canon digital camera 4000 image
Ashok C
I have a 1600x1200 digital image that I would like to turn into a print of reasonable size, preferably 16in x 12in but smaller if quality necessitates it. Could I get a reasonably good result by scaling the image up to, say, 4800x3600 resolution and then running the image at 300ppi? Or do I have to go with a smaller print size to get a decent result?
Answer
More of the DSLR vs. point n shoot large sensor vs. small sensor crap. Resolution is resolution as far as a printer is concerned. It doesnât matter to them what camera you used or what your sensor size is. You just need to understand what resolution is.
Yours is an example of how those who say resolution doesnât matter are completely wrong. Your 1600 x 1200 image can be printed at any resolution you want. itâs a 2mp image. âPhoto Qualityâ images are printed around 300ppi.
1600 / 300 = 5.3in
1200 / 300 = 4in
No photo processor offers this size paper standard so your image will be printed slightly less than 300ppi then cropped to fit 4 x 6 paper and it will look fine.
Larger images like posters arent typically printed at 300ppi. The print resolution goes down as the print size goes up because large prints are usually viewed from a distance.
Lets examine small vs. large sensor
Canon A1100IS small sensor image 4000 x 3000
At 300ppi = 13.3 x 10
Canon Rebel Xsi large sensor image 4272 x 2848
At 300ppi = 14.3 x 9.5
Image sizes are slightly different due to sensor aspect ratios but theyre very close. Both would print 16 x 10. What never changes is math. 300ppi is 300ppi.
1 inch / 300ppi = 0.003 for both sensors. Both cameras will print pixels .003 inches in size. Period. The sensor size doesnât determine pixel size. Math does.
Heres a link to a quick reference chart showing resolution and print sizes.
http://www.bhphotovideo.com/FrameWork/charts/resolutionChartPopup.html
It says you will bet very good prints up to 8 x 10. To see the print resolution divide your image size in pixels by the print size
1600 / 10 = 160
1200 / 8 = 150
So your 8 x 10 would be at around 150ppi. How good that really is depends on the viewer. Different people have different expectations.
More of the DSLR vs. point n shoot large sensor vs. small sensor crap. Resolution is resolution as far as a printer is concerned. It doesnât matter to them what camera you used or what your sensor size is. You just need to understand what resolution is.
Yours is an example of how those who say resolution doesnât matter are completely wrong. Your 1600 x 1200 image can be printed at any resolution you want. itâs a 2mp image. âPhoto Qualityâ images are printed around 300ppi.
1600 / 300 = 5.3in
1200 / 300 = 4in
No photo processor offers this size paper standard so your image will be printed slightly less than 300ppi then cropped to fit 4 x 6 paper and it will look fine.
Larger images like posters arent typically printed at 300ppi. The print resolution goes down as the print size goes up because large prints are usually viewed from a distance.
Lets examine small vs. large sensor
Canon A1100IS small sensor image 4000 x 3000
At 300ppi = 13.3 x 10
Canon Rebel Xsi large sensor image 4272 x 2848
At 300ppi = 14.3 x 9.5
Image sizes are slightly different due to sensor aspect ratios but theyre very close. Both would print 16 x 10. What never changes is math. 300ppi is 300ppi.
1 inch / 300ppi = 0.003 for both sensors. Both cameras will print pixels .003 inches in size. Period. The sensor size doesnât determine pixel size. Math does.
Heres a link to a quick reference chart showing resolution and print sizes.
http://www.bhphotovideo.com/FrameWork/charts/resolutionChartPopup.html
It says you will bet very good prints up to 8 x 10. To see the print resolution divide your image size in pixels by the print size
1600 / 10 = 160
1200 / 8 = 150
So your 8 x 10 would be at around 150ppi. How good that really is depends on the viewer. Different people have different expectations.
How do I fix my camera? it won't change aperature or fstop!?
tashaluvsh
My camera, which I've never had a problem with, today I went to change my settings on manual mode and it froze on 1/4000th of a second and F32. It won't change them back to anything else. it just froze. please help!
canon digital eos rebel xti
Answer
Try resetting your camera back to the original factory settings.
Try resetting your camera back to the original factory settings.
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Title Post: How to get the best print quality from a digital image?
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