On 17/02/2013 13:06, Savageduck wrote:
> On 2013-02-16 17:14:04 -0800, Alfred Molon <> said:
>
>> In article <2013021615450475249-savageduck1@REMOVESPAMmecom>, Savageduck
>> says...
>>> The Lightroom adjusted RAW file (usually imported and converted DNG) is
>>> exported to the external editing SW (let's just say as in my case CS5)
>>> as a TIFF in 16-bit ProPhoto RGB with the Lightroom adjustments applied.
>>
>> That would mean a file size of for instance 144MB for a 24MP camera. Are
>> you really saving processed RAW images at 6 bytes/pixel? Or are you
>> saving as ProPhoto JPEGs?
>
> That is only if you are making additional adjustments with an external
> editor such as CS5. All other LR edits to DNGs are recorded as
> non-destructive data within LR.
> Fortunately for me I am still shooting with my D300S. So If I take one
> of my latest SI submissions I start with a 4288x2848 DNG @ 36.8MB with
> all my RAW and LR adjustments. After exporting to CS5 for a few other
> adjustments including a crop, I have a 4500x3000 TIF @ 81.1MB. I could
> have saved back to LR4 as a PSD and saved a bit of HDD space. Both
> retain their ProPhoto RGB colorspace, and I can print those without
> issue to my R2880 using the matched ICC profile for the printer + paper.
>
> Also, HDD space is not unreasonable today. I am certainly not going to
> share or distribute fat TIFs unless I really have to.
>
> Then I export the saved TIF converting it to an 8-bit, sRGB JPEG (and
> still at 360 ppi and able to produce a pretty decent print)ending up at
> 10.6MB. I resize that JPEG for the SI getting it down to 384KB, 1280x862
> and still at 360 ppi switching to 72 ppi makes no difference to the file
> size or the viewer's experience.
>
>> Which DSLRs offer the ProPhoto colourspace for their JPEGs?
>
> None that I know of, and I doubt there ever will be. The "in camera"
> colorspace selection is mainly for the benefit of the camera generated
> JPEGs.
> Consider that the RAW file is going to be colorspace neutral until you
> process it in the RAW processing software of your choice and use
> whatever options it provides you. Adobe allows you the choice to decide
> between sRGB, Adobe RGB(199
, or ProPhoto RGB in ACR, or import and
> convert to DNG 16-bit ProPhoto with Lightroom.
>
> I currently like using the Lightroom 4 to CS5 workflow as that gives me
> the 2012 RAW conversion engine which I do not have with CS5. The benefit
> of using a Photoshop only workflow is not having to deal with the LR to
> CS exchange step. If I had CS6, that version of ACR would give me the
> same RAW processing capability as I get with LR4.
>
>
I certainly had problems when printing with my R1800 printer when using
Ilford paper, could never get the balance correct, even soft proofing
etc. This paper needed the Ilford profiles as the print looked muddy,
which could not be manually corrected.
I now mostly rely on Epson paper and inks and use there supplied profiles.