Go Back   Steve's Digicams Forums > Digicam Help > General Discussion

Reply
 
Thread Tools Search this Thread
Old Dec 27, 2004, 6:34 AM   #1
Member
 
TunafishJoe's Avatar
 
Join Date: Dec 2004
Posts: 76
Default

I just purchased a Minolta DiMAGE s414 from ebay and I read that the images are taken using 12-bit color instead of the standard 8.

First off am I correct or am I horribly wrong. And if I'm correct what are the noticable differences between color numbers? ie file size, image quality, compatability. Thanks alot...
Attached Images
 
TunafishJoe is offline   Reply With Quote
Sponsored Links
Old Dec 27, 2004, 9:58 AM   #2
Guest
 
Posts: n/a
Default

Goolge is your friend:
http://www.luminous-landscape.com/tu...it-depth.shtml
So is Luminous-Landscape for that matter...
  Reply With Quote
Old Dec 27, 2004, 10:11 AM   #3
Senior Member
 
Join Date: Jul 2003
Posts: 3,396
Default

How are you writing your images? If you are writing JPG to your CF card you are saving them as 8bit by default.

If you are doing RAW then you have the other bits to work with in PS if you have a version of PS(like PS CS) that can handle the higher bit images.
PeterP is offline   Reply With Quote
Old Dec 27, 2004, 5:10 PM   #4
Member
 
TunafishJoe's Avatar
 
Join Date: Dec 2004
Posts: 76
Default

I am writing them as Super Fine Jpeg's. So Jpeg's can only be saved as 8-bits?
TunafishJoe is offline   Reply With Quote
Old Dec 27, 2004, 5:19 PM   #5
Senior Member
 
Join Date: Jul 2003
Posts: 3,396
Default

Yes, jpg's are 8-bit/color ie: 24bit files. Your camera sensor is outputing at 12bit/color or 36bit images.
Not many file formats can handle 12bit or 16bit(really expensive MF camera)/channel color. Raw and PSD(Photoshop native) can, not sure about TIFF, they tend to be huge and I stay away from them.

I see that ACDsee now has a power plugin that lets it view raw, high bit formats.
PeterP is offline   Reply With Quote
Old Dec 27, 2004, 5:20 PM   #6
Member
 
TunafishJoe's Avatar
 
Join Date: Dec 2004
Posts: 76
Default

Thanks Kalipso and thanks Google. But if I'm hearing PeterP right, Jpeg's can only be saved as 8-bit anyways. And I'm not about to wait 45 seconds between shots to save them as uncompressed Tiffs. Thanks for the info.
TunafishJoe is offline   Reply With Quote
Old Dec 27, 2004, 5:59 PM   #7
Senior Member
 
Join Date: Nov 2004
Posts: 935
Default

I thought that jpgs are 24 bit colour. That is, each pixel can be set to one out of 2^24 colours.... a palette of around 16 million colours. While gif format has a palette of 256 colours.
Kenny_Leong is offline   Reply With Quote
Old Dec 27, 2004, 9:52 PM   #8
Senior Member
 
Join Date: Jul 2003
Posts: 3,396
Default

Yes, you are correct, a jpg is a 24bit color image, made up of 3 * 8 bit channels. Hence the 8bit/channel designation


Quote:
Originally Posted by Kenny_Leong
[b]jpgs are 24 bit colour. That is, each pixel can be set to one out of 2^24 colours.... a palette of around 16 million colours. While gif format has a palette of 256 colours.
[/quote]
PeterP is offline   Reply With Quote
 
Reply


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 Off
Pingbacks are Off
Refbacks are Off



All times are GMT -5. The time now is 8:03 PM.