Adjust an images resolution

poker_face

If you have a program like photoshop you can input exactly what resolution you want.
do you know what the resolution needs to be, and what it currently is?

[Deleted User]

isofa wrote: »

It's likely to be a too low res image - meaning not enough pixels. And it sounds like you are confusing resolution with size/pixel count.

The "not enough resolution" message, is likely to mean, "the image doesn't have enough pixels to print at the quality/size required."

You can't up the resolution and resize, without making it blurry or jaggy, you cannot add detail that isn't there.

You can change the output resolution of a file say from 72dpi to 300dpi, but you'd have to retain the pixel count, e.g. 640 x 480.
If you resize the image, say from 640 x 480 to 2560 x 1920, i.e. increasing the size of the image, you'll just end up with a much larger image, but looking out of focus and blurry! Doing this in Photoshop or any other image program, will result in a poor quality image, regardless. You can still set the output resolution to 72, 150, 300dpi etc.

A printing service won't care of the output resolution set on a file (if you are talking photo printing), just the number of pixels available, as the output resolution is a trivial thing to set.

Bang on, well said.

timbim_2

This really raises the question over who the original belongs to. They may not be too happy to have their IP printed on someone elses business card.

Conor_3

My missus works in sign design. Whenever anyone says they're emailing a graphic file her boss shakes his head and usually mutters some "for the love of god" comment. Basically, any image file that is small enough to be emailed is going to look toss unless it's going to be printed out quite small.

aliEnRIK

Conor wrote: »

My missus works in sign design. Whenever anyone says they're emailing a graphic file her boss shakes his head and usually mutters some "for the love of god" comment. Basically, any image file that is small enough to be emailed is going to look toss unless it's going to be printed out quite small.

Nearly EVERY email system allows a 10 meg file (Thats a DAMN good file size for a pic), and GMAIL allows 20 meg!

Aiadi

isofa wrote: »

You can't up the resolution and resize, without making it blurry or jaggy, you cannot add detail that isn't there.

PhotoZoomPro makes an excellent job predicting what should be there that isn't when increasing the resolution and the results are astonishing (if used within reason).

free4440273

^^(Love the MSE sig:)

ormus

youre hardly likely to need a massive file size photo for a business card.
if you were going to print photos above say 12x10, then the resolution would be na issue.

and its true, that you can reduce the resolution, but you cannot increase the resolution.
increasing the size of the photo, is not the same thing at all.

Sput2001

Photoshop will resample an image and allow you to increase an its size and resolution, but it won't turn a sow's ear into a silk purse.

If it's just for a (presumably standard sized) business card you might get away with it. It depends on the size of the original image...

Conor_3

aliEnRIK wrote: »

Nearly EVERY email system allows a 10 meg file (Thats a DAMN good file size for a pic), and GMAIL allows 20 meg!

Yep and 20MB is too small. Firstly it needs to be in an uncompressed format so you don't get artifacting when you blow it up as you do with a JPEG and then it needs to be of sufficient resolution as well. For example, a A4 sized image would come in at 33MB

Missus said she sent one proof to a customer for OK'ing for a 3ftx4ft image for a poster and it was 534MB.