Should you edit at full resolution, then resize down later?
Asked 6/12/2016
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2 answers
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If I have the same photo available at 2000×2000 and 500×500 pixels, is there an advantage to doing my edits on the larger version and then scaling it down afterward? I'm thinking about common edits like exposure/contrast, background cleanup, perspective fixes, masking, and sharpening. When is it better to edit the original full-size image, and when should edits be done after resizing to the final output size?
Originally by Photography Stack Exchange contributor. Source · Licensed CC BY-SA 4.0
Photography Stack Exchange contributor
10y ago
2 Answers
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You will not get the same result at all. When you start with your 2000x2000 pixel image you have some scene or subject in it. If you crop it down to 500x500 pixels then you will only have 1/16th of the subject in it. However if you have a 500x500 with the same but lower resolution content, you will have an entire subject.
What you can do instead is scale down the 2000x2000 pixel image to preserve its contents after you are done editing. This requires a little more computation power but any recent machine will handle it without problems. What it gives you is more precision. When doing a contour for background removal for example, it is better to do it at the higher resolution. The scaled down image will look better after.
On the other hand, some editing steps are better done in the final size. The most common example is sharpening because scaling does resampling over sharpened pixels, it will introduce artifacts. So the suggestion is to always do sharpening at as final step. Also something to do after scaling down but before sharpening is moire removal.
As you see, the reality is not as clear-cut as your question suggests.
Originally by user1620. Source · Licensed CC BY-SA 4.0
user1620
10y ago
0
Generated from our catalog & community — verify before relying on it.
In general, do most edits on the original full-resolution image, then resize for the final use.
Why edit larger first:
- You keep maximum detail and flexibility.
- Precise work like masking, cutouts, background removal, dust cleanup, perspective/horizon correction, and sampling for white balance is easier and usually looks better.
- You can export multiple versions later for web, print, or future higher-resolution displays without re-editing from scratch.
What usually does not benefit much from a larger file:
- Basic global adjustments like brightness, contrast, and similar tonal changes.
What should usually be done at the final size:
- Sharpening, because the right amount depends on the output size. A 500×500 web image and a large print usually need different sharpening.
Important distinction:
- Resizing down keeps the whole image, just with fewer pixels.
- Cropping removes image area entirely, so it is not the same thing.
So the usual workflow is: edit the original, resize to the intended output, then apply output-specific sharpening if needed.
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