message:P

I have a question: why files sizes of my k10d are so small?

whit jpg, 10mpx, 3 star, files sizes are approximately 2-3mb, max 4mb
on raw approximately 8-9mb

(also I've done this photo with my canon ixus 400)

thx all (and sorry for my english )

08-29-2007, 05:41 AM   #2
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Hi

I am not an expert on digital files , but I think you might be confused by comparing megapixel with megabite.
08-29-2007, 05:51 AM   #3
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I think that a camera of 10mpx should do bigger photos (in terms of size) in comparison to one of 4mpx , I am in wrong?
08-29-2007, 06:14 AM   #4
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I find that 10MP images with the highest quality JPG for me is just over the 2Mb size.
To me that is normal.

I haven't had a chance to check out how large my PEF images turn out though ... will soon see when i start PP them.

08-29-2007, 06:19 AM   #5
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I want say that file size would be approximately 6mb, or more

Last edited by mene; 08-29-2007 at 06:25 AM.
08-29-2007, 08:28 AM   #6
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QuoteOriginally posted by mene Quote
I want say that file size would be approximately 6mb, or more
And the RAW files (PEF and DNG) are. The more data is in the file (including especially noise, which doesn't compress well), the larger the file will be. Low ISO out-of-focus pictures will be relatively tiny.
08-29-2007, 08:46 AM   #7
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ok, but i talk about jpg

these "rules" are true for 4mpx and 10mpx

therefore i can't understand because file size are similar...

i am sorry for my curiosity
08-29-2007, 09:30 AM   #8
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The JPG are different sizes because they can be compressed at different levels. There are highly compressed JPGs, and minimally compressed JPGs.

Also newer compression algorithms are a bit more effective. For me, using Photoshop to save maximum quality JPGs from RAW can result in 3-7MB depending on the scene.

08-29-2007, 09:45 AM   #9
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to continue on with that AVANT said with "depending on the scene". Are you shooting something with a lot of uniformity in the background (wall? sky?), or something with a lot of complexity (forest? stadium of people?). You'll see dramatically different file sizes between the former and the latter.
08-29-2007, 12:59 PM   #10
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Look.. If you want large files sizes do the following.

Switch to RAW mode using the DNG format instead of PEF. THEN your files will be between 10MB and 16MB (sometimes larger - sometimes smaller).. Then you can brag about how big your files are :P
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