Re: Lightroom
Re: Lightroom
- Subject: Re: Lightroom
- From: John W Lund <email@hidden>
- Date: Tue, 10 Jul 2007 12:21:51 -0700
On 7/10/07, Andrew Rodney <email@hidden> wrote:
>
> On 7/10/07 11:50 AM, "Tim Vitale" wrote:
>
>> This may be the way it is looked at, but I understand that Lightroom uses
>> ProPhoto RGB
>> (D50@G1.8) at D65 and Gamma 2.2 for 16-bit processing, and will apply that WS
>> unless
>> another is chosen.
>
> Processing color space is linear encoded gamma using ProPhoto primaries.
> Histogram and numbers are ProPhoto primaries and an sRGB TRC (kind of 2.2
> gamma encoding). Then, as mentioned, you have an option for three encoding
> color spaces of which the numbers have no direct correlation. In ACR, the
> numbers are directly based on the encoding color space set but that's not
> how it works in LR.
>
-- an unfortunate decision, IMHO.
LR has many great features, but...
It does not give the user feedback on what exported RGB values will be, so
while 'editing', things like possible saturation clipping remain unknown.
And there is no possibility of soft-proofing.
I don't find readouts of percentages of 'melissa RGB' color space to be very
helpful (yet).
Regards,
John
JWL Images
Emeryville, CA
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