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PostPosted: Tue Apr 21, 2009 3:45 am 
Hi all,

I just purchased a new E-520 body only = $475 canadian.
I changed the picture format to .ORF.
This camera's sensor is 10MP.
The file size is around 8.8MB.

The problem is that my old E-500 used to take 13.4 raw files and that camera's sensor is 8MP.

When I look at exif I see that there is a difference:
3360*2504 of 8MP sensor and
3720*2800 of 10MP sensor, but I swear that the 8mp raw looks more detailed like it is packed with more pixels.

Is it my imagination or what a heck is the deal here ???


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PostPosted: Tue Apr 21, 2009 6:41 am 
I believe there was an option to shoot in TIFF if im not mistaken in the E500, as well as just ORF, the E520 does not shoot in TIFF.


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PostPosted: Tue Apr 21, 2009 10:10 am 
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Joined: Fri Jun 08, 2007 11:10 pm
Posts: 355
Location: Netherlands
The E500 made uncompressed raw files, newer camera's make compressed raw files, that is why the 10 MB files are smaller then the 8 MB files.
The compression is loss less, so you won't lose anything.

Hans

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Olympus E-M5, 9-18, 12-50, 25 f1.8, 45 f1.8, 12-60, 40-150, 70-300


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PostPosted: Tue Apr 21, 2009 4:02 pm 
Hans wrote:
The E500 made uncompressed raw files, newer camera's make compressed raw files, that is why the 10 MB files are smaller then the 8 MB files.
The compression is loss less, so you won't lose anything.

Hans


Well the fact is that you do lose around 6MB or so of data.
Considering you are only left with 10Mb, that is considerable chunk that you do not have anymore.


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PostPosted: Tue Apr 21, 2009 5:52 pm 
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Joined: Fri Jun 08, 2007 11:10 pm
Posts: 355
Location: Netherlands
yes, but the original can be recreated completely (100% identical) from the compressed file. Compare this:
1: red red red red red red red red red red
2: 10 x red

The second one is much shorter, but still gives the same result.

Hans

_________________
Olympus E-M5, 9-18, 12-50, 25 f1.8, 45 f1.8, 12-60, 40-150, 70-300


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PostPosted: Fri May 01, 2009 2:58 pm 
Also I have noticed that photoshop CS3 will not opet those ORF files anymore. Some other programs doesnt read the files either properly.

So my main editing software for RAW files is basically only Picasa (since I didnt even install olympus cd).


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PostPosted: Fri May 01, 2009 6:41 pm 
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Joined: Fri Jun 08, 2007 11:10 pm
Posts: 355
Location: Netherlands
From your profile I see that you have an E520. This camera is supported by Photoshop, so it should work. Maybe you have to download an update? If you just download the update for camera raw, that should be sufficient.

Hans

_________________
Olympus E-M5, 9-18, 12-50, 25 f1.8, 45 f1.8, 12-60, 40-150, 70-300


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PostPosted: Fri May 01, 2009 7:29 pm 
I have no problems opening ORF with photoshop or lightroom.


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 Post subject:
PostPosted: Sun May 03, 2009 1:16 am 
I never had problems with files created by my E-500, but the 520 aren't compatible at least not with photoshop. The Lightroom works great though.


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