The files from the scanner are uncompressed. The E330 DNG files have
been through lossless compression. I haven't tried DNG with VueScan but
I assume there's a configuration setting somewhere for DNG to enable
lossless compression.
Chuck Norcutt
Jon Mitchell wrote:
> Hi Everyone,
>
> Time to show my complete ignorance on this subject, I suspect.
>
> I have a Minolta Dimage Scan Elite 5400, and VueScan professional
> edition (both of which I am very pleased with). I have been playing
> with it to see what I can get from it and what settings are best for
> various types of film, shot, etc.
>
> Looking at the DNG files from my E330 (raw files, converted to dng with
> adobe dng converter), they are coming in at 3136x2353 pixels (7.4MP).
> With adobe rgb, 16 bits / channel, and 300ppi settings when I open them
> in Photoshop. The file size is around 18-20 MB.
>
> The DNG files from the scanner (well, the VueScan software), I have set
> it to 2400 resolution and it is producing images of 3376x2215 pixels
> (7.5MP) which is pretty comparable in size. With adobe rgb, 16 bits /
> channel, and 300dpi settings, however, these files are coming in at a
> whopping great 44MB.
>
> What am I missing here ? How can 2 files with almost identical number
> of pixels, same other details, etc., be so vastly different in size ?
>
> Humour me. I know I must be missing something obvious ;-)
>
> Thanks,
>
> Jon
>
>
>
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