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by leeharper_admin
Wed Jul 03, 2013 10:06 am
Forum: Interesting Images
Topic: My eyes are failing or is the end nigh
Replies: 19
Views: 5722

Morning Chris,<br /><br /><blockquote>If we assume that the Reilly formula is correct, then the line must logically work for brighter tones as well as shadows!  (We could have picked a brighter instance in the first place and then seen that it falls on the darker one down the Reilly line).</blockquo...
by leeharper_admin
Tue Jul 02, 2013 4:12 pm
Forum: Interesting Images
Topic: My eyes are failing or is the end nigh
Replies: 19
Views: 5722

Hi Chris,<br /><br />I have read through Paul Centore's article - thank you for the link. Centore's rule of thumb then is that the chroma of an object decreases in a linear fashion from <i>the local colour of the object in question</i>. That's reasonable, and his examples are convinci...
by leeharper_admin
Tue Jul 02, 2013 12:26 pm
Forum: Interesting Images
Topic: My eyes are failing or is the end nigh
Replies: 19
Views: 5722

Hi Chris,<br /><br />Thank you for your reply, your comments are very helpful.<br /><br />Frank Reilly's advice <i>seems</i> to conflict with the Munsell system; either that or I'm getting in a muddle. I've attached an image that I found online. It demonstrates that chroma should not ...
by leeharper_admin
Tue Jul 02, 2013 11:18 am
Forum: Interesting Images
Topic: My eyes are failing or is the end nigh
Replies: 19
Views: 5722

<blockquote>I reckon we have flogged this poor rose to death!</blockquote><br /><br />Oh, I wouldn't be so quick to say that ;)<br /><br />Your screenshot is very interesting Chris. I hope that you will be able to answer a few questions that I have about it:<br /><br /> <ul class="bbcode_list">...
by leeharper_admin
Mon Jul 01, 2013 3:16 pm
Forum: Interesting Images
Topic: My eyes are failing or is the end nigh
Replies: 19
Views: 5722

Greg,<br /><br />Your correction looks great ;)<br /><br />I loved the way you'd made the rose look, but thought that the background wasn't quite right, so I cheated - I used your correction as a starting point. I've just darkened and desaturated the background a touch, to separate th...
by leeharper_admin
Tue Jun 04, 2013 7:27 pm
Forum: Tips and Tricks
Topic: Using CM to accomplish some of the Picture Postcard Workflow Goals.
Replies: 14
Views: 4344

No problem Ganna - glad to help  :)<br /><br />Incidentally, stretching the tonal range of the image without neutralising the shadows/highlights (and potentially introducing a colour cast), is really easy to do in Photoshop - it's an automatic adjustment: <b>Image > Auto Contrast</b><br /><br /...
by leeharper_admin
Tue Jun 04, 2013 2:56 pm
Forum: Tips and Tricks
Topic: Using CM to accomplish some of the Picture Postcard Workflow Goals.
Replies: 14
Views: 4344

Hi Doug,<br /><br />Dan suggests beginning by removing colour casts from the image, using curves, in RGB.<br /><br />The advantage of removing casts in RGB is that most colour casts are not even across the brightness range of the image (which is why setting white balance in camera/during Raw convers...
by leeharper_admin
Sun May 19, 2013 7:25 pm
Forum: Tips and Tricks
Topic: Hue Clock "Time Guide"
Replies: 10
Views: 4666

Thank you for the link to your article Chris, it was very interesting. Greg and I have worked on this idea of limiting saturation boosts to specific areas of luminance (also inspired by Munsell's work) using a special luminance mask; you may have seen Greg use it in some of his videos. I think,...
by leeharper_admin
Sat May 18, 2013 2:26 pm
Forum: Tips and Tricks
Topic: Hue Clock "Time Guide"
Replies: 10
Views: 4666

Hi everyone,<br /><br />This is a really interesting and important topic. There are certain objects where our expectation about their color requires that our corrections put them into a specific region of the hue clock. Obviously skin tones are a clear example, but the list of objects we need to be ...
by leeharper_admin
Tue Oct 16, 2012 10:33 am
Forum: Equipment
Topic: Dynamic Range, Zones and things
Replies: 5
Views: 2185

Hi Chris,<br /><br />I used Sekonic's Exposure Profile Target (<b><a href="http://www.sekonic.com/Products/All/Accessories/Sekonic-Exposure-Target-II.aspx" class="bbcode_url">http://www.sekonic.com/Products/All/Accessories/Sekonic-Exposure-Target-II.aspx</a></b>) to evaluate the dynamic range o...

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