Photoshop: Errors with the threshold function

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  • Updated 4 months ago
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Photoshop: In attempting a line drawing effect,  I have difficulty with the threshold function. The screen image initially looks fine. But using save or create composite layer(Control, alt, shift E) converts the image a dull gray continuous tone,like a photo copy of a photo. I get the same results in Photoshop safe mode. Is this a bug, or am I making an error?
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Susan G

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Posted 4 months ago

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Jeffrey Tranberry, Sr. Product Manager, Digital Imaging

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Hi Susan,

Do you have a sample file with the set up where we can perform the composite layer command and see what you're describing? You can upload to CC files or dropbox and post the url here so we can troubleshoot.
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Susan G

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I hope I did this correctly. This is a sample with the "stamped" composite layer, however, saving the file gets the same result. (The psd file in progress is over 300M, and I didn't upload it.  I did the line drawing sequence of invert, linear dodge, and gaussian blur an upper layer before applying threshold.  I see a the desired result on the screen, until the composite layer or save alters it. Thanks.
https://www.dropbox.com/s/ilb57w34acei7e6/Sample%20threshold%20after%20composite.jpg?dl=0

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Jeffrey Tranberry, Sr. Product Manager, Digital Imaging

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OK. Unfortunately, the JPEG is only moderately helpful.

Because there is so much texture in the image, I suspect what you're seeing is the image pyramid being regenerated for different zoom factors. Try this. Before you flatten or make a composite layer, make sure your zoom on the image is set to 100% then try the same command to create a composite layer. The appearance should remain the same as long as the view is set to 100%.
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Susan G

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I can't do much work at 100%, but playing around with it, that seems to work. Thanks.