LAB Colour

[Alpha_7]

I just had my first real play with LAB colour, and I thought I was doing well but when I went to save it I thought I should convert back to sRGB and it appeared like it undid a lot of my work in LAB, have I gone about the process wrong ?

This was the end result of my trial of Lab

[johnd]

You'd have to be happy with the result Craig.
Sorry, I don't know anything about LAB colour, never played round with it.
But the image looks great. Pity about the jet lights though.
Cheers
John

[Alpha_7]

You'd have to be happy with the result Craig.
Sorry, I don't know anything about LAB colour, never played round with it.
But the image looks great. Pity about the jet lights though.
Cheers
John

I actually spent 2-3 hours taking shots here, so I do have some without the lights, I just randomly picked this one to play with. Perhaps Big V can enlighten me on LAB colour he seems to be a big fan of it.

[NikonUser]

I've also started playing with LAB colour (I've got the LAB colour book) and converting back to RGB doesn't have any negative effect...

How do you convert back?

Image -> Mode -> RGB

Paul

[Willy wombat]

Are there any good online guides for LAB?

[NikonUser]

Are there any good online guides for LAB?

Not that I have found.

The only tip I've found online is the one I posted a few weeks ago in the PostProcessing forum.

Paul

[greencardigan]

What can you do in LAB that you cant do in RGB?

Or what can be done easier/better in LAB?

[NikonUser]

I've only just started reading the book...

but apparently any colour manipulation can be done faster/better in LAB. There are some pretty convincing examples.

Paul

[Alpha_7]

Perhaps this should be moved to the PP forum (mods?) so that the answers can help others.

[Geoff]

DONE!

[big pix]

Did you flatten the image before changing to sRGB web space.......... which will give you a lot less colour than LAB colour......

[Alpha_7]

I don't think I flattened it no.

(I apologise for getting Big V and Big Pix mixed up, I think)

[leek]

Are there any good online guides for LAB?

You'll find a lot of good tips and examples in this thread on the smugmug forums - Digital Grin

http://www.dgrin.com/showthread.php?t=18203

As far as I can gather, some of the moderators and users of Digital Grin have read through Dan Margulis' book "Photoshop LAB Color" and have recreated the examples from each chapter in separate threads on the forum... A lot to read, but you'll probably find the knowledge that you seek...

[MCWB]

http://www.dgrin.com/showthread.php?t=18203

OK, my head just exploded , but thanks, that's a sensational read!

[greencardigan]

http://www.dgrin.com/showthread.php?t=18203

OK, my head just exploded , but thanks, that's a sensational read!

I'm not waiting for a rainy day.

[big pix]

in photoshop..... set up actions to get into LAB colour........and back to RGB....... makes it very quick.......

[Alex]

Dan Margoulis's book is a great resource on using LAB colour.

Alex

[Justin]

that digital grin link - there is weeks worth of messing around to be had with those tips, amazing, really good compression of the key elements to get the job done.

[Grev]

This is interesting, anybody have more information?

[Viz]

I believe that a LAB curve samurai, can achieve way more with one curves layer. All photoshop calculations are in LAB anyway, they are converted to RGB/CMYK in the interface for user convenience. Though sometimes for daylight blue cast, it is so quick and easy to just touch up the blue channel in RGB.

I really love how colour theory has evolved since old Itten.

[robw25]

sharpening in lab mode is better too ! i bought dons book 6 months ago .... it's full on

cheers rob

[NJ]

just reading this thread and then the DGrin forum (i have only had a look at the first part) and i have had a go at it. this is my effort. the changes arent huge but they are noticable.