Thanks for all the feedback. No, I haven't tried the action yet but
I've saved your post for reference.
Chuck Norcutt
Moose wrote:
> Chuck Norcutt wrote:
>> The situation that brought this up was processing a lot of images in
>> camera raw and adjusting shadows and highlights to avoid clipping. But
>> my corrections were apparently too tight to the limits
> I think you misunderstand how H/S works. It automagically expands both
> ends of the histogram right to the end. Indeed, unless you set the See
> More Options box and set White Clip and Black Clip to 0, it will, by
> default, clip a tiny bit. Unfortunately, at least in CS2, you can't set
> White Clip to a negative number to reserve space at the end(s) of the
> histogram.
>
>> after further adjustments in PhotoShop (mostly LCE and further sharpening
>> for printing) I discovered too late that I had introduced a modest amount of
>> highlight clipping by accident.
> Once you have used S/H, there is no headroom at all. So it is no
> accident when LCE/USM clip, but to be expected. S/H is magic for some
> uses, but not without its price.
>> To avoid falling off the cliff I suppose I should simply not run too close
>> to the edge.
> I use Brightness/Contrast after S/H to gain headroom while adjusting the
> amount of shadow clipping I might want, if any. Then I can use LCE
> without clipping. the amounts to use in B/C are a matter of experience.
> Again, this in in an Action that puts it initially in a separate new layer.
>> I guess I'll have to pay more attention to the histogram in the future but
>> it would
>> have been nice to have a live preview of clipping in all brightness
>> altering functions ala ACR.
>>
> Did you try the Action I posted? It really works, almost instantly, to
> show if and where you have a problem. If you include the addition of a
> duplicate layer as part of the Action, you can just delete it when
> you've seen what you need to. And the warning is there when you are
> doing it - if you watch the little, live histogram as you work.
>
> Moose
>
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