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Problem with Multiply Blend Mode

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  #11  
Old 02-16-2008, 08:51 PM
pixelzombie pixelzombie is offline
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Re: Problem with Multiply Blend Mode

try resetting the photoshop preferences...
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  #12  
Old 02-16-2008, 09:08 PM
raggatt raggatt is offline
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Re: Problem with Multiply Blend Mode

Good idea - I tried, but still there.

http://www.flickr.com/photos/2392602...96933/sizes/o/

I appreciate the feedback, but fear there may not be a fix?

Last edited by raggatt; 02-16-2008 at 09:19 PM.
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  #13  
Old 02-16-2008, 11:04 PM
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cricket1961 cricket1961 is offline
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Re: Problem with Multiply Blend Mode

I have seen this problem before. Mostly with the block sample though.

Does this happen when you are viewing at multiple Magnifications? Does it happen under 50% view and disappear above 50% viewing?

Try giving the image a strong blur and then change the blur mode to multiply with the fade command. Does it happen then?

Chris
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  #14  
Old 02-16-2008, 11:33 PM
raggatt raggatt is offline
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Re: Problem with Multiply Blend Mode

Chris, thanks for the reply.

Yes, it happens both above and below 50% viewing.

Per your post above, I took a new, untouched pic, applied a strong blur, then faded with multiply...No lines.

BUT, the multiply blend mode doesn't always create the lines.
It does it about a half the time. Some tools/actions always do it and others don't...
I've tried, but can't find a common theme though among the ones that do and the ones that don't.

Last edited by raggatt; 02-16-2008 at 11:57 PM.
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  #15  
Old 02-17-2008, 09:04 AM
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byRo byRo is offline
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Re: Problem with Multiply Blend Mode

This is interesting!

Something nobody has asked yet....
When you multilply, your original image is (probably) on the lower layer and something else (with blend mode "Multiply") is on the upper layer.

What is on the upper layer? Is it another copy of the original? A blank layer? Something else?

(Looking at what you did with pixelzombie's image it seems that you have applied some sort of diagonal gradient. - Could be that the problem is with the gradient)

and

Are you using masks?


(for now, my vote is Vista video problem)

Last edited by byRo; 02-17-2008 at 09:19 AM.
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  #16  
Old 02-17-2008, 10:49 AM
raggatt raggatt is offline
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Re: Problem with Multiply Blend Mode

byRO - Thanks for your response.

The problem happens when I use multiply directly on an original background image and on an upper layer. The upper layer can be a copy of the original image or an adjustment layer (i.e. curves layer). It happens when I use the gradient and brush tools, and when I use multiply with a style (i.e. pattern). So, a pretty wide variety of situations.

I did notice that it might have something to do with combining multiply and transparency. In the example using the gradient tool, it happens when I reduce the transparency of the gradient tool below 100%, and/or the transparency box is checked. It also happens in styles when I apply a pattern overlay in multiply mode and reduce the transparency below 100%. It doesn't happen when I apply a color overlay though!

Any ideas about the cause of this are greatly appreciated!

Last edited by raggatt; 02-17-2008 at 12:20 PM.
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  #17  
Old 02-17-2008, 11:09 AM
raggatt raggatt is offline
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Re: Problem with Multiply Blend Mode

Here's an example using pattern overlay in styles.

This image is a pattern overlay in multiply mode at 100% transparency.

http://www.flickr.com/photos/2392602...28179/sizes/o/

Here's the same image with the transparency reduced to 60%. The lines appear as soon as the transparency is reduced below 100%. In this situation, they appear on the entire image at once, versus in random blocks here and there, as happens when using the brush and gradient tools.

http://www.flickr.com/photos/2392602...19966/sizes/o/

Sorry if I'm beating this to death but, as you may understand, I'm really desperate for a solution.
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  #18  
Old 02-17-2008, 12:03 PM
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Markzebra Markzebra is offline
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Re: Problem with Multiply Blend Mode

Yes I am pretty sure its not a Photoshop problem -. Try changing the cache levels Preferences/memory and image cache. 6 is the default but try changing it. You need to restart Photoshop for this to take effect.

Sound like Chris might have your solution if he's seen this before

Last edited by Markzebra; 02-17-2008 at 12:20 PM.
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  #19  
Old 02-17-2008, 12:36 PM
raggatt raggatt is offline
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Re: Problem with Multiply Blend Mode

Thanks for the idea. I tried a number of different cache levels and still no luck....
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  #20  
Old 02-17-2008, 01:01 PM
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CJ Swartz CJ Swartz is offline
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Re: Problem with Multiply Blend Mode

raggatt --
1. Using Pixelzombie's image, which we know is a high quality image, show us what it looks like when you simply use a copy of the original layer set to multiply mode above the original -- you said the problem occurs then also. I think it is helpful to eliminate the possibility of gradients/styles etc. that might be affecting the final look, and just concentrate on the multiply mode itself first.

2. Does anything unusual show up using any of the other darkening modes - Darken, Color Burn? Does anything happen when using screen and lightening modes? You haven't mentioned a problem, but you may not use those modes in your work, and if there is another mode that shows unusual effects (or not), it might help folks figure out a solution.
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