7300 Views 7 Replies Latest reply: Oct 25, 2010 3:14 PM by Old Toad
Wow - thanks for your help.
So the little icon "i" is in my lower left picture and when I click on it I go to geographic location.
I think I have drilled down another way to find that the "Dimensions" for the photo are 844 X 1421.
Is this indeed "pixels? And is this large enough for a OK quality poster? If not - what size should I be looking for to get an ok poster size image?
Yes, those are pixels and no you've no hope of getting a poster out of 844 x 1421, I'm afraid.
Here's how it works.
The rule of thumb is that you need 300 dpi (that's "dots - or pixels - per inch") for a high quality print.
Your photo has 1421 pixels on the long side. Use 300 of those into every inch (1421/300) and you'll get a high quality print of about 4 and 1/2 inches on the long side.
So, if you want a poster size of about 40" x 30"... you'll need 12,000 x 9,000. That's about a 10 megapixel camera.
iPhoto has a dpi limit that it uses for alerting users that the resolution of the photo may not be enough for quality prints. The screenshot below are those limits in iPhoto's preference file:
However, when ordering prints thru Apple that limit seems to have been raised a bit.
The following are the resolution limits and warning that Apple has put on 4 different sized images I prepared for printing to give you an ideal of what to shoot for. Remember, many have used image smaller than what iPhoto warned at and were happy with them. It's all subjective.