0

I am trying to determine at what DPI a certain camera can shoot, namely this model, however the technical specs at the official site do not give any details about it.

Is there a way to calculate the maximum possible DPI a given camera can shoot provided we have the sensor type and its number of pixels (just as the in the link above) ?

marked as duplicate by xiota, Philip Kendall, Tetsujin, Michael C, Blrfl Sep 16 at 12:03

This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question.

  • 3
    Possible duplicate of Does the dpi number reported by camera in JPG have any meaning? - now I know it's not quite the same question, but the answer is the same - "DPI" is meaningless for a digital image. – Philip Kendall Sep 16 at 8:53
  • 1
    @PhilipKendall I think this question is not about the DPI in the image metadata, but about the pixels per unit of distance that you can achieve when you do macro photography, which is a combination of reproduction ratio and sensor definition. Just change "DPI" in the question to "pixels/mm". – xenoid Sep 16 at 14:04
  • 1
    @xenoid If that's the case, the poster can edit to clarify, it's certainly not obvious to me that's what they're after. – Philip Kendall Sep 16 at 20:00
1

This will get rapidly closed against the duplicate, but just to set this out in as simple a way as possible…

DPI has no meaning whatsoever until you need to print an image.
At that point, the image's printed size will depend on the DPI set at the moment it is sent to the printer. This is a variable.

All an image has before that is a size, dimensions in pixels.
Nothing else.

  • The EXIF "dpi" tag also has meaning if an image is imported into page setting software or even some text/document editors. – Michael C Sep 16 at 9:28
  • @Tetsujin, thanks for your comments, but about your note "all the image has before that is a size, dimension in pixels" , isn't the physical resolution at which the camera can capture an image a parameter of the camera ( the optical dpi ) ? – Hayk Sep 16 at 9:50
  • 1
    @Hayk You are linking to an article about optical resolution, not optical dpi. That is only a term you just invented. The article uses dpi in connection with scanners, where it makes sense, but not when it comes to cameras. – jarnbjo Sep 16 at 9:55
  • 3
    The 'DPI' of the sensor isn't related to the DPI of the image. The camera captures a number of pixels. If it does that on a full frame or crop frame will affect the "DPI" of the camera, but if they're both 24 MP, the resulting image will be the same 'size'. EXIF tagging being read by DTP software is merely a precursor to its being printed. Change the DPI number in the EXIF, the DTP will think it should be printed at a different size. The image, however, does not change at all. – Tetsujin Sep 16 at 9:56
  • 2
    @MichaelC In which case it is merely a printing instruction. The property still has no meaning related to, nor does it describe any inherent feature or trait of the image itself. – jarnbjo Sep 16 at 10:34

Not the answer you're looking for? Browse other questions tagged or ask your own question.