Go Back   Steve's Digicams Forums > Digital SLR and Interchangeable Lens Cameras > Olympus dSLR

Thread Tools Search this Thread
Old Feb 6, 2008, 5:44 PM   #1
Senior Member
HarjTT's Avatar
Join Date: Aug 2004
Posts: 4,469

Hi Guys & Gals

I took my first set of RAW shots with the E3 on the way home tonight. Its been updated with the latest firmware and I was shooting at high ISO 800 - 1250, Manual mode and RAW+Jpeg, No NR or filter. I've been working on the files in ACR 4.3.1 (just fix WB, 50% USM and the odd B&W conversion) and saving the jpegs at the highest quality is producing files that are 8 to 10MB in size ! Most of the in came jpegs(highest quality) are no larger than 5-6MB. Is this the case with all of the 10MP cam's ?

I'm not doing any additional pp than I normally do so I'm a wee bit shocked by the increase in file size and how much bigger they are than the incam jpegs.



HarjTT is offline   Reply With Quote
Sponsored Links
Old Feb 6, 2008, 9:26 PM   #2
Senior Member
boBBrennan's Avatar
Join Date: Aug 2005
Location: Arlington, Texas USA
Posts: 3,512


I noticed right away the RAW files (E3) are actually smaller @ 9-11 MB than from my E-300 which usually are all at 11+MB. I am using BibblePro or Therapee for conversion to jpg and the resulting file sizes from the E3 are @ 5-6MB for most.

The smaller (E3) RAW files are producing larger .jpg on conversion than are the larger (E-300) RAW files.

So, not being very saavy about it all...... I am believing the E3 RAW data is just greater in significant detail than from the E-300 due to the new brand 10MP sensor in the E3.

I don't know what I just said but I've noticed what you say ....... maybe someone will tell us what really is going on because I too would like to know and understand more about it.

boBBrennan is offline   Reply With Quote
Old Feb 6, 2008, 11:26 PM   #3
Senior Member
Mikefellh's Avatar
Join Date: May 2004
Location: Toronto, ON, Canada
Posts: 1,707

Easy, the RAW files on the newer cameras (E-410, E-510, E-3) are compressed using a lossless compression, while RAW files on the older cameras (E-1, E-300, E-330, E-500) aren't.

I'm not sure if the E-400 is or isn't compressed since it was a bridge between the old and new generation of cameras.
Mikefellh is offline   Reply With Quote
Old Feb 7, 2008, 8:01 AM   #4
Senior Member
jorgen's Avatar
Join Date: Apr 2006
Posts: 200

Page 114 in the PDF manual for the e-510: "Loss-less compression" and "file size approx 1.1Mb"

In the e-3 manual: page 135.

jorgen 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 Off
Pingbacks are Off
Refbacks are Off

All times are GMT -5. The time now is 10:05 PM.