Does Pixel Aspect Ratio apply when you design for printing

[TheThinkProject2018]

It may have been there forever, but I just noticed the Pixel Aspect Ratio options.

I looked it up, and it seems to apply to image ratios for optimum screen size.

It is automatically set to square. I rarely design anything that's square (and most screens aren't square.)

Can someone please explain:

Q1. Does this matter at all if you are designing to print?

Q2. If you want to put the image online - do you have to remake the image to fit a mobile screen, and if so - what is the optimal aspect ratio for the most screens.

(None of the options available mean anything to me. I found this attached reference guide, but there are no options like that to choose from)

Thank you

Sorry, I did not expect the image re aspect ratios of screens to go inline and it is duplicated.

[lambiloon]

Hi check the following video you will understand what it means....regards

https://youtu.be/1MCS1pCfNeo

[Stephen_A_Marsh]

Pixel aspect ratio is for video, not print, it is for screen pixels:

https://helpx.adobe.com/photoshop/using/creating-images-video.html#adjust_pixel_aspect_ratio is for video

[davescm · Accepted solution]

Pixel aspect ratio does not refer to the shape of your image but to the shape of the individual pixels. In most images the pixels are square so an image that measures 100 pixels x 100 pixels will be square. There are however some video formats where non square pixels are used. Those menu choices allow Photoshop to display those formats correctly.

In short for normal image use, just leave it set to square.

Dave

[TheThinkProject2018]

Thank you for that.

I had wanted to know what I should do.

As I don't do video, it is helpful to know I should keep it on square pixels.

[PECourtejoie]

Hello, the pixel aspect ratio refer to the pixel, while the list you give are the image aspect ratio. (1 pixel != the entire image)