p**t
发帖数: 20 | 1 If I want to have a ~150k digital photo (email size) printed in a size of 4*
6, is the resolution going to be good after printing? The photo was taken
using a 7.2 megapixel camera. Thank you! | k*****e
发帖数: 22013 | 2 file size 150k is irrelevant,
because it depends on the method of compression.
The camera is 7.2 megapixel:
7200000 = 3000*2400 pixels
3000/6 = 500 pixels per inch
150 pixels per inch is the minimum you need.
300 pixels per inch is good.
500 pixels per inch is more than enough.
4*
【在 p**t 的大作中提到】
: If I want to have a ~150k digital photo (email size) printed in a size of 4*
: 6, is the resolution going to be good after printing? The photo was taken
: using a 7.2 megapixel camera. Thank you!
| p**t
发帖数: 20 | 3 Thanks much for your explanation!
【在 k*****e 的大作中提到】
: file size 150k is irrelevant,
: because it depends on the method of compression.
: The camera is 7.2 megapixel:
: 7200000 = 3000*2400 pixels
: 3000/6 = 500 pixels per inch
: 150 pixels per inch is the minimum you need.
: 300 pixels per inch is good.
: 500 pixels per inch is more than enough.
:
: 4*
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