Re: hue shift with Photoshop curves
Re: hue shift with Photoshop curves
- Subject: Re: hue shift with Photoshop curves
- From: Andrew Rodney <email@hidden>
- Date: Tue, 17 May 2011 11:42:09 -0600
This is a long and unnecessary controversy. When in Photoshop, using the RGB curves, there is an alteration in saturation by design (by Thomas Knoll decades ago). In a nutshell, it looks better, its what most users expect. It took more work to code and was done by Thomas for this reason. There’s been this urban legend that this is somehow a problem or a bad idea. That curves should be manipulated individually or in Lab (assuming you don’t mind the time hit and data loss, certainly in 8-bit per color docs). The solution is quite easy as Mark explained. Use the Luminosity Fade command or an adjustment layer with the same blending mode. You now have control over each option. So it doesn’t matter if the working space is well behaved or not, the alteration of saturation is a feature, not a bug you can use if you wish or not use if you wish.
Its all very well explained by Mark here:
http://www.luminous-landscape.com/essays/Curves.shtml
Andrew Rodney
http://www.digitaldog.net/
On May 17, 2011, at 11:32 AM, edmund ronald wrote:
> aRGB
>
> On Tue, May 17, 2011 at 6:58 PM, Scott Martin <email@hidden> wrote:
>
>>
>> On May 17, 2011, at 11:28 AM, Dick Busher wrote:
>>
>>>> Every time I use the PS curves tool in RGB mode I see thing shift in
>> hue. I
>>>> don't want a hue shift, I expect a perceived brightness shift at the
>> same
>>>> hue. This is CS5. WTF?
>>
>> Just to check - your document is in a gray balanced working space right
>> (sRGB, AdobeRGB, etc)? Not a device space?
>>
>> Scott Martin
>> www.on-sight.com
_______________________________________________
Do not post admin requests to the list. They will be ignored.
Colorsync-users mailing list (email@hidden)
Help/Unsubscribe/Update your Subscription:
This email sent to email@hidden