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Re: [OM] IMG: More Experiments with ETTR

Subject: Re: [OM] IMG: More Experiments with ETTR
From: "Jim Nichols" <jhnichols@xxxxxxxxxxxxx>
Date: Fri, 9 Sep 2011 09:57:01 -0500
Thanks for the inputs, Chuck.  I will see if I can make selections in PSE 6.

Jim Nichols
Tullahoma, TN USA
----- Original Message ----- 
From: "Chuck Norcutt" <chucknorcutt@xxxxxxxxxxxxxxxx>
To: "Olympus Camera Discussion" <olympus@xxxxxxxxxxxxxxxxx>
Sent: Friday, September 09, 2011 5:06 AM
Subject: Re: [OM] IMG: More Experiments with ETTR


> I'm currently evaluating PSE9 for a friend.  As in full PS just use the 
> lasso or other selection tool to select an area.  Then press CTRL-L to 
> show a histogram of that area.  Use the pull-down menu to select views 
> of the individual RGB channels if desired.
> 
> But being able to get a detailed view of the histogram in PS doesn't 
> address my concern.  I want to see it in-camera so I know if my current 
> exposure settings will result in blown highlights.
> 
> The 5D is getting pretty long-in-the-tooth as far as its small LCD 
> display is concerned.  Maybe a more modern camera with 3" wide OLED will 
> show me what I want to know.
> 
> One thing I do not like about ACR is that the histogram and intensity 
> readouts do not show the headroom that is available in the raw file. 
> For example, yesterday, while working on photos of dancers under 
> strongly colored stage lights, the histogram and the cursor readout 
> (showing 255) told me that the red channel was blown in some parts of 
> the image.  Yet, since it's a raw file there was still adjustment room 
> there.  Adjusting the exposure downward allowed me to get the apparently 
> blown areas down to a max of 248.  I want the ACR histogram to say 262 
> if there's adjustment room available.
> 
> Chuck Norcutt
> 
> 
> On 9/9/2011 2:26 AM, Moose wrote:
> 
>>> I now understand  Chuck's comment that he would like to see a
>>> magnified image of the right side of the histogram.
>>
>> Can you select areas in PSE? In PS, select the area of concern, and
>> view the histogram for just that area. That isn't strictly the top
>> end magnified, but it does show any problems.
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