On Line PP Help

[Glenn NK]

I've been getting Tim Grey's daily eNewletter for a couple of years, and find most of the daily blogs very useful.

He provides answers to questions from his subscribers on both LR and CS.

Today's tip might be useful for many LR users:

https://app.box.com/s/tvfjx78u78dh6mb2ixze

Glenn

[DanK]

A good thing to post. I have been getting them for years as well. In fact, I created a timgrey folder under one of my e-mail accounts where I file the ones I might want to find later. I have 294 of them saved so far!

His quarterly magazine, which is now called Pixology, is not free, but I find it worth subscribing to. Some issues have articles right on target for my purposes.

[Glenn NK]

Dan:

I Select/Copy then paste them into my word processor - that way I can make them fit one page by adjusting the margins and/or text size.

They're then saved into a file called Tim Grey.

For anyone doing any PP with either the Adobe PP toos, I'd highly recommending subscribing to the daily posts - they are free - just subscribe online.

Glenn

[davidedric]

I did subscribe, but they seem to have disappeared - must re-apply

As regards the link. I had kind of worked out that must be happening, but I somehow feel that if one is making adjustments in the basic panel it would be better if they were reflected in the tone curve. An obvious example is the contrast slider.

Would this be sensible or feasible?

Dave

[Glenn NK]

I did subscribe, but they seem to have disappeared - must re-apply

As regards the link. I had kind of worked out that must be happening, but I somehow feel that if one is making adjustments in the basic panel it would be better if they were reflected in the tone curve. An obvious example is the contrast slider.

Would this be sensible or feasible?

Dave

Agreed. I changed the Tone Curve from Linear to Strong Contrast - the sliders in the Basic Panel did not change - not even the Contrast slider.

Seems sensible to me too - don't know about feasible.

Glenn

[davidedric]

Hi Glenn,

Having slept on it I realise it wouldn't work. Even if anything you could do with the contrast slider could be reflected in the tone curve (which I don't think it can) the reverse can't be true - i.e. it must be posible to do things in the tone curve that can't be done with a slider. Oh well.

[DanK]

Having slept on it I realise it wouldn't work. Even if anything you could do with the contrast slider could be reflected in the tone curve (which I don't think it can) the reverse can't be true - i.e. it must be possible to do things in the tone curve that can't be done with a slider. Oh well.

LR behaves the same as photoshop in this regard. The effect of one tonal adjustment is reflected, not in the position of the controls for other adjustments, but in the histogram displayed for it.

For example, open an image in photoshop and add both a levels adjustment and a curves above that. Then push the midpoint in the levels layer. The initial curve in the curves layer is not changed. What DOES change is the histogram shown in the adjustment layer. It changes to show the adjustments made in the levels layer.

Now open the same image in LR. Push the highlights or shadows slider. The curve will stay at its initial position, but the histogram shown in the curves adjustment box will change (possibly with a slight delay).

So, I think the logic of all of the controls is the same: they reference changes to the luminance distribution already created by other adjustments.