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28 votes

How do I make my image comply with the requirements of this photography competition?

"we may require the originals of the awarded photographs to be submitted by the relevant participants, with a short side of minimum 2200 pixels and bit depth of 300 dpi." and " ...
Michael C's user avatar
  • 175k
14 votes
Accepted

Can a blind person resize a photo independently?

The image I uploaded was rejected because it was under 300 DPI. The DPI is just a number which has no relevance to a digital image. It relates only to printing and not the quality or resolution of ...
StephenG - Help Ukraine's user avatar
7 votes

Is 4288 X 2848 pixels an unfriendly ratio for quality printing and framing or am I missing something?

The idea that you will get better prints at exactly 300dpi — where one dot is also one pixel — is a misconception. There may have been a limited time and certain circumstances where it was true, but ...
mattdm's user avatar
  • 143k
6 votes

Is there a way I can scan an A4 photo at 4800 dpi?

Oh my. Why on earth would you need to scan something at 4800 ppi? That would give you a file of 39840x56160 or a 2,237 Megapixels... a really pro normal digital shoot has rougly 80 to 100 Megapixels (...
Rafael's user avatar
  • 25.1k
5 votes

How to edit an image without changing its dpi?

Purely digital images don't "have" dpi. They are just an array of pixels (dots). DPI1 - dots per inch - specify a way to translate the mathematical abstraction of pixels to a physical size. ...
Zeus's user avatar
  • 1,549
5 votes
Accepted

Why don't printers print square dots/pixels?

You are confusing a lot of things. Let me try to explain a bit. PPI and DPI are not the same units. A Pixel is an information unit. The values of color on one location of an image. And a Dot is... a ...
Rafael's user avatar
  • 25.1k
4 votes

Is there a way to change camera settings (Nikon D40x) to a higher dpi?

You got it the wrong way round; the dpi setting stored in the file is nowadays just a historic and mostly useless number, and you could simply change it with a tool, but there is not even any need for ...
Aganju's user avatar
  • 2,022
4 votes

How to scale up an image for print. How large can i go?

Do the math. If you really need 300 DPI, then at most your picture can be (2500 pixels)/(300 pixels/inch) = 8.3 inches wide. If you want bigger than that you either can't, or you have to relax your ...
Olin Lathrop's user avatar
  • 17.4k
3 votes
Accepted

Scanning film negatives - Resolution, DPI and file size

dpi is about the inches... pixels per inch. 4500x3000 pixels at 3200 dpi is 1.4 x 0.94 inches, on the film. 4500x3000 pixels at 360 dpi is 12.5 x 8.33 inches, on the print paper. The spacing and ...
WayneF's user avatar
  • 12.9k
3 votes

Calculating cost of Inks

Once upon a time I was tasked to provide data to estimated material costs for photofinishing shops using high speed inkjet print engines. Analyzing ink consumption for tens of thousands of prints of ...
Alan Marcus's user avatar
  • 39.4k
3 votes

Calculating cost of Inks

Your first problem. There are many ways to convert an RGB file to CMYK. This depends on the color profile and that gives you different CMYK values for the same RGB one. Some give let's say a 300% TAC ...
Rafael's user avatar
  • 25.1k
3 votes

Does bumping DPI improve the print quality?

Short answer No. More elaborate answer No. The statement about 300 DPI being "best" most likely comes from the fact that this is incidentially their printer's native resolution. If you scan ...
user69960's user avatar
  • 131
3 votes

Does bumping DPI improve the print quality?

You're doing something more than simply changing the dpi setting if the file size is increasing significantly. Just changing the dpi setting in the image's metadata should not affect file size if the ...
Michael C's user avatar
  • 175k
3 votes
Accepted

How to submit a picture with 12mp and 300dpi to a contest?

Dpi is dpi and megapixels are megapixels. Apples and oranges. These are two different values that can be chosen independently. 12mp means that the total number of pixels should be 12 megapixels. ...
null's user avatar
  • 8,524
3 votes

How to submit a picture with 12mp and 300dpi to a contest?

