Pat David's portrait and LightZone


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Jacal
Pat David's portrait and LightZone

Pat David contributed a beautiful Mairi's portrait on PIXL.US forum "to share with everyone to work on". My attempt to make something decent using LightZone was completely unsuccessful. I had to disable raw tone curve to even begin with something manageable. (Although some other samples from this camera look OK in LightZone; this one is quite specific.)

 

I have no talent for photography, so I am inviting you to try to edit this ORF image. Is there something wrong with LZ tone curve? I would like to see a nice looking _lzn edit of this photo. On that forum, if good enough, LightZone is hardly ever mentioned there.

 

Best whishes,

 

Mart

 

sfink16
My Attempt

I tried to edit via LZ and here is my result --> http://www.pbase.com/sfink16/image/162728063/large

 

The first thing I did was change the raw curve from RGB to luminosity.    It got rid of the unnatural auburn hair look of the model.  The second thing I did was change the EV by +2 in the RAW Adjustments module.  The WB probably needs some work as well but I haven't tried much with it yet.  Next I did a soften skin style followed by some noise reduction.  Lastly came the sharpening.  I chose High-Pass style.

 

 

 

Steve

larshenrikoern
Nice a Photo Challenge

Nice a Photo Challenge

 

I have myself Olympus Em-5. This is with my standard settings. I have added the lzn_file so everyone can see my settings overlaid with a transparent copy in b&w. Lets have more of this

 

Links:

https://www.dropbox.com/s/kf63ormo6iyjyzx/Mairi_Troisieme-1.jpg?dl=0

and lzn_file

https://www.dropbox.com/s/7mya4xp443apozx/Mairi_Troisieme_lzn.jpg?dl=0

 

and one extreme for the fun of it

https://www.dropbox.com/s/qxydll2rndm18fc/Mairi_Troisieme-1-1fun.jpg?dl=0

 

Have a nice day

Jacal
lanshernikoern,

fine, it is nice to see how other people do things. Tomorrow I will try to improve my version.

Being unhappy with LightZone's default rendering of this picture, I made a little comparison. Here is the link.

I recommend RawTherapee (even occasional) users to test Morgan Hardwood's pp3 file from the original PIXLS.US thread. It shows how things can be done in very elegant ways, when one knows how to use available tools.

Be good!

Mart

 

And post your fine edits on the original pixls.us thread; a lot of things are going on there.

sfink16
RawTherpee Is Resource Hog

I think I'll stay away from PIXLS.US since they seem to love RawTherpee.  Every image in that thread is badly underexposed(no visable detail on sweater).   Not only is RT a resource hog (especially tone mapping), it's cumbersome to use and does not produce results as good as I can get with LZ or Darktable.  

 

Steve

Jacal
Steve,

I would like to have the lzn file of your edit, to reproduce it at 100 % and see the details.

I don't "love" RawTherapee, but it has the most active threads on pixls.us and a fast development, I'm using this tool when I don't need local editing, and I'm also trying to use darktable, even the "hostile" Partha's build for Windows.

There are interesting discussions about open-source development on pixls.us site, and many excellent guides by Pat David and other authors, so I still recommend this source.

Mart

sfink16
Mart,

I've been busy today and expect to be tomorrow but will get to your reequest as soon as I can.  

sfink16
Mart, LZN Shares

As it turns out, I did very little to the images to better see the sweater color/detail.  I do believe that the LZ Raw Tone Curve is incorrect for that camera/lens/image.  The RGB selection appears to mess it up badly.  Noitce her hair is quite different to the original ORF raw image.  Changing it to the Luminosity selection fixes it (not sure why this happened).  Here is the LZ raw conversion with the simple change of the EV to +2, everything else is the same.

 

https://www.dropbox.com/s/n9f6wiviaacugqx/Mairi_Troisieme_lzn-2.jpg?dl=0

 

Here are the change I made in addition to changing the EV to +2.  These are changing the raw curve from RGB to Luminosity as I described above plus some additional noise reduction and an attempt at sharping with High Pass.

 

https://www.dropbox.com/s/6bvvcmmksq0a30l/Mairi_Troisieme_lzn.jpg?dl=0

 

I'm not sure it needs much more edits but I believe it's a good start.

 

Steve

Jacal
Thank you, Steve,

I will look at this in the evening. Have a nice day!

Mart

Oscar J. Ortubay
Hi everybody,

I know this is a quite old post, but I saw it today and I couldn't resist to give it a try. Far from being an expert photographer, I've been using lightzone for a while and has become my favourite post-processing tool. Thank you all for your efforts to maintain this project alive. Here is my jpg:

https://drive.google.com/file/d/0BxMShzxobnFcMFE1YU9IRGEwMGM/view?usp=sh...

