Go Back   Steve's Digicams Forums >

LinkBack Thread Tools Search this Thread
Old Jun 13, 2015, 12:34 AM   #1
Senior Member
lgbalfa's Avatar
Join Date: Jan 2006
Location: New York, NY
Posts: 125
Default choosing the jpeg format?

is it best to set the camera setting with jpeg fine (1/4) or jpeg normal (1/8)?

Pentax K-50
lgbalfa is offline   Reply With Quote
Sponsored Links
Old Jun 13, 2015, 1:19 AM   #2
Senior Member
Hawgwild's Avatar
Join Date: Mar 2006
Location: Pensacola, Florida
Posts: 3,589

Originally Posted by lgbalfa View Post
is it best to set the camera setting with jpeg fine (1/4) or jpeg normal (1/8)?

If I understand the question, my answer is always this: Set your camera to capture the most megapixels it is capable of. My reasoning is that, while you can always discard information in downsizing, it is impossible to add information to a file that never contained that information to begin with. One day, you may want to make a 20X30 print. I have made several, after telling myself I never would print that big.

Sorry for being long-winded. Large/fine..max MP. You can't go wrong.
Always use tasteful words - you may have to eat them.
You cannot find knowledge by rearranging your ignorance.

My Flickr

Hawgwild is offline   Reply With Quote
Old Jun 13, 2015, 5:11 AM   #3
Senior Member
TCav's Avatar
Join Date: Sep 2005
Location: Washington, DC, Metro Area, Maryland
Posts: 13,826

JPEG images are compressed using a method that will lose some detail from the original scene. JPEG Normal compresses the image more (loses more detail) than JPEG Normal. For most things, I suggest you use JPEG Fine, but if you are just taking vacation snapshots and need the extra space on your memory cards that the greater compression will give you, go ahead and use JPEG Normal.
  • The lens is the thing.
  • 'Full Frame' is the new 'Medium Format'.
  • "One good test is worth a thousand expert opinions." - Tex Johnston, Boeing 707 test pilot.
TCav is offline   Reply With Quote
Old Jun 13, 2015, 10:56 PM   #4
Senior Member
Ozzie_Traveller's Avatar
Join Date: Jan 2011
Location: Australia, New South Wales central coast
Posts: 3,645

G'day mate

As I understand that part of the JPEG function -

In 'normal' compression mode the JPG algorithm works on a 16 x 16 pixel array [=256 pixels] as it does its merry dance in the compression process and ends up with an array of 8 x 8 pixels [64 pixels] being saved to the memory card ie: 1/4 or 1:4 compression

In 'fine' JPG mode the algorithm works on a 16 x 8 pixel array which drops down to the 8 x 8 pixels ... ie: a 1/2 [1:2 compression], thus giving you a better image for large prints

NB: don't forget that the other part of the algorithm magnifies these 64 pixel blocks back to 256 pixels for viewing & printing, thus a 12mpx image returns to 12 mpx, it's just that some pixels have been "lost" and then "duplicated" later on

It is when you go to a 1:16 or 1:32 high compression but low quality that your final image will show heaps of compression artefacts and loss of quality

Hope this helps a bit
Has Lumix mirrorless & superzoom cameras and loves their amazing capabilities
Spends 8-9 months each year travelling Australia
Recent images at http://www.flickr.com/photos/ozzie_traveller/sets/
Ozzie_Traveller is offline   Reply With Quote

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

All times are GMT -5. The time now is 10:26 AM.