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Getting resolution in


MikeMc

MikeMc

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When finding images online...I know the need to start with the best...and work from there. I know at most stock sites, you will get 300dpi if listed, other places...photobucket, flicker....etc no idea. I've read to set PS to look for 300 dpi, and upload as best dpi but I'm lost....and not really saying this as ?????


any translators ?:redface::redface:
 
If your just doing web or devices imagery then the 300 is not a mandatory thing. Not sure i understand your question
 
I would like to always get the highest when I download....I know for web use low is fine, but I want to do some prints soon from some manipulations....don't want 4 x 5 's though
 
Oh I see now, if i need high res for print I search for.ai files or .eps and grab something from those. Detail really decides it for me, if an image is low res but little detail work to improve it then Ill try i. it keeps the editing skills tuned
 
PPI is completely irrelevant for images you find on the web. The only thing that really matters is pixel dimensions -- the more the merrier. I do my best to avoid working on anything smaller than 600px in the short dimension.

This is why Google images allows you to refine your searches based on pixel count, but not on PPI.

HTH,

Tom
 
Unfortunately, there is a terrible error in the 1st image in the link that Paul posted.

The caption says, "Same image at 72‑ppi and 300‑ppi; inset zoom 200%". This is complete and utter nonsense. They are not the same image in any reasonable technical sense.

The one labeled as 72 ppi was artificially down-rez'ed to many fewer pixels, and then up-rez'ed back to the starting pixel dimensions so that it would display at the same size on the web page as the RH image. The data in corresponding pixels of the two images has been intentionally made different between the two images.

Do the experiment for yourself: Change the ppi without resampling, and view the before and after comparison in PS, on a web page, or any other reasonable viewing method, and you will see absolutely no difference between different ppi values. In fact, I just posted exactly this experiment a week or two ago on this forum. I'll try to find the link and post it.

Tom
 
Tom Mann said:
Unfortunately, there is a terrible error in the 1st image in the link that Paul posted.

The caption says, "Same image at 72‑ppi and 300‑ppi; inset zoom 200%". This is complete and utter nonsense. They are not the same image in any reasonable technical sense.

The one labeled as 72 ppi was artificially down-rez'ed to many fewer pixels, and then up-rez'ed back to the starting pixel dimensions so that it would display at the same size on the web page as the RH image. The data in corresponding pixels of the two images has been intentionally made different between the two images.

Do the experiment for yourself: Change the ppi without resampling, and view the before and after comparison in PS, on a web page, or any other reasonable viewing method, and you will see absolutely no difference between different ppi values. In fact, I just posted exactly this experiment a week or two ago on this forum. I'll try to find the link and post it.

Tom
Click to expand...


Poor old Adobe:banghead:
 
Yep. I find a lot of files on deviantarts (but you can google and find large images also, usually 72 ppi but big dimensions) that are 72, 240, and 300. The images work well when they are large. In fact, I've had to make some smaller as I worked with them in PS and added layers and made smart objects, etc. Some of them start out at 50 inches or more. So, yeah, don't work with small images unless they're going to be small details in a manipulation for example.
 
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