 

Óscar.

Jacal
Hi, Óscar,

this is nice and precise work. (And "once in the future" we should have a permanent repository of raw and lzn files with different editing approaches and techniques. Looking at other user's work is a great way of learning, not only for beginners.)

Anyway, peeping at your picture at 100 % reveals the weird transitions between darks and midtones, very obvious on the lady's face, which caused my ranting from the original post. I'll see, if I can make an usable alternative raw tone curve for this camera.

Be well!

Mart

Jacal
Alternative tone curve

Here is a quickly built alternative tone curve for this camera:

link

It needs some fine-tuning, but is already more smooth and gives nicer transitions in the shadows.

Here is the comparison, default vs. J2 (that's my curve). Óscar's version of the photo would need some adjustments now, but also looks better at 100 %, I believe.

comparison

I have only tested it on this portrait and one "city hall" example, but it looks promising.

Here it is compared to two other editors:

link

Good night!

Mart

Oscar J. Ortubay
Thank you, Mart.

I agree, with your curve transitions look much better. I've found interesting your comparison with other editors, too. That future repository you mentioned would be a great way to learn, and "challenges" as this one too.

Good night.

Óscar.

rdo
Finally:)

It is funny that i saw the original thread at PIXL.US long time ago. My initial LZ processing was terrible and i'm playing with this portrait since then:)

Here is my 7th attempt on the processing, I think it is finally something that i like. Here is the jpg result  

https://s8.postimg.org/pxwb8ah8l/Mairi_Troisieme_out-1.jpg and the LZN with the processing instructions https://s13.postimg.org/g1ycpla1z/Mairi_Troisieme_lzn-7.jpg 

I used mostly the blending modes to do the heavy processing. Although i often don't fully understand what exactly are they doing i found them quite powerfull, and the most important for me is that they avoid the ugly color casts that LZ often produces with skin tones.

Jackal - I totally agree about the idea to have a way to share the different processing techniques. Probably even a separate forum section. It will be quite usefull for everyone to share his techniques and to receive feedback or to check how are others acchieving the different processings.

Oscar J. Ortubay
Interesting...

Very nice work. I found especially interesting two things: 1) the way you used four!!! sharpen tools without hard noise issues. And 2) the fact that I didn't see any raw tone curve in your file. I thought something was wrong when downloading your lzn-jpeg, but, just in case, I tried myself to process the picture with no RTC at all and here is the outcome:

https://drive.google.com/file/d/0BxMShzxobnFcSm9ZclYtLWU1ejA/view?usp=sh...

In summary: when I tried to process this photo with the "original" RTC, I had a lot of problems with color transitions. Mart's new tone curve was a good solution. Later I saw Steve's advice in order to change the raw curve from rgb to luminosity, which made things look better too. So I was ready to conclude that it was a matter of the tone curve, but now I have realized that it's possible to process the picture with no RTC and have reasonably good results. I didn't even know this was possible. I guess I'll have to investigate if there are relevant differences about using or not RTC in this picture and others.

rdo
Thanks:)

The lightzone Sharpen tool is like a swiss army knife - it can do almost everything, without the coffee:)

If you use the Sharpen with big Amount and small Radius it will sharpen the smaller details. If you use it with small Amount (around 10) and big Radius (near the max) - it will enhance the local contrast.

I found that combining the Sharpen tool with blending modes (Multiply or Screen) i can achieve some quite nice results. To be honest i still don't fully understand this magic and I'm still experimenting with this.

 

As for the RTC - i have mixed feelings about it. Sometimes it can save you some work, because it gives the images near SOOC feeling, but very often it produces color transitions that i really don't like. I found the RTC really bad for A7 cameras, while for nex-5 the RTC is almost fine. In any case, when you remove the RTC - it will give you flatter tone curve and you can save some over/under-exposed images. Thankfully in LightZone it is very easy to create your own camera profiles with different default settings.

larshenrikoern
Thank you for the tip

Thank you a lot. The tip with sharpening with big radius and small amount combined with another with the oposite. This is making a lot of my pictures much better. I have not used that combination before.

 

I am sure there are a lot of other things i do not know. Most of us are probably using just a few of the cents.

 

Have a nice day

Jacal
Radius

in the sharpening tool goes up to 500, this is an unusually wide range. The local contrast style, for instance, is an unsharp mask with radius 50, amount 15, threshold 20. I also tend to limit it mostly to midtones, using an additional luminosity mask.