7D file naming _MG_xxxx

Started Nov 12, 2010 | Discussions thread
Severian The Lame
Regular MemberPosts: 492Gear list
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Re: Is it irrelevant really ?
In reply to KariP, Nov 13, 2010

KariP wrote:

Books and manuals are not giving very clear info about this...

The usual recommendation in books is that IF you use some more or less sophisticated PP the AdobeRAW color space is "better".

  • you mean that RAW captures / contains every color info possible - and color space can be chosen later to whatever you need/want ?

Totally irrelevant. RAW files don't include embedded profiles.

From the Adobe Lightroom 3 manual page 27:

A color space describes a range or gamut of colors. Various devices in your photographic workflow have different color gamuts in which they can record, store, edit, and output photos. A color profile defines a color space so that Lightroom knows how to manage and convert colors in your photo .

Raw photo files do not have embedded color profiles in Lightroom. For raw files, the Develop module assumes a wide color space based on the color values of the ProPhoto RGB color space. ProPhoto RGB encompasses most colors that cameras can record .

A color profile is also defined by a gamma value, or more accurately, its tonal response curve. The tonal response curve defines how tonal values in the raw image are mapped. To provide useful information in the histogram and RGB value display, Lightroom assumes a gamma value of approximately 2.2. More accurately, it uses a tonal response curve similar to the tonal response curve of the sRGB color space .

While Lightroom uses a tonal response curve to provide information for the histogram and RGB values, it manipulates the raw data before it is tone mapped. Working in this linear gamma avoids many of the artifacts that can result in working with a tone-mapped image .

The Library module stores Low and Medium quality previews in the Adobe RGB color space, and High quality previews in ProPhoto RGB. These previews are also used when printing in draft mode .

For rendered files such as TIFF, JPEG, and PSD files, Lightroom uses the image’s embedded color profile to display the image, histogram, and color values. If the image doesn’t have a profile, Lightroom assumes the sRGB profile, and the image may not look as expected on your monitor .

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