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Re: [OM] Scanning Question

Subject: Re: [OM] Scanning Question
From: Tina Manley <images@xxxxxxxxxxxxx>
Date: Tue, 14 Jan 2014 18:17:39 -0500
Good reasons for DNG:  http://dpbestflow.org/data-validation/dng-validation

Since my Leica files are all native DNG as Raws, I started out saving
everything as DNG and don't regret it at all.  Files are smaller with no
losses and validation is a plus.

It's DNG for me!

Tina


On Tue, Jan 14, 2014 at 5:53 PM, Jon Mitchell <olympus@xxxxxxxxxxxxxx>wrote:

> Hi Ken,
>
> Thanks for the confirmation.  Guess I'm off to buy a whopping big external
> hard drive (well, 2 - got to have a backup !).
>
> I'm intrigued by your thoughts on DNG vs TIF.  I went for DNG as that is
> what I save my e330 files to on import to LightRoom.  However, thinking
> about it, my logic there is that there is a backup of the .orf file kept
> elsewhere and I also embed the .orf file in the .dng - so I can always get
> the .orf file back if I need to.  Tried that with a .dng from VueScan and
> it
> says there are no embedded files.  Looks like I am at risk there from the
> DNG file format.  My experiments seem to show that when you ask VueScan to
> save the file as RAW, it saves this as a TIF anyway - so what is the
> difference in just saving it as TIF (assuming I leave all the Colour &
> Filter settings alone) ?  Is the "RAW" TIF, as the name implies, just the
> RAW data from the scanner - but the non-RAW TIF has had some adjustments
> done ?  That would tie in with the exposure differences I have seen so far.
>
> What started off as a simple "what resolution and bit depth is good enough"
> question has quickly become so much more !  Thanks guys - I am learning
> more
> here than I have playing with VueScan, the Minolta, and LightRoom.
>
> Thanks,
>
> Jon
>
>
>
> -----Original Message-----
> From: Ken Norton [mailto:ken@xxxxxxxxxxx]
> Sent: 14 January 2014 22:04
> To: Olympus Camera Discussion
> Subject: Re: [OM] Scanning Question
>
> I agree with Tina. Scan the snot out of those slides. You may never do
> it again. Contrary to popular belief, a 2700dpi scan is NOT getting
> everything off of the slides and negs. If this was true, then 5-6MP
> cameras should all be what is necessary from our digital cameras.
> Logic says to get everything possible from the scan and do your
> downsizing in software IF necessary.
>
> Also, one thing that might be of interest. If you scan at the maximum
> resolution and on the Filter Tab, select Light Grain reduction, the
> files will resize downward better. Be careful with it as it will muddy
> stuff up sometimes, but I'm finding that it is giving me a CMOS
> digital camera look. But, there is a trick here...
>
> Maybe I will spit out some samples from the Nikon.
>
> As to using DNG for save mode, I'm a little ambivilent about that. DNG
> is effectively TIF in the way that Vuescan works. Like it or not, DNG
> is still not a universal standard. The twist to this is that if you
> save the raw scan, it pretty much ignores the settings on the Filter
> and Color tabs. If you open the file (Source on the Input tab) you can
> reprocess the image using the secret sauce built into Vuescan.
>
> AG
> --
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>
>


-- 
Tina Manley
http:// <http://tina-manley.artistwebsites.com/>www.tinamanley.com
-- 
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