Why there is no Presets in Levels adjustment?

[shijan]

Any idea why there is no Presets in Levels adjustment? Real life example: i created specially calculated gamma correction for RGB channels and wanted to keep it as preset, but remembered again that Levels can't save Presets.

[Gerhard Huber]

Use Curves instead, does almost the same with more options and has presets.

[shijan]

Well, i use both. Curves and Levels are similar in logic those are tools for different tasks.
Cons:
Curves can't work with negative values 32-bit depth. So it is impossible to recover clipped data in same way as it is possible with Output Levels.
Curves don't have Gamma sliders for each channel.

Pros:
Curves are nice for custom correction, like separate shadows/highlights. Levels can't do custom curve corerction.
Curves are great for gray balance picker. In some other apps Levels can use gray picker to align gamma sliders, but Levels in PhotoLine don't have such option.