72dpi to 300dpi?

Question:If I were to take a picture that's huge at 72dpi, and convert is to 300dpi, what will be wrong with the picture, what about resolution wise too? Will it print out alright?

Best Answer - Chosen by Asker: If I were to take a picture that's huge at 72dpi, and convert is to 300dpi, what will be wrong with the picture, what about resolution wise too? Will it print out alright?

If it's really huge (say something like 20 x 30 inches) and you change the dpi without preserving the physical size, it should be fine; it will be smaller image, but printable.

You will find that images from some digital cameras, when you open them in something like Photoshop, will do exactly that, because the computer will use the dpi for screen display (72 dpi). I do this all the time, increasing dpi and letting the physical image size decrease. (For my camera, they open at 180 dpi, but they are still huge, and I tend to change them to between 250 and 300 dpi for printing purposes.)

When you do this conversion in Photoshop, go to Image>Image Size and uncheck Resample Image. Then enter the dpi you want, and you will see that the physical size of the image will decrease, but your quality should be okay.

should print fine but i dont know about resolution problems. :(

http://answers.yahoo.com/question/index;...

since your picture is already huge at 72 dpi, im assuming that its pretty clear already. so you don't actually need to convert it to 300 dpi unless you plan to blow it up even further, of which the resolution won't really be improved, just a little better.

hope that answers your question. :)

As Amy says if you keep resample image unchecked the image will reduce in size to 25% of the original, in essence you are not changing anything in the image just the image size, if you imported the picture into a Quark or InDesign document and set the proportions to 25% you would get the same.

However, I wonder why you need to convert it to 300dpi, that is only required for lithography, digital printing can get away with a lot less –?a bare minimum would be 72dpi for many processes, so you could print a 72dpi at 100% of its original size but to ensure the best quality of digital print you should aim for 150-200dpi that would be at least 50% of its original size.

Digital printing varies in its requirements so these are only rough guides.