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Post by Inspeqtor on Nov 2, 2020 3:31:28 GMT
For that matter, you could go 64.444 x 64.444 and get 4640 x 4640; however....., with any specified pixel dimensions, once you start cropping in tighter/closer and the actual pixel dimensions of the target start becoming less than the specified pixel dimensions, to achieve that crop at the specified pixel dimensions, the target is going to have to be upsampled. Am I making sense ? On thing you could do to get a rough estimate as to what pixel dimensions your target crop can withstand without needing to be upsampled = on a copy of the image, with the Crop tool activated and No Restrictions option, draw a relatively square crop box that yields the look you want; this crop box need not be perfectly square, so long as it looks to be square; execute the crop and then go to Image > Size > Image Resize and see what the pixel dimensions are; change the ppi to 300ppi and that will show you the dimension in inches a non-resampled 300ppi print of that crop will be. Are you making sense? No, I do not know what upsampling is any more than I know what resampling is.... |
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Post by BuckSkin on Nov 2, 2020 4:06:34 GMT
Are you making sense? No, I do not know what upsampling is any more than I know what resampling is.... Resampling will be either Upsampling or Downsampling --- actually "sampling" is not the best choice of words for this. Lets look at it this way: You have a big square of modeling clay on the workbench; for demonstration purposes, let's say the square is 24 x 24. You take a rolling pin and spread the clay until it measures 36 x 36; you have made it bigger, but you have also made it thinner --- less dense --- you have "Upsampled" the clay. Now, you squish the edges together until the clay measures 12 x 12; you have made it smaller, but you have also made it thicker --- more dense --- you have "Downsampled" the clay. In each case, you have neither taken from, nor added to, the amount of clay (your pixels). In the case of a digital image, when you spread it out (Upsample) and make it larger, you have made the pixel information thinner and of less quality and your image suffers. When you squish the edges closer (Downsample) and make it smaller, you have made the pixel information thicker, with more image quality to work with. Take one of those tiny cell phone images and load it in Elements; it looks no larger on the screen than a postage stamp; now, zoom in until it fills the screen (or more) and notice how the image quality has started to become thinner until, as you zoom in even larger, it starts to become unrecognizable --- this is sort of a virtual demonstration of Upsampling. Does that help ? |
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Post by Inspeqtor on Nov 2, 2020 6:15:44 GMT
YES!!!!! Thank you Buckskin! You did good my friend!!
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Chris
Established Forum Member
Posts: 490
Open to constructive criticism of photos: Yes
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Post by Chris on Nov 3, 2020 18:56:26 GMT
Inspeqtor, it took me a while to get my head around resolution. Its the pixel dimensions that are the most important. It doesn't matter if the image is 300ppi, 72ppi or 1 ppi. As Clive's examples show, the pixel dimensions are what you should be most concerned with. This article may help: creativepro.com/the-truth-about-resolution/Kind regards Chris |
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Post by BuckSkin on Nov 4, 2020 6:21:24 GMT
In this thread : photoshopelementsandmore.com/thread/7335/72ppiThe nice cat lady shed some light on another fact about pixel dimensions that, mathematical genius that I am, should have jumped out at me without having to have it explained. Cats4Jan gets the credit for this; I am just passing it along = to determine the maximum size, in inches, of 300ppi print an image is capable of, divide the image's pixel dimensions by 3. This fact may convince me to change the little "inches x inches" display to "pixels x pixels" ; unless, I just start making it a habit to make all of my images in Elements display as 300ppi instead of whatever size someone or something else has already designated for them. Just to prevent any more confusion, whatever ppi you choose an image to display as in Elements, so long as you DO NOT allow any resampling, does not change that image in any size. shape, form, or fashion; every single pixel will always still be there and the pixel x pixel dimensions will not change --- only the displayed print size AND the size Elements will make the displayed image in the window when you have the Hand tool enabled and choose "Print Size" Don't take anything above as fact until you verify it for yourself as I may still be asea about all this. |
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