Photoshop: How do I crop to a ratio, not just to sizes?

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I think it would be awesome if we could crop not just to sizes (cm, inch...) but also ratios like any other half decent photo editing software, i know Camera Raw can but why doesn't Photoshop ?

Seems silly i have to use other software to crop to a specific ratio, i know i could crop it in Camera Raw first but that's not always an option.

I also find it stupid that i can't open an image as a layer directly into another file, i have to open it separately and then use the duplicate layer option, when i was new to Photoshop this was very frustrating until i figured it out because it's not intuitive at all. But maybe that should be a different topic.
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Joe Gagyi

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Posted 7 years ago

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Chris Cox

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If you set the sizes in the crop tool, and not the resolution -- then you are cropping by ratio. You are only cropping to a specific number of pixels if you also set the resolution value.
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Joe Gagyi

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That's only partly true, yes that does change the ratio, but it also changes document size, for example if i set a "ratio" of 16 by 9 then it will change the document size to 16 inches by 9 inches (or cm if working in metric)( i just tried it, i ended up with a file 300x169 pixels and 16" by 9.01", this shows that it's also not accurate enough, when i'm trying to make a wallpaper that extra line 1-2 pixel high is really annoying, then i end up cropping it anyway in another software, which is just a waste of time)

But i already knew this and this is why i considered that there is a need for ratio only cropping, besides i really don't understand why anyone would wanna crop to a specific document size, cropping is useful for recomposing a shot, if you wanna change image or document sizes there are specific options for that.

I should not have made the title a question because it really wasn't it was supposed to be a suggestion for improving future releases of PS

And there are lots of other things that could be done so that it would be more beginner friendly (=> more people using it => more people buying it) because it really is a great piece of software it just has some features that are really weird and unintuitive, like saving a JPEG without it's colors shifting (see here for details)
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Chris Cox

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The crop tool is accurate to a pixel, but can't crop a fraction of a pixel without resampling.

Photoshop will crop _exactly_ the area you specified, down to the pixel. If you have to trim off extra pixels - then you missed when specifying the crop region.

So your problems are that the crop tool changes the document size information, even though it's just cropping to a specified ratio? And that it isn't obvious from the UI that you're cropping to a ratio because the crop tool options shows a physical size? Yes, we could make that simpler for beginners.

JPEG is a lossy format, the values can change when you save - that's the nature of the format. Beyond that, you may want to read up on color management and the bugs/features of various web browsers when it comes to color.
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Joe Gagyi

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So cropping to a 16 by 9 ratio giving me a document size of 16" by 9.01" is accurate ? On an image of 12 megapixels that 0.01 inches can be 10 pixels or more, you're saying that can't be cropped more accurately ?
There's no way i can specify an exact 16by9 resolution on varying 8-10-12 megapixel images, if i just enter 1920x1080 then that recomposes my shot, and that's not what i'm looking to do.

How can i "miss when specifying the crop region" if i get a ratio of 16 by 9.01 instead of 16 by 9
And it's strange that cropping to a ratio of 16 by 9 in Camera Raw absolutely always gives me accurate results

As i already said i'm my other topic it's not an issue of browsers and their color management, i'm having problems right out of the gate with PS, but i understand now that it's a JPEG color compression issue and that there is nothing i can do about it, in PS anyway
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PECourtejoie, Champion

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This is the new behaviour of CS6's Crop tool.