Part 7 of a continuing new blog series
“All About Image Contrast for Photographers”
Today we’ll take the 1st step toward L&C basics
Part 6 reviewed exactly what the L&C display is telling us
This post will examine
The Levels portion of Levels & Curves
The Curves portion will be in a future post
Capture > RAW Conversion > Adjust Tones with Levels
Actually this post has a motive beyond presenting Levels
I’ve wanted to use short (< 1 min.) videos in tutorials
(I hate videos that drag on; short attention span? 😉 )
This post has a short video – as a learning experience for me
It is made up of three < 10 sec. segments
Each captured in Snagit, my screen capture tool of choice
And combined in ProShow Producer
Along with several text separator slides
If you have any comments or suggestion about this video
Positive, negative, whatever – please pass them on
May need a voice-over. Yes?
The What – The Levels Components of Levels & Curves
One of the most fundamental and useful tools
For adjusting image tonal (brightness) values
Available in any image editing software that’s worth using
The Why – Most images benefit from tonal adjustments
As they come from the camera, the are often flat (lack contrast)
The How – We’ll look at Levels, a part of Levels & Curves
Levels adjustments are made using 3 sliders shown in Fig. 1
1. Slide the black point slider to the right to darken
Any pixel with tonal value darker than the slider’s position
Is rendered black
2. Slide the white point slider to the left to lighten
Any pixel with tonal value lighter than the slider’s position
Is rendered white
3. Sliding the mid-tone slider to the right darkens
To the left lightens
The three sliders can be used alone or in any combination
Click to enlarge; L&C is at upper right
The following short video shows these sliders in action –
There’s a lot more to show about using Levels
Application to the entire image, vs.
Application specifically to individual color channels, vs.
Application to Luminosity without affecting color, vs.
Selective application (say, everything except the daisy’s center)
All of these and more in upcoming posts
500 word cut off – see you tomorrow 😉
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