Print sizing and Uploading files at 72 dpi Vs. 300 DPI.

zacker

Ok, not that i sell much but... I use Smug mug for my host and can sell directly from / through them.. i have a question: At what size do i upload images at... the jpegs from my 30D are @ 72 DPI.. is this adequate? or should i up the rez to 300 DPI which i usually do? also, with the print sizes differing so much from the actual out of camera file size, what is the best crop to use or dont use any at all? i have been doing 8x10 or 14x11 or even 16x20 @ 300 DPI but just dont know if i need to ..so i guess what im really asking is, should NOT crop the files if I dont think they need it? and should i keep the rez at 72 DPI...even for printing?
thanks!

Andy

Deja vu?
http://www.dgrin.com/showthread.php?t=27040


And yes, do NOT crop the files. Let the buyers crop. If they make a mistake (rare), YOU can fix it by having your galleries set to PROOF DELAY.

http://smugmug.jot.com/WikiHome/ProofDelayForHappyCustomers
http://smugmug.jot.com/WikiHome/ProofDelaySolveCroppingWoes

zacker

Andy wrote:

Deja vu?
http://www.dgrin.com/showthread.php?t=27040


And yes, do NOT crop the files. Let the buyers crop. If they make a mistake (rare), YOU can fix it by having your galleries set to PROOF DELAY.

http://smugmug.jot.com/WikiHome/ProofDelayForHappyCustomers
http://smugmug.jot.com/WikiHome/ProofDelaySolveCroppingWoes

lol,lol,lol.. Andy, that is sooo funny... after sending this i did a search for it and was suprised... i must have had a mental breakdown or something. I remembered asking but didnt know at what site so i sida, oh well.... ill just ask again..lol Should have searched first... not to worry, its now in "My Faves" and a link to it has been emailed to myself.. lol you can kill this if need be... or use it as an example to other dgrinners...lol

wia

zacker wrote:

Ok, not that i sell much but... I use Smug mug for my host and can sell directly from / through them.. i have a question: At what size do i upload images at... the jpegs from my 30D are @ 72 DPI.. is this adequate? or should i up the rez to 300 DPI which i usually do? also, with the print sizes differing so much from the actual out of camera file size, what is the best crop to use or dont use any at all? i have been doing 8x10 or 14x11 or even 16x20 @ 300 DPI but just dont know if i need to ..so i guess what im really asking is, should NOT crop the files if I dont think they need it? and should i keep the rez at 72 DPI...even for printing?
thanks!

Maybe I also can help you with my article Misunderstandings about dpi:
http://www.dpiphoto.eu/dpi.htm

zacker

wow Wia, my head is realing... nice write up but it still confuses me and now i feel even more like a dummy about this. DPI for instance, in PS... I used to change my pics from 72 to 300.... why does it take soooo much longer to up load, say a 16x20, 300DPI image here to smuggy than it does the same size but at 72DPI? also, if i plan on printing from home, can i take a 72dpi photo at 8x10 or 6x4 and change the dpi to 300 from 72 and print it out or should i keep it at 72? will the print quality be the same? the ONLY reason I was changing to 300DPI was, I got my wife an Epson Photo printer that was making terrible prints untill i read an article that said Epson usually like about 360DPI.. once changed, the prints looked great. so I figured it would also be the same for my HP. If it doesnt matter if i change DPI or not, id rather not.

wia

zacker wrote:

wow Wia, my head is realing... nice write up but it still confuses me and now i feel even more like a dummy about this. DPI for instance, in PS... I used to change my pics from 72 to 300.... why does it take soooo much longer to up load, say a 16x20, 300DPI image here to smuggy than it does the same size but at 72DPI? also, if i plan on printing from home, can i take a 72dpi photo at 8x10 or 6x4 and change the dpi to 300 from 72 and print it out or should i keep it at 72? will the print quality be the same? the ONLY reason I was changing to 300DPI was, I got my wife an Epson Photo printer that was making terrible prints untill i read an article that said Epson usually like about 360DPI.. once changed, the prints looked great. so I figured it would also be the same for my HP. If it doesnt matter if i change DPI or not, id rather not.

I answer with quotations from my article.
question 1: But beware: you have to uncheck the resample-box!
question 2, you are right: Dpi (actually ppi) is only important in case of printing.
And today I have added a link in my Dutch article, maybe it will help you:
http://www.kenrockwell.com/index.htm