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How big can you blow up an iPhone 4S photo and still have it look sharp? (self.iphone)

submitted ago by SuperPoop

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[–]Brettuss 6 points7 points ago

All the comments here suck, so I will give it a shot. A hi-res photo print is 300dpi. An 8 MP photo is somewhere near 3200 x 2400. Divide that by 300 and you should be able to get a very crisp 10" x 8" print from a 4S photograph.

[–]SuperPoop[S] 0 points1 point ago

This is all I wanted. Thank you.

[–]ohwut 0 points1 point ago

A couple things here. While I agree 8x10 is the maximum acceptable print size for National Geographic or an exhibition. an 8x10 at 3200x2400 is actually ~150dpi. DPI=/=PPI, while it may be 300 PPI, at print that becomes 150 DPI as the printer uses tiny dots, the D in DIP, to reproduce a digital image.

Even at 200 PPI the naked eye will, only if you have great vision, be able to tell any loss of detail, and if you take a 150 PPI image and sharpen it a bit I'd be willing to bet no one would tell.

Feel free to print nearly any medium print sizes, personally I'd stick with that 8x10 just because the 4x5 aspect is more professional and it looks better. But for size, even a 16x20 is fine until you have it in an exhibition where people will be staring it down.

[–]Brettuss 1 point2 points ago

Thank you for clearing that up, while I was typing up my answer I wondered if the D in DPI corresponded 1 to 1 with a pixel, and I wasn't sure about that.

[–]ohwut 0 points1 point ago

Yep it's a very common misconception. But you were completely correct, 8x10 is the best quality you'll get out of 8 megapickles.

[–]jamesvdm 5 points6 points ago

Depends how far you stand from it.

[–]funkypenquin 1 point2 points ago

1 stick of dinomite should suffice.

[–]tsdguy 0 points1 point ago

Depends.

[–]sudouser -1 points0 points ago

15%.

[–]killayoself -2 points-1 points ago

16%

[–]krixo -1 points0 points ago

15.5%

[–]musictheorist 0 points1 point ago

According to this the 8 mp iPhone 4S camera should be good enough for just about anything. This of course assumes that the picture was taken without blur in good lighting.

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