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Need help with lighting effect

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Need help with lighting effect RunSebastian 31 Dec 20:17
  Need help with lighting effect rich2005 31 Dec 21:07
   Need help with lighting effect RunSebastian 01 Jan 00:19
    Need help with lighting effect rich2005 01 Jan 08:54
     Need help with lighting effect Steve Kinney 02 Jan 03:11
RunSebastian
2016-12-31 20:17:41 UTC (almost 8 years ago)
postings
13

Need help with lighting effect

Hello,

I'll start off by saying that I'm super-new to this program, so I'm a bit clueless to what the tools are, where they are found, and what all they can do.

Now, the topic of the hour: I've been trying for the past hour to add a lighting effect filter to this icon that I'm making. As you can see in the snapshot, there is a flashlight in it, so my goal here is to use the lighting effects to intensify the light being shown on the girl in the red dress.

This was my intended plan:

Bottom layer - the original pic

Middle layer - a transparent layer with the lighting effect filter that I can move around to match the angle/position of the flashlight

Top layer - everything in front of the flashlight cut away so only the woman with the flashlight and the area behind her remains.

The transparent layer won't let me add lighting effects, though, as you can see in the pic. I can add the flares, but not a lighting effect. I tried video/written tutorials, but none of them addressed what to do about this issue. Since then, I've tried extra layers, masks, etc., but nothing will allow me to accomplish what I want to do. I'm seriously on the verge of screaming. x_x Any help that anyone could offer would be very much appreciated.

Thank you!

rich2005
2016-12-31 21:07:51 UTC (almost 8 years ago)

Need help with lighting effect

..snip...

Now, the topic of the hour: I've been trying for the past hour to add a lighting effect filter to this icon that I'm making. As you can see in the snapshot, there is a flashlight in it, so my goal here is to use the lighting effects to intensify the light being shown on the girl in the red dress.

IMHO not the correct tool, and even then not the way to use it, although every image has its own requirements.

One way to try.

Duplicate the layer

Put the top layer into screen mode, that reinforces the colours.

Now add a black layer mask and paint in white with a fuzzy brush over the beam of light. That isolates that area.

If you need more brightness. Click in the image icon (right side image - left side layer mask) and adjust the layer brightness Colors -> Brightness - Contrast

example attached

rich: www.gimp-forum.net

RunSebastian
2017-01-01 00:19:13 UTC (almost 8 years ago)
postings
13

Need help with lighting effect

..snip...
IMHO not the correct tool, and even then not the way to use it, although every image has its own requirements.

One way to try.

Duplicate the layer

Put the top layer into screen mode, that reinforces the colours.

Now add a black layer mask and paint in white with a fuzzy brush over the beam of light. That isolates that area.

If you need more brightness. Click in the image icon (right side image - left side layer mask) and adjust the layer brightness Colors -> Brightness - Contrast

example attached

rich: www.gimp-forum.net

Thank you! That helps a lot!

I have another question if you can/want to answer it: is there a way to see the image under the black mask layer? I keep having to go to Layer > Mask > Show Layer Mask and selecting/de-selecting it to check my progress.

rich2005
2017-01-01 08:54:36 UTC (almost 8 years ago)

Need help with lighting effect

Thank you! That helps a lot!

I have another question if you can/want to answer it: is there a way to see the image under the black mask layer? I keep having to go to Layer > Mask > Show Layer Mask and selecting/de-selecting it to check my progress.

Not sure about what you need.

If you need to see the bottom layer as original, then turn off the top layer visibility - the 'eye' icon on the left side in the layer dialog.

Steve Kinney
2017-01-02 03:11:59 UTC (almost 8 years ago)

Need help with lighting effect

On 01/01/2017 03:54 AM, rich2005 wrote:

Thank you! That helps a lot!

I have another question if you can/want to answer it: is there a way to see the image under the black mask layer? I keep having to go to Layer > Mask > Show Layer Mask and selecting/de-selecting it to check my progress.

Not sure about what you need.

If you need to see the bottom layer as original, then turn off the top layer visibility - the 'eye' icon on the left side in the layer dialog.

If you hold down the Control key and left click on the layer mask in the Layers dialog, the mask it "toggled off" and the whole layer becomes visible. Repeat to turn the mask back on.

If you hold down the Alt key and left click on the layer mask in the Layers dialog, the mask becomes visible on the canvas "as if" it was a normal layer by itself. Repeat to toggle visibility off.

In some cases it may be useful to leave masked areas partially visible by using gray instead of black on the mask, i.e. when painting details "back into the picture" with white on the mask, then use the Color Curves tool to make the gray into black when finished.

The Quick Mask tool can serve a similar purpose; with the tool turned on, "paint" on the canvas with black or white to create your intended mask. Toggle the Quick Mask tool off and the regions you painted become a selection; add a layer mask to the layer you are working on, drag and drop black onto the canvas to make a "real" mask from the quick mask.

:o)