file size and k10d

mene · 08-29-2007, 05:28 AM

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 )

pschlute · 08-29-2007, 05:41 AM

Hi

I am not an expert on digital files , but I think you might be confused by comparing megapixel with megabite.

mene · 08-29-2007, 05:51 AM

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?

Mechan1k · 08-29-2007, 06:14 AM

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.

mene · 08-29-2007, 06:19 AM

I want say that file size would be approximately 6mb, or more

mattdm · 08-29-2007, 08:28 AM

Originally posted by mene

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.

mene · 08-29-2007, 08:46 AM

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

AVANT · 08-29-2007, 09:30 AM

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.

m8o · 08-29-2007, 09:45 AM

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.

Tom M · 08-29-2007, 12:59 PM

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

08-29-2007, 05:28 AM	#1
mene Inactive Account Join Date: Aug 2007 Location: italy Posts: 6	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, 06:19 AM	#5
mene Inactive Account Join Date: Aug 2007 Location: italy Posts: 6 Original Poster	I want say that file size would be approximately 6mb, or more Last edited by mene; 08-29-2007 at 06:25 AM.

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08-29-2007, 05:41 AM	#2
pschlute Moderator Loyal Site Supporter Join Date: Mar 2007 Location: Surrey, UK Photos: Gallery Posts: 8,211	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
mene Inactive Account Join Date: Aug 2007 Location: italy Posts: 6 Original Poster	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
Mechan1k Veteran Member Join Date: Jun 2007 Location: Sydney, Australia Posts: 2,891	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, 08:28 AM	#6
mattdm Veteran Member Join Date: Feb 2007 Location: Boston, MA Photos: Gallery Posts: 2,948	Originally posted by mene 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
mene Inactive Account Join Date: Aug 2007 Location: italy Posts: 6 Original Poster	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
AVANT Veteran Member Join Date: Jun 2007 Location: California Posts: 426	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
m8o Veteran Member Join Date: Jul 2007 Location: 40°-55'-44" N / 73°-24'-07" W [on LI] Photos: Gallery \| Albums Posts: 3,092	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
Tom M Veteran Member Join Date: Aug 2007 Location: Lincoln Park, NJ Photos: Gallery Posts: 780	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