Understanding RAW and Raw. With particular reference to Olympus cameras

Started Oct 10, 2012 | Discussions thread
Mingjai Senior Member • Posts: 1,371
Re: Understanding RAW and Raw. With particular reference to Olympus cameras

Bob Meyer wrote:

Mingjai wrote:

That reminds me--as a GH1 owner, an important discovery on this forum was that the GH1 RAWs have some NR cooked in to the RAW images by default. Paradoxically, setting the GH1's on camera NR setting to +1 or +2 eliminated NR in the RAW.

That's backwards. Setting NR to -2 eliminates NR, not +2 (or +1).

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I've stopped thinking in terms of "equivalent" focal lengths on m43. 25mm is what it is, and what it might be similar to on some other format doesn't matter to me any more. We need to learn what to expect from our current equipment, not keep mapping it to the old. No one refers to their 50mm FF lens as "equivalent to 80mm on MF."

You'd think it's backwards, but it's been documented by our fellow forum members. Setting the NR to +1 or +2 results in no NR being applied to GH1 RAW files, while setting NR to -2, -1, or even 0 adds NR to RAW files at higher ISOs.

Check out this post (and thread)


 Mingjai's gear list:Mingjai's gear list
Olympus E-M1 Olympus M.Zuiko Digital ED 9-18mm F4.0-5.6 Panasonic Leica Summilux DG 25mm F1.4 Olympus M.Zuiko Digital ED 75mm F1.8 Panasonic Leica DG Summilux 15mm F1.7 ASPH +16 more
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