In RT , when I want to know where is clipping I use, as you, the clipping indicator and for what channel is clipped the preview channel button at the top of the preview window…therefore… what is the utility of the waveform histogram for that… ?
i doubt you need to steal these two lines of code. probably faster to type your own version than to copy/paste + fixup… :
Now my task will be to understand what it indicates
The horizontal axis in the waveform histogram corresponds to the horiziontal axis of your image. Means you can see where for example highlights are clipped
Thanks! Now as you say it … I also had a look at the video linked a bit above. So the white bar on top indicates “all channels clipped”.
And big thanks for implementing all kind of useful tools!
Don’t thank me, thank @Lawrence37, who implemented waveform and vectorscope for RT and he’s the one who can give you better answers for this than me.
This is a good explanation: How to Use and Read the Four Primary Video Scopes
I just compiled the latest dev, and the new scopes seem to be working great. These are very useful tools, thanks @Lawrence37!
Oh, but you’re the first one to provide an explanation that made sense to me…
Of course, @Lawrence37! Great work
(and one of @heckflosse’s latest merits were earned with the excellent capture sharpening tool)
Thank you for this words
Cheers Ingo
RT has always been brilliant but these have made it stratospheric - colour just got silly-simple thanks to @Lawrence37
Hi @Andy_Astbury1 thanks for the nice tutorial on the waveform and scopes! You’re a great ambassador for RT to the public
Did you know you can also click-and-drag on the canvas of the scope and waveform itself to change the brightness? Might save you the hassle to click the small slider.
Also, on a more fundamental note, what is the advantage of using the RGB curves when setting the skin tones? My first instinct would be to go for a hue related tool, in L*a*b* probably since it behaves nicely (mostly) linear. And would a properly white balanced shot with a grey card even need this adjustment step?
Where can I find 5.9 dev??
Or whatever it is called…the one with the waveforms…
You can get it (read: clone/pull and build it yourself) from GitHub:
Instructions on how to build from source can be found at the bottom of the above linked page. I’m on Linux (Debian 10) and it compiles/builds without any problems.
I’m not aware of there being an appimage or nightly build for the development version. See next post by @XavAL
PS: At the moment of writing this I’m not able to reach the RawPedia website (temporarily down?)
If I’m not wrong, you can download development version appimages from here: Release Automated Builds · Beep6581/RawTherapee · GitHub
You’re too kind Roel
Now that’s something I didn’t know - useful tip thank you.
Only one - trying to keep it real simple. Anyone with a long history of Lr/Ps will be familiar with RGB curves and will understand this method pretty much straight away.
Depends on how much you trust your lighting and grey card! But it would be a wise move to go through the motions just to check everything - IMO of course…paying clients can be quite picky! And here I’m thinking cosmetic product shots and pantone matching more than your standard portrait sitting.
Cheers Roel