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Questions about Photoshop, Adobe's graphics and photo editing program. Ask anything related to designing and editing graphics with Photoshop.

0 votes

Easiest way to selectively sample pixels in an image?

This is "nearest neighbor". Just reduce the size to 10% of original with "nearest neighbor" resampling. Note that the example shown is not the equivalent of every 10th pixel, but more like a block of …
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0 votes

Why are the edges on these images so different?

If you are taking photos and then clipping out the background, then you may have better results using a higher pixel count image and then resizing after clipping. The thought process here is: when yo …
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2 votes

Why can't I turn off swash?

If I select Minion Pro Italic, I get no swash option (the button is greyed out) and so I cannot use/toggle swash alternatives. If I select a font (like Garamond Pro Italic), I am able to choose swash …
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1 vote

How to make a contact sheet from a multi page PDF

I have kind of lost track on whether Adobe continues to bundle a PDF printer driver, but if you have a PDF printer driver, you can simply use Acrobat to print multiple pages per sheet. In the print d …
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3 votes

Reduce size of image reduce quality. why?

Since there can be no half-pixels, when you reduce a 5x5 pixel grid by 50%, you must make a decision how to render 2.5 x 2.5 pixels. In your example, the chimney width is not evenly divisible by 2, s …
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0 votes
Accepted

how to remove lines on the photo?

Try enlarging the image by at least 2x, then apply a motion blur perpendicular to the direction of the lines. You can then reduce the image back to the starting size, and apply an unsharp mask.
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3 votes

How to filter a black image to 100% CMYK

Take your original RGB image, convert to greyscale, Select all > copy > go to CMYK document > switch to black channel, paste special "paste in place"
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1 vote

What is application/vnd.adobe.photoshop file format?

This is called a MIME type. "application/vnd.adobe.photoshop" means the file is: an application; vendor is adobe; application name is photoshop. Normally when I see "format" I think it is telling me …
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1 vote

Difference between RAW file size and Photoshop Image size

RAW formats differ quite a bit even within manufacturer. Canon CR2 for example appears to use anywhere from 2 to 4 greyscale "lossless jpeg" (non-linear quantization?) channels to encode the data. It …
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1 vote

Need to replicate a split toning (with a colored image)

Use the "select > color range" tool with the highest fuzziness value. Select a dark tone somewhere around "75% grey." Hide the selection so you can see better, and use "image >adjustments>selective c …
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0 votes

Chroma keying in Photoshop- problems with reflection

Moving forward, if you can light the subject and the backdrop separately, you will get better results. Bring the subject e.g. 6 feet forward. Set up some blinders behind and off to the sides of the s …
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0 votes

Add contrast with threshold in Photoshop, possible?

Use "Select > Color Range..." set Fuzziness to 200, and then use the dropper to select a neutral tone that is close to the range that you want to adjust. Alternatively, use the dropper to select the …
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4 votes

Replace red with black using Photoshop

Go-Junta has a good generalized answer, but for this specific image: open the channels palette delete the red and green channels set the image mode to greyscale set the image mode the RGB again (opt …
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2 votes

Photoshop GIF color dithering problem

Change the palette to "adaptive" and/or increase the number of colors. With a only 3 colors (including white) there is no reason to dither at all if you use adaptive with 256 color indices.
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2 votes
Accepted

how to do databend/datamosh?

The trick here is that you don't use Photoshop. You backup your photo or video, and then open a copy in HEX editor and then "find and replace" byte fragments to get different effects (or break the fi …
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