Played with a Magpie.

[Glen Roberts]

Out photographing birds yesterday and decided to have a bit mess about with one my shots in lightroom.
Can't remember exactly what I did but I remember I clicked two of the presets then something else.

BTW in light room when you go through the presets, when you go from one to the next to see what difference it makes to the shot, does it cancel the previous preset or keep the changes then add the new one to it???

 

[Rob MacKillop]

I wondered about that as well...

 

[Jim Kuo]

From my experience, I find the answer is "not always".

I find that if presets A and B affect totally different aspects of a picture, then applying A then B, the final result would be equal to A, undo, B.

But on occasions, I find that if A and B are similar presets, eg. both B/W conversions, or B is a minor effect such as Vignetting, then I often end up different final image for A then B and A, undo, B.

Of course, this is just my personal experience and no way a scientific conclusion. Perhaps others with more experience on this can shed the light.

 

[Hamish Gill]

It depend how the preset is made ...
Some effect everything even if it is just setting somthing back to the default

Eg if preset "a" sets
exposure to +1
And blacks to +5 (I can't remember the scales for blacks)

Preset "b" sets
Exposure to +2

If you press a then b

You will end up with +2 exposure
And +5 blacks

Does that make sense?

If b was
Exposure +2
Blacks +2

A then b would result in
Exposure +2
Blacks +2

The bast way to understand it is to try making a few presets or your self ...
When you create them you will see you can select which sliders settings to save
Those selected ones are the only ones that will effect things in the image you chose to apply it to ...

Clear as mud!

 

[Jim Kuo]

Thanks Hamish.

So basically the final effect on the image is the union of all presets applied. And the settings from the later preset override the previous ones.

 

[Hamish Gill]

Yep ... Sounds about right ...
I'm pretty certain anyway ... Always best to double check when it comes to me explaining somthing like this

 

[Jim Kuo]

What you described matches my experience .