I have some older cell phone images that are 72 dpi. If I convert the image to 240 or 300 dpi, how is the quality/sharpness affected? I can't really tell (which may be the answer!)
Thanks
Sandy
Posted by Nancy de Flon on April 2, 2018 at 12:07 PM
Hi Sandy, my cellphone is an iPhone 5 and it takes photos in 72 dpi. If I want to do anything with the photos other than email them directly to friends or post on FB, I have to ask the phone to send them at the original size. Even still, converting the image to a higher resolution doesn't make them more usable; it's not going to improve the sharpness. Maybe other types of smartphones are better in this regard, I don't know, but this is the case with mine. Hope this helps.
I think most cell phones will give you a file size of about 1-2 MB which can be re-cropped with some success to 240-300 dpi from 72 dpi. As long as the original was sharp, it should come out pretty well. I did that with these two shots which were posted on NPN a while back with fair results. Not going to give you the IQ that you get from your new 850, but they come out pretty usable anyway.
Discussion
5 repliesThanks
Sandy
As the dpi goes up the size becomes smaller thats it. ):
Avi
I think most cell phones will give you a file size of about 1-2 MB which can be re-cropped with some success to 240-300 dpi from 72 dpi. As long as the original was sharp, it should come out pretty well. I did that with these two shots which were posted on NPN a while back with fair results. Not going to give you the IQ that you get from your new 850, but they come out pretty usable anyway.
http://www.naturephotographers.net/imagecritique/ic.cgi?a=vp&pr=242123&CGISESSID=89fd49243d7ace9169419fd6b4659837&u=10441&title_action=
and
http://www.naturephotographers.net/imagecritique/ic.cgi?a=vp&pr=237158&CGISESSID=89fd49243d7ace9169419fd6b4659837&u=10805&title_action=
Sandy
--P