To find the resulting product, find the sum of 3 individual product of multiplier and multiplicand. Hot rolled RHSs are made one piece, whereas cold formed RHSs are made of a flat sheet rolled at right angles and welded.

If copying to a larger aspect number (like 1.4 to 1.5), you normally choose to match the long dimension (else the long dimension will not be completely filled). But that is just a choice, and the difference is small, and it will be difficult to realize a difference from scanning at 1548 dpi. There is another different mild compromise which is reasonable at times. For example, at the calculators initial defaults above (scanning 35 mm film to print on 8x10 paper), Button 2 at 300 dpi computes to scan at 2540 dpi. Which is close to 2400, so instead of increasing to 4800 dpi, try Button 3 at 2400 dpi, which computes printing at 283 dpi, which should be very acceptable. You'll never see the difference from 300 dpi, and the local one hour lab probably prints at 250 dpi anyway. If the Result text might not be meaningful yet, then start at this: Cropping, Resampling, Scaling. It's the basics of something we all need to know about printing images. The idea is not to simply compute some numbers, but to try to explain how you can already know this yourself. It's actually pretty simple.

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But technically, if reducing to a smaller aspect number (like 1.5 to 1.4 in this example), you normally would choose to match the short dimension (else the short dimension will not be filled). All images have been cropped to standard aspect ratios, OR you have calculated the dimensions for each image size and mount size with cut-out/window. When a printer prints at 300 dpi, it spaces the pixels onto paper at 300 pixels per inch of paper. Printing 3000 pixels at 300 dpi prints a 10 inch image on paper. How does aspect ratios relate to cropping? The image below is a full frame 3:2 image. If we printed this as a 6×4” print, it would not need cropping but what if we wanted this image in another common print format – a 10×8”? FWIW,I'moldschool, and I learned the term for printing resolution as "dpi", so that's second nature to me, dpi has simply always been the name of it. Some do call it ppi now, same thing, pixels per inch, which is what it is. Ink jet printers do have their own other thing about ink drops per inch (but which is about the quality of dithering colors (to color each pixel), not about image resolution). But here, we're speaking about printing resolution of image pixels, which ink jets also have to do.

So either way, you still must prepare the mage for printing. An example of a universal numerical method of scaling (and very easy):

Fun

Having spent countless hours capturing images, editing images and probably re-editing and selecting images your now at the stage of getting a set of prints ready.

The maths involved to come up with that size print is to first divide the number of pixels in the width of the file by the 200 DPI. (2,000/200=10). Preparingtheimageshape to fit the paper shape is necessary, because paper and image are often different shapes. If printing yourself at home, the Print menu in your photo editor normally does use the file's scaled image dpi number (pixels per inch) to size the images on paper (regardless if it matches the paper size at all). But it typically will also allow changing that dpi, called scaling (to fit the paper size). For example, if an image dimension is 3000 pixels, then specifying that file number as 300 dpi printing resolution will print it to be 3000/300 = 10 inches print size (even if the paper is only 4x6). But the dpi number that your digital camera initially stores in the image file, unless you have reset it to your planned value, is otherwise far from meaningful, it is just some arbitrary number, which will print SOME size, but not likely to be your own printing goal. Hopefully, you have already properly scaled the image for your selected paper size.The straight-forward way to scale for printing is to simply compute "pixels per inch" for the inches scanned, and then recompute those pixels over the inches printed (called scaling, as mentioned in the scanning Results). The scanner will have its Input and Output dimensions to show this. Also we have photo editor tools to make this resize be easy. See Image Resize. In Blue text at bottom: The best plan is to FIRST crop the image to the shape to match paper shape (same aspect ratio). In good crop tools, there will be an option to specify your desired aspect ratio, and then any crop box you can mark will be the proper shape. Simply choose the best crop size and position of that crop box for best image presentation and appearance, to show what you want the image to show (think about it a second, and choose the crop to omit the distracting or empty uninteresting areas, and keep the best view). That box will be the correct paper aspect ratio. Then resample to the 300 dpi size, which is the proper way to do it, and the two pixel dimensions will come out correct. Or 250 dpi will normally print great too (many one hour photo shops do not print higher than 250 dpi). Some crop tools will offer a dpi resolution field to also resample in the same crop operation (do verify your result pixel dimension numbers). The calculator shows the final result crop dimensions that will fit the paper, AFTER it is cropped to shape, and then again AFTER it is resampled to 300 dpi. This proper match is the obvious best choice (No surprises if you choose the cropping you prefer). The negative is comparable to the composer's score and the print to its performance. Each performance differs in subtle ways.” Ansel Adams This might sound like a simple mathematical formula, but it is precisely how to measure the square footage of a rectangular room in real life. We just need to measure two consecutive sides in feet and multiply the values together. You will see soon how to convert from square meters to square feet, from square inches to square feet, etc... But for now, let's talk about some situations in which you might want to calculate the square footage of something using a simple square footage formula. These situations include selling, leasing, renting, or buying a house or a room; building a shed or a garage for your car; or maybe even when painting a room. In all these situations, our square footage calculator will help you. Although, for the last three, we recommend looking at our paint calculator.