Gimp logo poster size1/16/2024 ![]() Larger is ok, some scanned images might use 600 - 1200 ppi but generally not much benefit using large values. The convention for photographs is use 300 ppi. Viewing the print at a distance (a poster) and a small value is ok, a 6"x4" photo and a larger ppi is needed. You can use any value for this, eye-of-the-beholder comes into play. Right Print Size Printing is where pixel-per-inch (ppi) comes in. I would pre-process each before starting using Image -> Scale Image Both get there in the end, but Scale Image is that little bit more predictable.Ģ. It sounds like you are doing that in place on the canvas using the scale tool. If you want the individual photos all the same size then you need to scale each photo individually to the same dimensions in pixels. Going back to the subject: "Get Photos Right Print Size - And All The Same!" GIMP is that clever ? It actually changes the pixels per inch? What's happening there? It must be throwing pixels away on some edits, creating new pixels on others? that way I don't need to make different printouts for each. both of you are simply talking about scaling. I don't know what to do, if anything, about 'floating layers', don't know about these alpha channels and whatnot. I don't know the difference between a mask and a layer. My current understanding is so miniscule. One needs understanding isn't it? Not just blindly doing things. I will try that and as I say I will try your suggestions and really learn something, hopefully. I think I've got that right have I? Learned something there? So I, for that pic, should tell GIMP I want a new canvas measuring (4 x 558) x (6 x 558) in inches. So that 737 x 1072 actually is meant to be a 33x48mm pic with a dots per mm of 22.3 which at 25mm per inch would be something like 558dpi. GIMP has decided 180 ppi I suppose because that's the default on my setup when I ask for a new canvas.Įach photo actually has a different ppi because though all taken with the same camera at the same resolution my cutting a part out to use for the passport means I am making a different ppi for each one based on the number of pixels I've had to cut out from that photo - requiring each cutout to shoehorn into 48mm x 33mm. Together with letting GIMP decide the pixel size of the printout canvas? Isn't the crux of my problem my insistence upon getting the mix of photos onto one printout? I will have to sit down and read them carefully, do what's suggested and absorb it all, learn what it means. Those fit together like : You can change ruler dimension bottom of the image window if it helps but the image is Gimp it is in pixels and the size will show top of the window. You need to scale them down to 234 x 340 pix. Hence I never even get past the first one.Īll different sizes. Can paste them on but they're too big and I can't move them around to tuck them into the corner. Quote:ight now I can't even cut and paste them successfully onto a new canvas of 4" x 6". The same with the individual passeport photos, except this time set the units to mm underneath is the size in pixels 234 x 340 <<< the size for each 'headshot' Under that is the size in pixels: 1080 x 720 <<< the size for the print shop. ![]() Set the units to inches (in) Set the Width and Height to 6 and 4. Or is there an entirely different way to go about it?įirst 180 ppi is not wonderful for printing photographs, but it might be ok.Ĭonversion from inches to pixels, which is not difficult because generally pixels-per-inch (ppi) are used.īut why not use Gimp to do the arithmetic for you.įor the 6" x 4" print size 180 ppi File -> New and open the Advanced Options Set resolutions to 180. I then know the pixel dimensions of the rectangle I need to cut out because I just multiply those pixels/mm by the height and width (48 x 33). The method is to calculate the pixels per mm by measuring the head height in pixels right there in GIMP and dividing that number by the required head height in mm as specified. Hence I never even get past the first one. ![]() Right now I can't even cut and paste them successfully onto a new canvas of 4" x 6". So I've been making the passport pics from different photos all supposedly crafted to be of the required size (48mm x 33mm in this case ) and I have finished up with the 'passport pics' with these details according to GIMP:ġ. I am trying to make passport photos for three different people.Īnd I think to finish up with an image suited for your typical print shop where they print on 4" x 6" paper and usually get about eight passport pics on the one card.
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