On 9/5/2019 11:51:44, Eric Weir wrote:
On Sep 4, 2019, at 10:32 PM, John <[email protected]> wrote:
Generally, "72 dpi" is screen resolution. You don't want to print at "72
dpi" because it will look like crap.
At the 240ppi Godfrey mentioned 4032 x 2268 pixels gives you 16.8 x 9.45
inches.
To get a 20" wide print, 4032 pixels is going to give you around "201 ppi",
suggesting a crop to 2016 pixels high (for a 10 x 20 print).
A good "printer" should be able to give you an adequate 10x20 C-Type print
if the JPEG quality is high enough (2.5MB file size suggests it might be
just barely), although you're going to have to crop it to get that aspect
ratio.
Thanks, John. I’m confused. Not that you’re confusing, just that the limits
of my knowledge are again being tested. So the 72 dpi figure has nothing to
do with the size of print that can be obtained? The latter is a function of
the available pixels and the dimensions of the print?
In your third paragraph I don’t understand “suggesting a crop to 2016 pixels
high (for a 10 x 20 print).” I can increase the ppi for a given dimension of
print, e.g., 10 x 20, by cropping the image? My assumption would be that the
only way to increase the ppi would be to reduce the size of the print.
Your last paragraph: You think I can get a decent 10 x 20 print from the
image I described?
Forget 72 dpi. That ONLY applies to looking at the image ON A COMPUTER SCREEN.
10x20 is an aspect ratio of 1:2 (H x W). The aspect ratio of the pixels in your
image is 1.78:2 (H x W).
If you are going to print it 10 x 20, the image will have to be cropped to the
correct height
I don't know if you can get a good print from it or not because I don't know
what the quality of the JPEG is from looking at it on the screen. I'd send the
file to whoever is going to print it and ask them whether they can produce a
decent 10 x 20 print from the file and how much would they crop from the top &
bottom.
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