[argyllcms] Re: help with camera profile
- From: adam k <aak1946@xxxxxxxxx>
- To: "argyllcms@xxxxxxxxxxxxx" <argyllcms@xxxxxxxxxxxxx>
- Date: Wed, 1 Aug 2012 09:00:56 -0400
I have it, but don't know how to do it in LR.
A Kielcz
On Aug 1, 2012, at 8:58 AM, Alan Goldhammer <agoldhammer@xxxxxxxxxxx> wrote:
> The Passport has software that does this for you. You need to buy it.
>
> -----Original Message-----
> From: argyllcms-bounce@xxxxxxxxxxxxx [mailto:argyllcms-bounce@xxxxxxxxxxxxx]
> On Behalf Of adam k
> Sent: Wednesday, August 01, 2012 8:56 AM
> To: argyllcms@xxxxxxxxxxxxx
> Subject: [argyllcms] Re: help with camera profile
>
> Alan,
> How do you calibrate camera in LR4?
> Thank you!
>
> A Kielcz
>
> On Aug 1, 2012, at 8:51 AM, Alan Goldhammer <agoldhammer@xxxxxxxxxxx> wrote:
>
>> Yes, the Passport does contain the identical patch, it's just more
>> convenient and it also has some other valuable tools. You can also
>> use the X-Rite software and Adobe Lightroom to do a camera calibration
>> which will be specific for your camera. The effects are quite subtle but
> noticeable.
>> With respect to the dynamic range of the camera, yes this can be an
>> issue which is why so much has been written about exposing to the
>> right (ETTR) so that you move the histogram more towards white
>> clipping. The problem is that the camera manufacturers set the
>> software to render the histogram as they see fit and you may end up
>> losing 1/3 to 1 full stop of information this way. Two ways to get
>> around this are 1) bracketing so that you get several images with a
>> range of exposures or 2) setting your camera up for Uni-White Balance
>> (UniWB) that will counter what the camera maker has set up. You can
>> also extend the dynamic range by HDR as long as you don't go overboard
>> with wild colors. Photoshop can do this and there are other shareware
> software packages as well.
>>
>> Alan
>>
>> -----Original Message-----
>> From: argyllcms-bounce@xxxxxxxxxxxxx
>> [mailto:argyllcms-bounce@xxxxxxxxxxxxx]
>> On Behalf Of Alberto Ferrante
>> Sent: Wednesday, August 01, 2012 7:03 AM
>> To: argyllcms@xxxxxxxxxxxxx
>> Subject: [argyllcms] Re: help with camera profile
>>
>>
>> I was actually planning to get a ColorcheChecker Passport: it has
>> pretty much the same price and it could be useful to me not only for
>> checking the profile. If I understood well, the 24-patch "classic"
>> target should be the same as the standard 24, just smaller... Is that
> correct?
>>
>>
>> A question I was asking myself: cannot the problems with
>> shadows/highlights be related with the dynamic range of the camera?
>> Specifically, the dynamic range of the target is roughly 8 stops (gray
>> patches from full black to full white on paper). Most cameras, in raw,
>> can register more than 8 stops of dynamic range and, therefore, the
>> model built in the profile will not cover directly the missing parts
>> (it may cover them through some kind of interpolation, that may not
>> correspond to the reality)... Am I wrong?
>>
>> Thanks again for the great help!
>>
>> Regards,
>> Alberto
>>
>>
>
>
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