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DPI

Author Message
Jetcityimage
17 posts
<10
Message posted at 07/29/2013, 12:03:35 PM by Jetcityimage
I use 300dpi as the normal upload, but I have seen images offering larger sizes with fewer MP.

Does anyone send in photos with higher than 300dpi?

Thanks,

J


Uploaded files:256 | Total Sales: 101
Red
1,883 posts
Message posted at 07/29/2013, 13:05:29 PM by Red
DPI is a printing term. All you need to worry about is now many pixels your images contain. If they have enough megapixels the buyer can change the dpi to suit their needs. Many images are used for the web and changed to 72 dpi, inkjet printers require anywhere from 144 to 250(ish) dpi. Print usage (web printing on a press) requires 300 dpi.
Megapixel calculator


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Jetcityimage
17 posts
<10
Message posted at 07/29/2013, 13:13:46 PM by Jetcityimage
Cool, Thanks!


Uploaded files:256 | Total Sales: 101
Akstp
84 posts
60
Message posted at 07/29/2013, 18:47:35 PM by Akstp
DPI is a printer/scanner term that I have seen go as high as 6000dpi in high quality printers and scanners, for large format printing. Megapixel is the height times width of the image as calculated in the Megapixel calculator that Red has supplied a link for.

A minimum 3mp file saved at maximum quality of 12 would be saving the image at its highest DPI (or printing quality) and yes that could be higher than 300 dpi. Saving the image at a 3 would result in a 72 dpi for web use.

Hope this helps!
Sony DSLR a900 Full Frame camera w/wireless remote commande...

Uploaded files:264 | Total Sales: 55
Grafoo
787 posts
69
Message posted at 07/29/2013, 19:17:54 PM by Grafoo

Originally posted by Jetcityimage:
Quoted Message: I use 300dpi as the normal upload, but I have seen images offering larger sizes with fewer MP.Does anyone send in photos with higher than 300dpi?Thanks,J


The Myth of DPI
Olympus E-500, 17.5-45mm, 40-150mm, ... Adobe Photoshop, Ad...

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Igordabari
3,879 posts
62
Message posted at 07/29/2013, 19:53:28 PM by Igordabari

Originally posted by Akstp:
Quoted Message: Saving the image at a 3 would result in a 72 dpi for web use.Hope this helps!


I guess for Web use DPI means nothing. Any inage (3MP or 100MP) can ve assignet by any DPI value, but ONLY WHEN PRINTING.
I, me, myself + cameras: Canon 450d (for astrophoto...

Uploaded files:1,835 | Total Sales: 2,692
Akstp
84 posts
60
Message posted at 07/29/2013, 22:54:47 PM by Akstp
Actually DPI does mean something for web use. When you save a image for web use at 72DPI (or quality of 3), the image loads very fast and if someone tries to copy (steal) and print from the web 72dpi version then it would be a very low quality print.

Any image I post on my website or in social media is always a 72 dpi and I embed a link to where they can buy the image. All my images used on the web have been reduced to 1/2 MP or less at 72 dpi. Visually they look the same on the web as a large mp image.
Sony DSLR a900 Full Frame camera w/wireless remote commande...

Uploaded files:264 | Total Sales: 55
Igordabari
3,879 posts
62
Message posted at 07/30/2013, 00:01:00 AM by Igordabari

Originally posted by Akstp:
Quoted Message: Actually DPI does mean something for web use. When you save a image for web use at 72DPI (or quality of 3), the image loads very fast


Quality means JPEG compression level, not DPI. Until one prints the digital image, DPI means just nothing.
I, me, myself + cameras: Canon 450d (for astrophoto...

Uploaded files:1,835 | Total Sales: 2,692
Jetcityimage
17 posts
<10
Message posted at 08/01/2013, 07:18:54 AM by Jetcityimage
I received an email from another agency that said they would not accept images with greater than 300dpi.

Go figure....


Uploaded files:256 | Total Sales: 101
Igordabari
3,879 posts
62
Message posted at 08/01/2013, 21:48:41 PM by Igordabari

Originally posted by Jetcityimage:
Quoted Message: I received an email from another agency that said they would not accept images with greater than 300dpi.


That's strange. Requirements here on the DT and on other agencies tell about resolution (MegaPixels) and compression (quality = 12 on PhotoShop scale). I never saw that somebody required some DPI. Since changing DPI one does not change anything in the image itself...
I, me, myself + cameras: Canon 450d (for astrophoto...

Uploaded files:1,835 | Total Sales: 2,692
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