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I have very little experience with images so please bare with me. I need to create 3 different levels of image resolutions for an experiment (i.e low (kind of fuzzy looking), medium, high (original looking photo), conditions). The experiment will be taking place online, so I need the image size to be 700 X 400 to fit onto the web-program that I am using. Where would you suggest I edit my photos (and what would I be editing really) in order to create 3 resolution variations of the same image?

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    This question is much clearer than your previous one. Normally on this site you just edit the original question instead of posting a new one to avoid clutter. Perhaps you should just delete the original one.
    – Wolff
    Nov 9, 2020 at 18:35

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As a professional I have access to Photoshop, so in this answer I use that, but you could use the same approach in a free alternative like GIMP.

Here we have an image in 700 × 400 px:

Then we first scale the image down to half size, 350 × 200 px using Automatic interpolation:

With this result:

And then we scale it up to the original size using Nearest Neighbor interpolation:

The result is this image which has the same size, but 1/4 of the information:

If we instead scale it down to 25% size and then scale it up to 400% we get this:

Is this what you were looking for?

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  • Yes! This is exactly what I'm looking for :) Thank you!
    – annatn998
    Nov 9, 2020 at 18:52
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    @annatn998 Of note.. this does not take into account KB.. which was the primary hang up in the previous question. :)
    – Scott
    Nov 9, 2020 at 19:02

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