Newbie with a new K100D Super.

G-CPTN · 08-17-2008, 03:27 PM

My K100D is less than a week old. I've changed very little so far (ISO, Av MF SR etc) and a total of 80 exposures (none worth keeping).

I've not changed the 'resolution' from the default setting (not certain I know which menu - ah, just checked 'menu' and it says 6M in Recorded Pixels and Quality Level ***.

Now, the JPG images on the SD memory card range from 2 to 4 MB.

Can anyone explain?

Am I being cheated?

aamir515 · 08-17-2008, 03:52 PM

hello there......
I have a k100DS too and my file sizes also range from 2-4 mb depending on the photo........
what exactly u mean by being cheated........
btw, r u in newcastle, pa?

borno · 08-17-2008, 03:53 PM

File sizes vary with the scene more detailed scenes are bigger.
I use raw on my super and they are about 10 MB and after processing most are 2-4 MB
hope this helps

G-CPTN · 08-17-2008, 04:03 PM

Originally posted by aamir515

hello there......
I have a k100DS too and my file sizes also range from 2-4 mb depending on the photo........
what exactly u mean by being cheated........

borno seems to have answered why the file sizes are not 6MB

Originally posted by aamir515

btw, r u in newcastle, pa?

Newcastle, England (United Kingdom aka Great Britain)

troywhite · 08-17-2008, 04:52 PM

Ummmm the 6M in the menu refers to the number of pixels recorded on the sensor... ie a 6 megapixel camera has 6 million (roughly) pixel sites that record data.

It has nothing to do with it saving a 6MB image file.

The reason the size of the file varies is that JPEG is a compressed file and depending on what blocks of colour are in the image it will be bigger or smaller. The more varied the colour range in the image, the bigger the resulting compressed JPEG.

To see what I mean, take a photo of something with one of the primary colours dominant ie red. You will notice the files size will be small.

aamir515 · 08-17-2008, 07:20 PM

Originally posted by G-CPTN

borno seems to have answered why the file sizes are not 6MB

well, unlike others, pentax is a pretty honest company

**Ash** · 08-17-2008, 11:08 PM

RAW file sizes are mostly the same, JPEG images vary in size due to complexity of information that needs to be compressed.

Complicated elements in image = larger JPEG
Simple elements in image = small JPEG

08-17-2008, 03:27 PM	#1
G-CPTN New Member Join Date: Aug 2008 Location: Northumberland, England (Gt Britain) Posts: 17	Newbie with a new K100D Super. My K100D is less than a week old. I've changed very little so far (ISO, Av MF SR etc) and a total of 80 exposures (none worth keeping). I've not changed the 'resolution' from the default setting (not certain I know which menu - ah, just checked 'menu' and it says 6M in Recorded Pixels and Quality Level ***. Now, the JPG images on the SD memory card range from 2 to 4 MB. Can anyone explain? Am I being cheated?

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08-17-2008, 03:52 PM	#2
aamir515 Senior Member Join Date: Nov 2007 Location: NE Ohio Photos: Gallery Posts: 103	hello there...... I have a k100DS too and my file sizes also range from 2-4 mb depending on the photo........ what exactly u mean by being cheated........ btw, r u in newcastle, pa?

08-17-2008, 03:53 PM	#3
borno Veteran Member Join Date: Nov 2006 Location: md-usa Photos: Gallery \| Albums Posts: 2,580	File sizes vary with the scene more detailed scenes are bigger. I use raw on my super and they are about 10 MB and after processing most are 2-4 MB hope this helps

08-17-2008, 04:03 PM	#4
G-CPTN New Member Join Date: Aug 2008 Location: Northumberland, England (Gt Britain) Posts: 17 Original Poster	Originally posted by aamir515 hello there...... I have a k100DS too and my file sizes also range from 2-4 mb depending on the photo........ what exactly u mean by being cheated........ borno seems to have answered why the file sizes are not 6MB Originally posted by aamir515 btw, r u in newcastle, pa? Newcastle, England (United Kingdom aka Great Britain)

08-17-2008, 04:52 PM	#5
troywhite Senior Member Join Date: Mar 2007 Location: Canberra, Australia Photos: Gallery Posts: 170	Ummmm the 6M in the menu refers to the number of pixels recorded on the sensor... ie a 6 megapixel camera has 6 million (roughly) pixel sites that record data. It has nothing to do with it saving a 6MB image file. The reason the size of the file varies is that JPEG is a compressed file and depending on what blocks of colour are in the image it will be bigger or smaller. The more varied the colour range in the image, the bigger the resulting compressed JPEG. To see what I mean, take a photo of something with one of the primary colours dominant ie red. You will notice the files size will be small.

08-17-2008, 07:20 PM	#6
aamir515 Senior Member Join Date: Nov 2007 Location: NE Ohio Photos: Gallery Posts: 103	Originally posted by G-CPTN borno seems to have answered why the file sizes are not 6MB well, unlike others, pentax is a pretty honest company

08-17-2008, 11:08 PM	#7
Ash Loyal Site Supporter Join Date: Mar 2007 Location: Toowoomba, Queensland Photos: Gallery \| Albums Posts: 23,920	RAW file sizes are mostly the same, JPEG images vary in size due to complexity of information that needs to be compressed. Complicated elements in image = larger JPEG Simple elements in image = small JPEG