Lightroom 2, gradient advice needed

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dhphoto
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p.1 #1 · Lightroom 2, gradient advice needed

I'm really liking LR2 on my pc (apart from the regular lockups)

I need some advice about using the gradient tool to 'adjust' the colour temperature of some of my shots.

The scenario is that I'm using studio flash in a mixed environment where the flourescent light is creating a greenish cast on the background (if I set the WB for the subject lit by flash)

Now, why can't I use the excellent gradient tool to introduce some tone into the b/g to lose the greenish tinge?

Can the gradient be used to selectively change the colour temperature of a local area?

I managed to 'get away' with my latest job by merely brightening the b/g area, but if I could properly correct it it would make a massive difference to my work.

TIA

David

Aug 05, 2008 at 09:55 AM

paulhodson
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p.1 #2 · Lightroom 2, gradient advice needed

Only thing I can think is to use it to reduce saturation - might help? Otherwise no doubt the answer is PS - two conversions and combine perhaps?

Aug 05, 2008 at 10:05 AM

dhphoto
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p.1 #3 · Lightroom 2, gradient advice needed

paulhodson wrote:
Only thing I can think is to use it to reduce saturation - might help? Otherwise no doubt the answer is PS - two conversions and combine perhaps?

Yes I can always do that, works well, just wondered if the new LR might be easier, the new LR2 features are just great for me, I just wish it didn't crash and I could give it more resources like in PS

David

Edited on Aug 05, 2008 at 11:58 AM

Aug 05, 2008 at 11:28 AM

picnic
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p.1 #4 · Lightroom 2, gradient advice needed

I've found I can do quite a lot with the gradient--sometimes adding as many as 3 in an image. You can move them around (in editing), use them for exposure, brightness, contrast, saturation, clarity, sharpness, add a different color--I've been surprised what I could do with them. Also--there is the brush which applies a mask (and this is all non-destructive) and can be adjusted for the same things--and erased. I'm still coming to grips a bit with that--just watched a Julianne Kost tute about those last night--and realized I could use them globally or locally--didn't realize that.
http://www.jkost.com/lightroom.html

Just off the top of my head--did you try the HSL panel? If the cast is strong enough you may be able to correct it with either that or the calibration panel--maybe LOL.

I rarely have lockups--occasionally with multiple gradients (PC with XP pro). I haven't tried it enough with my laptop with Vista since I don't use the laptop for processing (but do have both PSCS3 and LR 2.0 on it--primarily for use trying tutes, etc.)

I have used LR since beta 1.0 and almost always a roundtrip into PS but I've been suprised how much less I want/need to do that with 2.0--esp. as I became more used to using the new tools in the Develop module.

Diane

Edited on Aug 05, 2008 at 12:09 PM

Aug 05, 2008 at 12:04 PM

dhphoto
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p.1 #5 · Lightroom 2, gradient advice needed

I've tried putting various colour tints into the gradient (the opposite of the cast) but it's not working right yet.

I love the ability to be able to graduate a sky and increase the saturation of it, excellent. Like using a polariser retrospectively

I have a pc running XP Pro with 4 gig of RAM and I'm getting out-of-memory errors, but there just doesn't seem to be a way of increasing LR's available memory

David

Edited on Aug 05, 2008 at 12:26 PM

Aug 05, 2008 at 12:25 PM

picnic
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p.1 #6 · Lightroom 2, gradient advice needed

David, try the Adobe Lightroom forum and see if others have a similar issue. I haven'at gotten any out of memory errors on either computer--yet. One is XP Pro and one Vista--both with 2GB RAM--and one with very large catalog (going back to 2000, but all on external drives--of course the catalog is on the main drive).

Diane

Aug 05, 2008 at 12:50 PM

Edgar Poe
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p.1 #7 · Lightroom 2, gradient advice needed

dhphoto wrote:
I have a pc running XP Pro with 4 gig of RAM and I'm getting out-of-memory errors, but there just doesn't seem to be a way of increasing LR's available memory.

I found LR2 and CS3 becoming increasingly unresponsive during brush operations over the course of a week or so.

Two things you might try (if you haven't already):

1) Relocate the Camera Raw Cache to a non-system drive and increase the max limit to as high as you can. SOme are saying 20 to 30 GB.

2) Check to see if indexing is turned on for the image drive. If it is, turn it off.

The Camera Raw Cache can be changed via Preferences/File Handling.
Changing the cache and rebooting resulted in an immediate return to more than acceptable responsiveness here. I've had no more issues for 2 days now.

I set my max limit to 20 GB.

Some have also said that discarding the old previews (if upgraded) and rendering new previews has helped. I haven't done this.

One more thing that has been said to help is to uninstall LR 1.x.

Edgar

Edited on Aug 13, 2008 at 03:26 AM

Aug 13, 2008 at 03:07 AM


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