DPI myth.


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shunzi

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Nov 14, 2008
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#1
Came across a few photography competition that required user to send in photos at 300dpi or more.

Does dpi really matter that much?? Canon had the number at 72 whereas Nikon had 300 but the resolution are the same?! (printing wise of cause..) and one can easily change the number in PS into 300dpi too...

When one send the photos to the printer, will he/she reject the photos just because of the dpi?
 

yamcake

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Aug 11, 2003
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#4
1. Capture resolution is always same. i.e 8mp or 12mp etc
2. DPI can always change. Ie. High DPI means slower phyiscal print size. vice versa.
3. Sometimes 300DPI required to have decent print quality for commercial publishing, but they forget about the physical print size.. but to some, they just act as if they know by putting the requirement..

correct me if i'm wrong
 

shunzi

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#5
Thanks guys for the input.
 

Dream Merchant

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Jan 11, 2007
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#6
Came across a few photography competition that required user to send in photos at 300dpi or more.

Does dpi really matter that much??
They just scare low res so all your files unusable for all their advertising, marketing and PR/communications needs in the future without paying you and having to go back to you and ask you for hi-res files mah. :bsmilie:
 

catchlights

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#7
They just scare low res so all your files unusable for all their advertising, marketing and PR/communications needs in the future without paying you and having to go back to you and ask you for hi-res files mah. :bsmilie:
simple, just send an image is 600pixel x 400pixel, and tell them you save it at 600ppi, far far better than 300ppi they want.
 

Dream Merchant

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#8
simple, just send an image is 600pixel x 400pixel, and tell them you save it at 600ppi, far far better than 300ppi they want.
In typically tunnel-vision bureaucratic fashion, they will just tell you cannot and disqualify you.
 

catchlights

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#10
never mind,

usually for such photography competitions, just need to mention submit a digital file not lesser by how many pixel by how many pixel, eg, please submit your digital image in jpg format not lesser than 2400 pixel by 3000 pixel

telling people submit photos in 300 DPI without telling image dimension is totally meaningless, how would participants know how big the images should be?
 

lsisaxon

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Nov 29, 2004
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#11
never mind,

usually for such photography competitions, just need to mention submit a digital file not lesser by how many pixel by how many pixel, eg, please submit your digital image in jpg format not lesser than 2400 pixel by 3000 pixel

telling people submit photos in 300 DPI without telling image dimension is totally meaningless, how would participants know how big the images should be?
DPI is meaningless without mention print size.
please Google the relationship between DPI and print size.
1 pixel by 1 pixel at 300dpi. Nice! :thumbsup: You can still blow it up any size and aspect ratio you want without affecting its quality.. ;p
 

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shunzi

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Nov 14, 2008
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#12
never mind,

usually for such photography competitions, just need to mention submit a digital file not lesser by how many pixel by how many pixel, eg, please submit your digital image in jpg format not lesser than 2400 pixel by 3000 pixel

telling people submit photos in 300 DPI without telling image dimension is totally meaningless, how would participants know how big the images should be?
1 pixel by 1 pixel at 300dpi. Nice! :thumbsup: You can still blow it up any size and aspect ratio you want without affecting its quality.. ;p
tingtingting! Correct.
 

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