PowerShot SX70 HS Photos at 72 dpi

[SHLiung]

I selected the highest quality for photographing, which is, 5184 x 3888 px

Why are all the photos taken in only 72 dpi?

72 dpi is a poor quality.

Is this because my Canon PowerShot SX70 HS is defective?

My old Canon Powershot SX10 HS photos are in 180 dpi

My other old Canon Powershot SX40 HS photos are also in 180 dpi

So how can the greatly improved Canon Powershot SX70 HS photos be in only 72 dpi?

Please let me know whether my Canon Powershot SX70 HS camera's 72 dpi is a defect and if it needs repairing. I purchased it less than a week ago.

[rs-eos]

That is not true.  Your images have the same exact resolution period.   If you are viewing those images on displays with a 1:1 ratio (i.e. 1 pixel of your display is displaying exactly 1 pixel of your image), you will not see any differences in sharpness at all.

What you're describing perhaps is viewing your images on displays with physically smaller pixels.  That has nothing to do with the DPI value in your image's metadata.

[Anonymous]

The DPI setting that you see in the file properties for a JPG file does not mean anything until you print the photo. In your editing software or printing software, you can change the setting to suit your needs. It does not indicate a low-resolution camera. Even my Canon 5D Mark IV, a professional camera, has 72 DPI in its JPG file properties before editing. See below:

So, your camera is fine and will produce high quality images.

[SHLiung]

I take hundreds of photos. It would be a hassle and too time-consuming to change the dpi for printing or when developing photos. If the photographs' original resolution were in 180 dpi or higher, I would not need to waste time changing its dpi.

Upsampling a photo may not improve the quality of the image or make it look sharper.

Here are the dpi properties of photos from a Canon EOS 5D Mark IV and an iPhone 14 Pro Max which I received from someone. I do not know if he changed the original dpi.

[rs-eos]

We tried.  Your insistence of not accepting the facts does not invalidate said facts.

[kvbarkley]

I am not sure what you want us to do. Your camera is fine. If you want to ask Canon to always use 180 dpi for future cameras, use the "+" on the Canon USA page to send feedback.

[Anonymous]

Assuming that you don't edit or crop the photo (straight out of the camera).

In your file above, the print size would be 72" by 54" at 72 DPI if printed full size. If you print it at 4" by 3" the DPI would automatically become 1296 DPI by 1296 DPI by your printing software. If you print it at 8" by 6" the DPI would be 648 by 648 DPI. So, the smaller the print size, the larger the DPI becomes. What the camera is reporting is if you print the image at its full size, which I doubt you would do. 

In summation, you don't have to do any extra steps to change the DPI. Your printing software will calculate the DPI based on what print size that you chose to print at (your paper size in other words).

If you edit your photo file and resize it to your paper size, and then save the edited file, it will show the new, higher DPI in the saved file.

See this article on Dots per Inch:

https://en.wikipedia.org/wiki/Dots_per_inch 

[SHLiung]

Seeking for further clarification: If I want to develop a photograph (from 6 x 4 till 16 x 12 size) or if I wish to use the 5184 x 3888 (72 dpi) image for book publication, do I need to use a software to change the dpi to 300 dpi before printing or can I just leave it as 72 dpi?

[SHLiung]

What you have been explaining is surprising. It takes time to let all that information sink in.

[SHLiung]

Canon products are made in Japan. Would it be better to send the feedback to Canon's HQ?

[Peter]

Here:

$ exiftool -Xresolution=300 -Yresolution=300 *.jpg

Or if you want to be a real pro 🙃

$ exiftool -Xresolution=1337 -Yresolution=1337 *.jpg