Your camera is 18Mpx. 12 is a smaller one. For an important shoot get used to shoot in RAW so you have flexibility to edit the image, but it is not important for the requirements of this contest. ...
Rafael's user avatar
  • 25.1k
3 votes

Is there a way to change camera settings (Nikon D40x) to a higher dpi?

I can print a 4x6, then scan it and save at the higher resolution. Why would you do that! Where is the magic process that creates new detail there? You are only losing information! You are cheating ...
Rafael's user avatar
  • 25.1k
3 votes

Do cameras assume a particular size of print when reporting DPI?

Nope. The number is purely fictitious. The vast majority of cameras always put the same number. You can even check it out by changing the size of image output and you will see that the DPI stays ...
Itai's user avatar
  • 103k
3 votes

Are 72 dpi and 300 dpi images with the same resolution the same quality?

The reason you, and everybody, have trouble figuring this out is because there is no such thing as the dpi of digital images. Images only have pixel dimensions and image quality. You can only get the ...
moot's user avatar
  • 629
3 votes

Paper recommendation for 1200 dpi print?

Typically, finely printed details are created with photo lithography. The source image is created at a larger scale than the final image to reduce the effects of mechanical tolerances. The larger ...
Bob Macaroni McStevens's user avatar
2 votes
Accepted

Is 4288 X 2848 pixels an unfriendly ratio for quality printing and framing or am I missing something?

The native aspect-ratio of nearly every DSLR is the same. This is actually 3:2 and is available in sizes from 4" x 6" to 24" x 36" quite commonly. There is usually a few extra pixels in one dimension ...
Itai's user avatar
  • 103k
2 votes

Trying to print A1 size paper, but confused over dpi/resolution settings

This is a dialogue that creates a new image and the DPI shown here is only for reference if you want to set the resolution of the document according to how large you want to print it. However, since ...
K. Minkov's user avatar
  • 2,055
2 votes

How to submit a picture with 12mp and 300dpi to a contest?

You said "stay 12mp" so I assume the image is 12 mp now. So in Lightroom, in the Adobe Camera Raw editor view, there is a line of text immediately below the preview picture. That line (by default) ...
WayneF's user avatar
  • 12.9k
2 votes

Does bumping DPI improve the print quality?

I was told that they can can accept only 300 DPI pics as it is the best for printing. This has a different meaning in printing than you seem to expect. If the image is to be printed in the book, for ...
WayneF's user avatar
  • 12.9k
2 votes
Accepted

How to calculate the max size of an image based on the canvas size?

150 cm / 100 cm = (50 * 3) / (50 * 2) = 3 / 2 80 cm / 2 * 3 = 120 cm As you do not have to crop, you could still use the full resolution of the picture. However,...
flolilo's user avatar
  • 6,478
2 votes

Calculating cost of Inks

This sort of thing is commonly done for commercial printing, both for overall cost calculation and for setting up ink feeds on the press. (there are typically multiple ink feeds across the width of ...
JerryTheC's user avatar
  • 3,033
2 votes

How does PPI relate to DPI in photo metadata?

First, the "size" of your image is absolutely NOT measured in kilobytes. That is only the file size, which largely depends on the degree of compression you choose. Due to the JPG Quality factor ...
WayneF's user avatar
  • 12.9k
2 votes

Are 72 dpi and 300 dpi images with the same resolution the same quality?

The size of your image is the 4608 X 3456 pixels, which is also basically the actual resolution created in the pixels. It probably only says 72 dpi if you saved it in Adobe menu "Save For Web", ...
WayneF's user avatar
  • 12.9k
2 votes
Accepted

Reduce image sharpness and DPI

DPI is only meaningful for print or a physical display. If you are still seeing and printing the image at the same size, then nothing changes. Now, if you change the DPI and render the image at that ...
Itai's user avatar
  • 103k
1 vote

Does bumping DPI improve the print quality?

Stop, stop... No... I am about to publish a book A book, what? scientific, commercial, novel, are the illustrations predominant, are they grayscale, color, one color. I do not mean for you to ...
Rafael's user avatar
  • 25.1k

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