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What does this warning mean?


Bosch232

Well-Known Member
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When making a selection, occasionally I'll get this. I believe I've only seen it with the lasso tool, but that may be just coincidence. Is it saying my selection is too small or something?


2013-02-24_0959_zps0c78fc53.png
 
It means you messed up with selection and probably inverted or no pixels are active on layer you're working?
 
Usually, the opacity of selections contains values ranging all the way from zero to 100%. You must have inadvertently made a soft selection in which the opacity only had values between zero and 50%. This can happen if, for example, you have feathered your selection (tool) by 30 pixels, but you are trying to select an area that is less than 30 pixels wide.

HTH,

Tom M
 
This message just says that you won't see it's "marching ants", thats all.

"Marching ants" appear from 50% and upper. If you have subtle selection they just wouldn't show up. But selection is still there and active.
 
Ego, Mike, Bosch -

I'm not at my Photoshop computer to check this, but I'm quite sure that you can make a standard geometric selection (ie, using any of the marquee or lasso tools) with any layer selected or unselected and you won't get that error unless you have set the feathering to be of the same size as the selection or larger.

If you are using a method of selection that depends on the content of the pixel (ie, pixel brightness, color range, etc.), then you can get that error if there are no pixels close to meeting the criterion that you set (eg, selection opacity proportional to pixel brightness). However, if I remember correctly, even in this case, it still doesn't matter what layer you happen to have selected or which layers you happened to have turned on at the time of selection, as long as you (and the selection tool) can see a relevant image at the top of the layer stack.

T
 

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