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Author Topic: DPP better than ACR?  (Read 61284 times)

xpatUSA

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Re: DPP better than ACR?
« Reply #60 on: July 31, 2013, 11:22:48 AM »

Quote from: elied
Is there a connection between the camera profile and image sharpness?
No, there is not.  The choice of profile in the Profile popup in the Camera Calibration panel affects color (and possibly tone) only.
Thanks for the clarification, Eric.

Ref. my side discussion with Vladimirovich, do different camera profile selections (esp. with different profiles) affect the slider settings? In ACR 5.4 it seems that a camera selection provides a base, thereby affecting the histogram and the on-screen rendition but not the slider settings which remain "on top" of that base.

I realize that if a sidecar file exists then than is applied or, equally, any embedded setting in e.g. a TIFF. Thus, on opening, the sliders are are pre-positioned by ACR, as it were but, if one then changes the profile, the slider stay in position.



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best regards,

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Vladimirovich

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Re: DPP better than ACR?
« Reply #61 on: July 31, 2013, 12:42:44 PM »

No, there is not.  The choice of profile in the Profile popup in the Camera Calibration panel affects color (and possibly tone) only.

Thanks for the clarification, Eric.

Ref. my side discussion with Vladimirovich, do different camera profile selections (esp. with different profiles) affect the slider settings?

I just referenced you to a topic where Eric Chan himself stated that it does (White Balance sliders), for as long as 2 profiles have different matrices that are used for WB in Adobe's converters...


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xpatUSA

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Re: DPP better than ACR?
« Reply #62 on: July 31, 2013, 01:29:31 PM »

I just referenced you to a topic where Eric Chan himself stated that it does (White Balance sliders), for as long as 2 profiles have different matrices that are used for WB in Adobe's converters...

Thank you, Vlad.

Following your earlier instruction, I downloaded and installed dcpTool. I de-compiled two of the profiles that, in my test with ACR 5.4, did NOT change the As-Shot WB sliders.

So in answer to your earlier question in this thread, I am now sure that the color matrices were different  ;D

Might be a clue [as to why the WB sliders did not move] here:

These two tags were the same in each profile:

<CalibrationIlluminant1>17</CalibrationIlluminant1>
<CalibrationIlluminant2>21</CalibrationIlluminant2>
« Last Edit: August 02, 2013, 01:15:54 AM by xpatUSA »
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best regards,

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madmanchan

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Re: DPP better than ACR?
« Reply #63 on: July 31, 2013, 07:17:29 PM »

Ref. my side discussion with Vladimirovich, do different camera profile selections (esp. with different profiles) affect the slider settings? In ACR 5.4 it seems that a camera selection provides a base, thereby affecting the histogram and the on-screen rendition but not the slider settings which remain "on top" of that base.

Yes, the choice of camera profiles effectively determine a baseline.  And the behaviors of the sliders and controls (e.g., tone curve controls) are built on top of these baselines.  So choosing a different profile will effectively switch the starting point for further edits.
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JRSmit

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Re: DPP better than ACR?
« Reply #64 on: August 28, 2013, 12:22:17 PM »

Yes, the choice of camera profiles effectively determine a baseline.  And the behaviors of the sliders and controls (e.g., tone curve controls) are built on top of these baselines.  So choosing a different profile will effectively switch the starting point for further edits.
Good to read this. I always set a camprof as first development a tion. Then go from top to bottom. In my LR course i give i train the participants to do it also as first thing.
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