Max blow up size for 3792 x 2592

I have an image that was cropped at 3792 x 2592. I'd like to order prints, but I was wondering what size to order without distorting the image in any way. Thanks in advance.

better question would be how big are you looking to go with your prints?

11x14 is a straight forward print with no screwing around beyond size appropriate sharpening.

I'd be comfortable with that resolution up to a 20x30 with some processing. I'd up-rez. the file to 240ppi @ 20x30 and then sharpen appropriately. I've made a few 20x30 prints from 10 MP files (what you have) and there is no lack of resolution.

Are you asking about size ratio? You have a 1:1.46 size ratio, which the closest semi-standard print size I can think of would be 13x19. It should be easy to crop to any of the multiples of 4x6 or 5x7, though.

If you are just talking the max size, period, I would set 100dpi as a bottom limit, so that is somewhere around 38x26

Ok, this is my first print so if someone can link me to a tutorial that explains cropping / resizing for prints that would be great. I'd like to get as big a print as possible without losing quality, so what would you guys recommend from a 10.1 MP shot from a Rebel XS at the resolution I specified?

300 pixels per inch is kind of the default standard for printing, and I've had good results down to 200 ppi. At 200 ppi you'd end up at 19x13. 300 ppi would get you somewhere around 8x12, 9x13. Here's a link to the printing faq's page

Mike787 wrote in post #9257989
Ok, this is my first print so if someone can link me to a tutorial that explains cropping / resizing for prints that would be great. I'd like to get as big a print as possible without losing quality, so what would you guys recommend from a 10.1 MP shot from a Rebel XS at the resolution I specified?

You could get an excellent 12x18 or 13x19 and a good 20x30. 300DPI is ideal, but also less critical for large prints. You won't be looking at a 20" print from 1 foot away like you would a 4x6.

tkbslc wrote in post #9258108
You could get an excellent 12x18 or 13x19 and a good 20x30. 300DPI is ideal, but also less critical for large prints. You won't be looking at a 20" print from 1 foot away like you would a 4x6.

This is exactly what I wanted to add

I have made 12x18 prints at 300 ppi with an xt and they look fine.

cccc wrote in post #9258603
I have made 12x18 prints at 300 ppi with an xt and they look fine.

Hell, I've made XT 20x30's at 200 dpi on a Durst Lambda that would blow your socks off.
With 3792x2540 you can have beautiful 24x36's.

Ok because i've been directed to this link http://www.design215.c​om/toolbox/megapixels.​php which says otherwise for 10mp. Is this wrong?

Mike787 wrote in post #9259293
Ok because i've been directed to this link http://www.design215.c​om/toolbox/megapixels.​php which says otherwise for 10mp. Is this wrong?

That a 300DPI chart.

Mike787 wrote in post #9257989
Ok, this is my first print so if someone can link me to a tutorial that explains cropping / resizing for prints that would be great.

There's no need for a tutorial. Just take a look at the print sizes available at the lab you're going to get your print at. Usually the ratios are 4:5 or 3:2 or 4:3 and others like 5x7 or 11x14. Either you crop to that aspect ratio or you make a nonstandard print with borders. Printing to a standard size is simple and straightforward. If you want a nonstandard ratio, you'll need to change the size of the canvas, which is a little less simple.

As for size: print as large as you want. 300-350PPI is ideal for small prints. For larger prints, it's no longer relevant since viewing distance takes effect.

The Canon 40D shooting large JPG, will give you a print 54"x36". I've printed these sizes numerous times and have never seen any image degradation. The Canon 20D will shoot large JPG around 48"x32".


Pixel count means absolutely nothing to actual physical measurements. You can shove 300 pixels per inch into an image, and the print size doesn't change. An inch is an inch, whether it has one pixel in it or 500 pixels in it, it's still an inch. Giving pixel dimensions tells you nothing about print size unless you know the ppi.

Using 300ppi as an example, you will get an image print size that is 12.64"x8.64". Divide 3792 by 300, and divide 2592 by 300. That's going to give you the pixel per inch measurement you need to know for print size. What you need to know is what the true ppi is of the image, and divide by that ppi to get your measurements.


All the technical talk about ppi and ratio and all that means nothing for actual native out of the camera physical print measurements. Take a picture, put it on the computer, and see what the actual physical dimensions are. For example, here are two screenshots showing what the full image dimensions are. The first one is at 72ppi, the other one is the same exact image at 300ppi. The physical measurements do not change. The only thing that changes is how many pixels are crammed into one inch...

HTTP response: 404 | MIME changed to 'image/gif' | Byte size: ZERO | PHOTOBUCKET ERROR IMAGE

HTTP response: 404 | MIME changed to 'image/gif' | Byte size: ZERO | PHOTOBUCKET ERROR IMAGE

Ppi is easily changed. It is a function of print size and pixel dimensions, not the opposite. As long as it doesn't drop below 180 you're golden and if it does a good uprezzing will put you back in business