Same pond ,different critter
-
- Posts: 4927
- Joined: Fri Sep 20, 2013 8:29 pm
-
- Posts: 263
- Joined: Tue Aug 20, 2013 2:39 pm
-
- Posts: 4927
- Joined: Fri Sep 20, 2013 8:29 pm
Greg wasn't kidding about this one - it was far more tricky to correct than I had been expecting. I corrected the colour cast in Lab, and had to resort to some strangely shaped curves (attached) to get the colours where I wanted them.
I tried applying a neutral pin to the bright area on the rock (right-hand side, halfway down), but wherever I put it I could still measure negative Lab values elsewhere in that patch - so I ended up deleting the pin and fixing it by hand.
Having sorted out the cool cast on the rock, it was (on the left-hand side) measuring as more magenta than yellow - something I didn't like - so I started tweaking the curves to fix that. I then found that the green leaves were too yellow, so my final B curve looks quite odd (to me) - but gets the job done.
I applied my Lab curves, and then returned (in CMYK) to CM - curving the Black channel through an inverted K mask.
To add some zing to the colours I then moved the Lab saturation slider to 1.25 (through a L channel mask, so that the rock picked up more saturation than the leaves). In Photoshop I used a layer mask to make sure that the central leaf was the only one picking up a saturation boost (to make the other two leaves look as if they were receding). I followed this up with a Hue/Saturation adjustment - moving the saturation to -20. This was only applied to the greenery on the left of the image (again using a layer mask).
Finally, the bug and main leaf were sharpened (USM: 200/0.4/0 - I used the Blend If Blending Option to cut the halos down).
All in all, more work than I was expecting... But fun :)
Lee
I tried applying a neutral pin to the bright area on the rock (right-hand side, halfway down), but wherever I put it I could still measure negative Lab values elsewhere in that patch - so I ended up deleting the pin and fixing it by hand.
Having sorted out the cool cast on the rock, it was (on the left-hand side) measuring as more magenta than yellow - something I didn't like - so I started tweaking the curves to fix that. I then found that the green leaves were too yellow, so my final B curve looks quite odd (to me) - but gets the job done.
I applied my Lab curves, and then returned (in CMYK) to CM - curving the Black channel through an inverted K mask.
To add some zing to the colours I then moved the Lab saturation slider to 1.25 (through a L channel mask, so that the rock picked up more saturation than the leaves). In Photoshop I used a layer mask to make sure that the central leaf was the only one picking up a saturation boost (to make the other two leaves look as if they were receding). I followed this up with a Hue/Saturation adjustment - moving the saturation to -20. This was only applied to the greenery on the left of the image (again using a layer mask).
Finally, the bug and main leaf were sharpened (USM: 200/0.4/0 - I used the Blend If Blending Option to cut the halos down).
All in all, more work than I was expecting... But fun :)
Lee
- Attachments
-
- aleafabug_lh-jpg (260.38 KiB) Viewed 12617 times
-
- dragonfly-lab-acv
- (90 Bytes) Downloaded 580 times
-
- dragonfly-wgcmyk-acv
- (58 Bytes) Downloaded 611 times
-
- Posts: 4927
- Joined: Fri Sep 20, 2013 8:29 pm
-
- Posts: 4927
- Joined: Fri Sep 20, 2013 8:29 pm
-
- Posts: 4927
- Joined: Fri Sep 20, 2013 8:29 pm
-
- Posts: 4927
- Joined: Fri Sep 20, 2013 8:29 pm
-
- Posts: 11
- Joined: Thu Jun 03, 2010 8:05 pm
Another interesting challenge which was not so easy as it first looked! I did the main tweaking in lab to increase the saturation and improve detail in the leaf while not darkening the insect too much and darkening the light coloured background. I also tried to give the leaf a translucent surreal look. I added a bit of red in rgb to warm the tone. The picture can be improved by cropping. Thanks for letting me have a go, I enjoyed the challenge!
Kind Regards
Chris
Kind Regards
Chris
- Attachments
-
- alfaleafbug-screen-jpg (111.83 KiB) Viewed 12617 times
-
- aleafabug_chris-b-jpg (150.57 KiB) Viewed 12617 times
-
- aleafabug-jpg-lab-4-acv
- (78 Bytes) Downloaded 625 times
-
- aleafabug_chris-jpg-rgb-acv
- (58 Bytes) Downloaded 581 times
Return to “Curvemeister 101 June 2010”
Who is online
Users browsing this forum: No registered users and 3 guests