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jlaubza · 03-08-2011, 10:09 AM

Hi, anybody know the following? I use my K-X set to 6mp jpeg, not the max 10mp jpeg output.

Does the camera down sample the full sensor 10mp image or does it make use of fewer pixels? I can't see a difference between the 6mp and 10mp images at PC screen size.

And why, if the sensor is rated as a 12mp sensor, is the max jpeg size only 10mp?

Thanks.

einstrigger · 03-08-2011, 11:37 AM

Not sure about your down sampling questions, but to get the max 12MB jpg you need to set the quality level to Best (3 stars) in addition to the file size.

epqwerty · 03-08-2011, 03:17 PM

If you use 6mp you would be resize the picture only not cropping or anything. The camera will still use the Raw image of 12mp just resize it in in camera PP. If you are looking to save space I believe it is better to turn down the quality from 3 stars to 2 stars then change from 12mp to 6mp. Or was it the other way around. Someone else can confirm.

noaslplease · 03-12-2011, 07:49 PM

I think he's asking if the camera resizes the camera or if the sensor goes into "crop" mode, -only using half the megapixels and not downsizing the picture.

The answer is pretty obvious. The camera resizes the picture of the original RAW file, which is discarded.
If the camera used half of the pixels and didn't resize, the angle of view would be much lower, which is NOT good. Unless you want to get extra reach from your camera, which is something Canon has implemented in their systems.

wjjstu · 03-13-2011, 06:05 PM

Originally posted by jlaubza

Hi, anybody know the following? I use my K-X set to 6mp jpeg, not the max 10mp jpeg output.

Does the camera down sample the full sensor 10mp image or does it make use of fewer pixels? I can't see a difference between the 6mp and 10mp images at PC screen size.

And why, if the sensor is rated as a 12mp sensor, is the max jpeg size only 10mp?

Thanks.

JPEG's are 4288 x 2848 at top resolution which is 12,212,224 pixels. I don't know what is wrong?

jlaubza · 03-17-2011, 02:05 AM

Thanks to all. Question answered. And yes, I did make a mistake - it is a 12mp image at full size.

I like Pentax in camera jpegs - they have good quality and can be cropped quite a bit before the image degrades.

03-08-2011, 10:09 AM	#1
jlaubza Senior Member Join Date: Jul 2008 Location: south africa, johannesburg Photos: Gallery Posts: 228	in camera K-X image processing question Hi, anybody know the following? I use my K-X set to 6mp jpeg, not the max 10mp jpeg output. Does the camera down sample the full sensor 10mp image or does it make use of fewer pixels? I can't see a difference between the 6mp and 10mp images at PC screen size. And why, if the sensor is rated as a 12mp sensor, is the max jpeg size only 10mp? Thanks.

03-17-2011, 02:05 AM	#6
jlaubza Senior Member Join Date: Jul 2008 Location: south africa, johannesburg Photos: Gallery Posts: 228 Original Poster	resizing in camera Thanks to all. Question answered. And yes, I did make a mistake - it is a 12mp image at full size. I like Pentax in camera jpegs - they have good quality and can be cropped quite a bit before the image degrades.

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03-08-2011, 11:37 AM	#2
einstrigger Veteran Member Join Date: Dec 2009 Location: Sacramento, CA Photos: Gallery \| Albums Posts: 728	Not sure about your down sampling questions, but to get the max 12MB jpg you need to set the quality level to Best (3 stars) in addition to the file size.

03-08-2011, 03:17 PM	#3
epqwerty Veteran Member Join Date: Dec 2009 Location: Ontario Posts: 550	If you use 6mp you would be resize the picture only not cropping or anything. The camera will still use the Raw image of 12mp just resize it in in camera PP. If you are looking to save space I believe it is better to turn down the quality from 3 stars to 2 stars then change from 12mp to 6mp. Or was it the other way around. Someone else can confirm.

03-12-2011, 07:49 PM	#4
noaslplease Forum Member Join Date: Dec 2010 Location: San Jose, California Photos: Albums Posts: 80	I think he's asking if the camera resizes the camera or if the sensor goes into "crop" mode, -only using half the megapixels and not downsizing the picture. The answer is pretty obvious. The camera resizes the picture of the original RAW file, which is discarded. If the camera used half of the pixels and didn't resize, the angle of view would be much lower, which is NOT good. Unless you want to get extra reach from your camera, which is something Canon has implemented in their systems.

03-13-2011, 06:05 PM	#5
wjjstu Senior Member Join Date: Sep 2009 Posts: 181	Originally posted by jlaubza Hi, anybody know the following? I use my K-X set to 6mp jpeg, not the max 10mp jpeg output. Does the camera down sample the full sensor 10mp image or does it make use of fewer pixels? I can't see a difference between the 6mp and 10mp images at PC screen size. And why, if the sensor is rated as a 12mp sensor, is the max jpeg size only 10mp? Thanks. JPEG's are 4288 x 2848 at top resolution which is 12,212,224 pixels. I don't know what is wrong?

in camera K-X image processing question

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